Hydrohistorian
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· every download of this record carries its certificate idLAFAYETTE PL
Structure dossier · WDID 0600597 · PIPELINE · SOUTH BOULDER CREEK · DWR record · probably LAFAYETTE CITY OF’s (matched on DWR’s contact or an EPA intake name; verify below)
Source DWR administrative record · verify at DWR structure ↗ Source DWR administrative record · verify at DWR diversion records ↗ Source Our computation, scored against a reference · scored against DWR's call analysis, see /methods
Where this page's figures come from
Generated 2026-10-12 21:21 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260928 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (dd58e60) — every figure regenerates from this named code version and data image.
The record and the river
In short
LAFAYETTE PL holds 23 decreed rights on SOUTH BOULDER CREEK. A call at RURAL DITCH on BOULDER CREEK (1862-05-09), and 1 other currently reaches it: junior rights called out. 7 further calls state no district and sit outside this one, so they are counted here rather than assumed either way. That is today's position; the weeks ahead cannot be projected for it: only 1 analog year(s) have both flow and a complete administration record; 4 needed. In a median year over its last 15 recorded years it diverts 405 acre-feet. It was a party to 12 court cases that also touched 25 other structures.
Assembled from the figures on this page — every number above is checked against them before it is shown (10 checked). The detail, with its method, is in the cards below.
Download this structure
Everything on this page as data you can work with — and a README that makes it citable: the HydroBase snapshot it was built from, the build commit, what every column means, the method behind each derived figure, and that method's stated limits.
⇩ Full record (.zip) Print / save as PDF
Or one table at a time: rights.csv · annual_use.csv · curtailment_now.csv · court_cases.csv · co_parties.csv · call_climatology.csv
What is in the bundle
rights.csv— every decreed right, most senior first, with admin numbers, dates, amounts, uses and case numbers.annual_use.csv— recorded diversion by year, with releases accounted separately.curtailment_now.csv— each right's current priority status and how often it was out across analog years.court_cases.csv— the cases attached to its rights.co_parties.csv— the other structures that were parties to those cases. Not available anywhere else.call_climatology.csv— how often each right has been out of priority by week of season, with confidence intervals and the seasons the record could actually judge.README.txt— provenance, methods, limits, disclaimer, and links back to DWR's own records for verification.
Where it sits
Location as DWR records it (diversion). Faint dots are the neighbouring water; click any to open it.
Current administration
● Junior rights called out — call at RURAL DITCH (BOULDER CREEK, priority 1862-05-09).
● Junior rights called out — call at HOWELL DITCH (BOULDER CREEK, priority 1860-04-01).
Which of its rights are out of priority?
The outlook for the weeks ahead is not computable for this structure: only 1 analog year(s) have both flow and a complete administration record; 4 needed. Today’s position is a separate question, and it is answered in Current administration above — that screen reads the district’s active calls and needs no reference gage.
Where it sits in line
Priority 1859-10-01 — 9th most senior of the 1867 structures with decreed rights in this water districtDWR's administrative subdivision of a river basin; the unit calls are usually stated in..
Under prior appropriationColorado's rule for sharing water: first in time, first in right. Age decides, not proximity or need., everything ahead of it in this line is satisfied in full before it receives any water. Immediately ahead: SOUTH BOULDER CANON DITCH (1859-10-01). Immediately behind: GOODHUE DITCH (1859-10-01).
On SOUTH BOULDER CREEK at river mile 9.1, it is 10th of 59 down the reach. Immediately upstream: LAFAYETTE PIPELINE RETURN TO SOUTH BOULDER CREEK. Immediately downstream: LOUISVILLE PL.
Position on the modelled network, not a claim about whose water this is — a stream carries water from many rights at once, and diverted water returns to it.
Decreed rights (23)
| Admin noDWR's numeric encoding of a water right's seniority. Smaller is more senior; the integer part counts days from 1849-12-31 to the date that ranks the right. | AppropriatedWhen water was first put to beneficial use. It sets seniority unless a prior adjudication date is later. | AdjudicatedWhen the water court confirmed the right. A use decreed in 1975 was not a decreed use in 1955, however old the appropriation is. | AbsoluteA right actually put to use, as opposed to conditional -- a placeholder for a use not yet made. | ConditionalA right reserving a place in line for a use not yet made; it must be diligently pursued or it lapses. | Alt-pointAn absolute amount decreed at another structure that may be diverted here instead -- an alternate point of diversion or an exchange. DWR calls this the APEX amount; a right showing 0.0 absolute but an alt-point amount is exercised here under another structure's decree. | Decreed forWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 3561.00000 | 1859-10-01 | 1882-06-02 | 0.0 cfs | 0.0 | 1.725 cfs | Irrigation, Municipal +8 | 80CW0468, 90CW0108 +1 |
| 3744.00000 | 1860-04-01 | 1882-06-02 | 6.88 cfs | 0.0 | 1.632 cfs | Irrigation, Municipal +6 | 99CW0230, CA14023 +3 |
| 4853.00000 | 1863-04-15 | 1882-06-02 | 0.0 cfs | 0.0 | 1.248 cfs | Irrigation, Municipal +1 | 99CW0230, W9193 |
| 4869.00000 | 1863-05-01 | 1882-06-02 | 0.0 cfs | 0.0 | 0.043 cfs | Irrigation, Municipal +8 | 90CW0108, 80CW0468 |
| 5235.00000 | 1864-05-01 | 1882-06-02 | 0.0 cfs | 0.0 | 0.86 cfs | Irrigation, Municipal +2 | W8346, 99CW0230 +1 |
| 5511.00000 | 1865-02-01 | 1882-06-02 | 0.0 cfs | 0.0 | 0.064 cfs | Irrigation, Municipal +8 | 90CW0108, 80CW0468 +1 |
| 5570.00000 | 1865-04-01 | 1882-06-02 | 0.0 cfs | 0.0 | 5.924 cfs | Irrigation, Municipal +8 | 85CW0119, 80CW0468 +1 |
| 5935.00000 | 1866-04-01 | 1882-06-02 | 0.0 cfs | 0.0 | 3.0761 cfs | Irrigation, Municipal +8 | 05CW0295, 80CW0468 +1 |
| 5979.00000 | 1866-05-15 | 1882-06-02 | 0.0 cfs | 0.0 | 0.044 cfs | Irrigation, Municipal +8 | 90CW0108, 80CW0468 |
| 5996.00000 | 1866-06-01 | 1882-06-02 | 0.0 cfs | 0.0 | 0.017 cfs | Irrigation, Municipal +8 | 80CW0468, 90CW0108 |
| 7457.00000 | 1870-06-01 | 1882-06-02 | 0.0 cfs | 0.0 | 3.132 cfs | Irrigation, Municipal +8 | 90CW0108, 97CW0195 +1 |
| 7579.00000 | 1870-10-01 | 1882-06-02 | 0.0 cfs | 0.0 | 4.1747 cfs | Irrigation, Municipal +8 | 85CW0119, 80CW0468 +1 |
| 8141.00000 | 1872-04-15 | 1882-06-02 | 0.0 cfs | 0.0 | 18.32 cfs | Irrigation, Municipal +7 | 80CW0469, 83CW0319 +2 |
| 8553.00000 | 1873-06-01 | 1882-06-02 | 0.0 cfs | 0.0 | 23.207 cfs | Irrigation, Municipal +7 | 85CW0119, W8348 +2 |
| 11567.00000 | 1881-09-01 | 1907-03-13 | 0.0 cfs | 0.0 | 15.0 cfs | Irrigation, Municipal +4 | 85CW0119 |
| 12724.00000 | 1884-11-01 | 1907-03-13 | 0.0 cfs | 0.0 | 15.0 cfs | Irrigation, Municipal +4 | 85CW0119 |
| 14439.00000 | 1889-07-13 | 1900-12-19 | 0.0 cfs | 0.0 | 20.0 cfs | Municipal, Augmentation +1 | 82CW0376 |
| 15386.00000 | 1892-02-15 | 1907-03-13 | 0.0 cfs | 0.0 | 17.38 cfs | Irrigation, Municipal +4 | 85CW0119 |
| 17441.00000 | 1897-10-01 | 1907-03-13 | 0.0 cfs | 0.0 | 15.0 cfs | Irrigation, Municipal +4 | 85CW0119 |
| 20188.16893 | 1896-04-01 | 1907-03-13 | 0.0 cfs | 0.0 | 3.0 cfs | Municipal, Augmentation +1 | 82CW0375 |
| 20890.20624 | 1906-06-20 | 1907-11-03 | 0.0 cfs | 0.0 | 15.0 cfs | Irrigation, Municipal +4 | 85CW0119 |
| 27930.23981 | 1915-08-29 | 1953-09-28 | 0.0 cfs | 0.0 | 16.5 cfs | Irrigation, Municipal +4 | 85CW0119 |
| 58825.00000 | 2011-01-21 | 2011-12-31 | 0.0 cfs | 0.0 | 8.0 cfs | Irrigation, Municipal +7 | 05CW0295 |
Amounts marked cfs are flow rates; AF are stored volumes (storage rights are decreed in acre-feet). An absolute amount of 0.0 beside an alt-point amount is not a dead right: the water is decreed at another structure, and that row records permission to divert it here instead (an alternate point or exchange). A case listing several numbers reflects the original decree plus later change cases.
How much of this decree was in priority, by day
A right is in priority on a day when it is senior to every call administering this structure. Of its 6.88 cfs decreed rate, the average day over the last 6 year(s) had 6.88 cfs in priority (100% of the decree). No call in effect is a free river — that was 1.8% of days.
Calls are set and released at a time of day, not at midnight, so a day is counted by the hour: a call setting at 4pm costs that day a third of its rate, not all of it. A call began or ended mid-day on 9 of these days.
This is paper water. It is the decreed rate that was in priority — not water that was physically in the stream, and not water this structure diverted. A ditch can be in priority for 50 cfs on a day the creek carries five. What that distinction means →
| Year | Mean in priority (Apr–Sep) | Share of decree | Free-river days | Days fully out |
|---|---|---|---|---|
| 2026 | 6.88 cfs | 100% | 0 | 0 |
| 2025 | 6.88 cfs | 100% | 0 | 0 |
| 2024 | 6.88 cfs | 100% | 15 | 0 |
| 2023 | 6.88 cfs | 100% | 18 | 0 |
| 2022 | 6.88 cfs | 100% | 0 | 0 |
| 2021 | 6.88 cfs | 100% | 0 | 0 |
Show the last 120 days, day by day
| Date | In priority | Controlling call |
|---|---|---|
| 2026-10-12 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-11 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-10 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-09 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-08 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-07 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-06 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-05 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-04 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-03 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-02 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-10-01 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-30 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-29 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-28 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-27 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-26 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-25 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-24 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-23 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-22 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-21 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-20 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-19 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-18 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-17 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-16 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-15 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-14 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-13 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-12 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-11 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-10 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-09 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-08 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-07 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-06 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-05 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-04 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-03 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-02 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-09-01 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-31 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-30 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-29 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-28 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-27 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-26 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-25 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-24 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-23 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-22 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-21 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-20 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-19 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-18 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-17 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-16 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-15 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-14 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-13 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-12 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-11 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-10 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-09 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-08 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-07 | 6.88 cfs (100%) | HOWARD DITCH, 1860-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-06 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-05 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-04 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-03 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-02 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-08-01 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-31 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-30 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-29 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-28 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-27 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-26 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-25 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-24 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-23 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-22 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-21 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-20 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-19 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1860-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-18 | 6.88 cfs (100%) | SOUTH PLATTE RIVER AT WATERTON, 1860-12-31 · South Platte River · on a river this source flows into |
| 2026-07-17 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-16 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-04-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-15 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-14 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-13 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-12 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-11 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-10 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-09 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-08 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-07 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-06 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-05 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-04 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-03 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-02 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-07-01 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-30 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1862-05-25 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-29 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-28 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-27 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-26 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-25 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-24 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-23 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-22 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-21 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-20 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-19 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-18 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-17 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1863-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-16 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1864-05-01 · South Boulder Creek · same source, at or above the calling point |
| 2026-06-15 | 6.88 cfs (100%) | JONES DONNELLY DITCH, 1865-02-01 · South Boulder Creek · same source, at or above the calling point |
How this is worked out, and what it cannot tell you
- This is a decreed rate that was in priority -- paper water, not water that was available or diverted.
- Augmentation plans, exchanges and substitute supply plans let a structure divert lawfully while out of priority; none are modelled.
- Calls on the river this source flows into are included without a position test, so curtailment can be over-reported where the calling point sits above the confluence.
- DWR's administration is the authority. Scored against DWR's own call analysis, this method agreed on 95.5% of 85,822 structure-days (2026-08-29).
- Calls considered for this structure: 5983, of which 5289 sit on a river it flows into.
Legal record & documents
56 decreed actions on record across
19 court cases:
05CW0295, 97CW0195, 19CW3020, 85CW0119, 82CW0375, 82CW0376, W9193, W8500, W8348, W8347 and 9 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
05CW0295 | 4 | 2011-12-31 | O, S |
97CW0195 | 3 | 1997-12-31 | O, S |
19CW3020 | 1 | 1997-12-31 | S |
85CW0119 | 11 | 1953-09-28 | O, S |
82CW0375 | 1 | 1907-03-13 | S |
82CW0376 | 1 | 1900-12-19 | S |
W9193 | 1 | 1882-06-02 | O |
W8500 | 2 | 1882-06-02 | O |
W8348 | 2 | 1882-06-02 | O |
W8347 | 1 | 1882-06-02 | O |
W8346 | 2 | 1882-06-02 | O |
CA8960 | 1 | 1882-06-02 | O |
CA14023 | 1 | 1882-06-02 | O |
99CW0230 | 3 | 1882-06-02 | O |
90CW0108 | 6 | 1882-06-02 | O |
83CW0319 | 3 | 1882-06-02 | O |
82CW0305 | 2 | 1882-06-02 | O |
80CW0469 | 2 | 1882-06-02 | O |
80CW0468 | 9 | 1882-06-02 | O |
266 imaged documents on DWR’s shelf for this structure — 152 water-court documents across 21 cases, including 21 decrees. Every row opens the scanned PDF at DWR. Listing as of 2026-09-03.
- Decree in case 19CW3201 ↗ · imaged 2020-07-01 · 8 pages
- Decree in case 19CW3020 ↗ · imaged 2019-10-28 · 9 pages
- Decree in case CA14023 ↗ · imaged 2019-06-26 · 4 pages
- Decree in case 05CW0295 ↗ · imaged 2019-06-11 · 18 pages
- Decree in case 06CW0150 ↗ · imaged 2013-01-14 · 9 pages
- Decree in case 85CW0119 ↗ · imaged 2006-08-28 · 20 pages
- Decree in case 90CW0108 ↗ · imaged 2006-08-28 · 37 pages
- Decree in case CA8960 ↗ · imaged 2006-05-01 · 7 pages
- Decree in case 99CW0230 ↗ · imaged 2006-03-28 · 22 pages
- Decree in case 97CW0195 ↗ · imaged 2006-03-23 · 31 pages
- Decree in case 80CW0468 ↗ · imaged 2005-08-24 · 123 pages
- Decree in case 80CW0469 ↗ · imaged 2005-08-24 · 24 pages
- Decree in case 82CW0305 ↗ · imaged 2005-08-24 · 13 pages
- Decree in case 82CW0375 ↗ · imaged 2005-08-24 · 11 pages
- Decree in case 82CW0376 ↗ · imaged 2005-08-24 · 11 pages
- Decree in case 83CW0319 ↗ · imaged 2005-08-24 · 38 pages
- Decree in case W8346 ↗ · imaged 2005-08-24 · 77 pages
- Decree in case W8347 ↗ · imaged 2005-08-24 · 16 pages
- Decree in case W8348 ↗ · imaged 2005-08-24 · 43 pages
- Decree in case W8500 ↗ · imaged 2005-08-24 · 35 pages
- Decree in case W9193 ↗ · imaged 2005-08-24 · 10 pages
“Imaged” is the date DWR’s archive filed the scan, which is often years after the court acted (a 1911 decree can be imaged in 2011). The court’s own date is the adjudication date in the rights table.
Court record (152)
| Imaged | Case | Type | Pages | |
|---|---|---|---|---|
| 2026-04-09 | 19CW3201 |
NOTICE (DISMISSAL, ETC) | 1 | open ↗ |
| 2025-08-26 | 19CW3020 |
NOTICE (DISMISSAL, ETC) | 1 | open ↗ |
| 2020-07-01 | 19CW3201 |
DECREE | 8 | open ↗ |
| 2020-06-09 | 19CW3201 |
NOTICE (DISMISSAL, ETC) | 9 | open ↗ |
| 2020-06-09 | 19CW3201 |
REFEREE'S RULING | 8 | open ↗ |
| 2020-05-18 | 19CW3201 |
ORDER (OTHER) | 1 | open ↗ |
| 2020-05-15 | 19CW3201 |
STIPULATION/SETTLEMENT | 10 | open ↗ |
| 2020-02-18 | 19CW3201 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2020-01-06 | 19CW3201 |
STATEMENT OF OPPOSITION | 4 | open ↗ |
| 2019-11-13 | 19CW3201 |
APPLICATION | 10 | open ↗ |
| 2019-10-28 | 19CW3020 |
DECREE | 9 | open ↗ |
| 2019-10-01 | 19CW3020 |
NOTICE (DISMISSAL, ETC) | 10 | open ↗ |
| 2019-10-01 | 19CW3020 |
REFEREE'S RULING | 9 | open ↗ |
| 2019-09-11 | 19CW3020 |
ORDER (OTHER) | 1 | open ↗ |
| 2019-09-10 | 19CW3020 |
STIPULATION/SETTLEMENT | 10 | open ↗ |
| 2019-08-19 | 05CW0295 |
NOTICE (DISMISSAL, ETC) | 1 | open ↗ |
| 2019-07-22 | 19CW3020 |
RESPONSE TO SUMMARY OF CONSULTATION | 11 | open ↗ |
| 2019-06-26 | CA14023 |
DECREE | 4 | open ↗ |
| 2019-06-11 | 05CW0295 |
DECREE | 18 | open ↗ |
| 2019-05-16 | 19CW3020 |
SUMMARY OF CONSULTATION | 3 | open ↗ |
| 2019-04-15 | 19CW3020 |
STATEMENT OF OPPOSITION | 4 | open ↗ |
| 2019-03-11 | 19CW3020 |
APPLICATION | 12 | open ↗ |
| 2019-01-17 | 06CW0150 |
NOTICE (DISMISSAL, ETC) | 1 | open ↗ |
| 2017-07-24 | 99CW0230 |
REPORT/EXHIBIT | 5 | open ↗ |
| 2016-11-17 | 99CW0230 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2016-10-17 | 97CW0195 |
APPLICATION | 11 | open ↗ |
| 2016-10-17 | 97CW0195 |
STATEMENT OF OPPOSITION | 38 | open ↗ |
| 2013-12-04 | 05CW0295 |
APPLICATION | 12 | open ↗ |
| 2013-10-03 | 05CW0295 |
STIPULATION/SETTLEMENT | 20 | open ↗ |
| 2013-09-25 | 05CW0295 |
STIPULATION/SETTLEMENT | 20 | open ↗ |
| 2013-09-17 | 05CW0295 |
STIPULATION/SETTLEMENT | 20 | open ↗ |
| 2013-09-13 | 05CW0295 |
STIPULATION/SETTLEMENT | 20 | open ↗ |
| 2013-08-30 | 05CW0295 |
STIPULATION/SETTLEMENT | 20 | open ↗ |
| 2013-08-28 | 05CW0295 |
STIPULATION/SETTLEMENT | 41 | open ↗ |
| 2013-08-14 | 05CW0295 |
RULE 26 DISCLOSURES | 21 | open ↗ |
| 2013-07-30 | 05CW0295 |
RULE 26 DISCLOSURES | 12 | open ↗ |
| 2013-07-09 | 05CW0295 |
RULE 26 DISCLOSURES | 55 | open ↗ |
| 2013-07-05 | 05CW0295 |
RULE 26 DISCLOSURES | 19 | open ↗ |
| 2013-06-21 | 05CW0295 |
STIPULATION/SETTLEMENT | 17 | open ↗ |
| 2013-04-11 | 05CW0295 |
RULE 26 DISCLOSURES | 6 | open ↗ |
| 2013-04-05 | 05CW0295 |
RULE 26 DISCLOSURES | 4 | open ↗ |
| 2013-04-02 | 05CW0295 |
RULE 26 DISCLOSURES | 19 | open ↗ |
| 2013-04-01 | 05CW0295 |
RULE 26 DISCLOSURES | 15 | open ↗ |
| 2013-03-27 | 05CW0295 |
RULE 26 DISCLOSURES | 5 | open ↗ |
| 2013-03-11 | 05CW0295 |
RULE 26 DISCLOSURES | 313 | open ↗ |
| 2013-03-05 | 05CW0295 |
RULE 26 DISCLOSURES | 10 | open ↗ |
| 2013-02-27 | 05CW0295 |
RULE 26 DISCLOSURES | 5 | open ↗ |
| 2013-02-26 | 05CW0295 |
RULE 26 DISCLOSURES | 5 | open ↗ |
| 2013-01-14 | 06CW0150 |
DECREE | 9 | open ↗ |
| 2012-12-19 | 06CW0150 |
REFEREE'S RULING | 11 | open ↗ |
| 2012-11-20 | 06CW0150 |
STIPULATION/SETTLEMENT | 22 | open ↗ |
| 2012-08-14 | 06CW0150 |
STIPULATION/SETTLEMENT | 11 | open ↗ |
| 2011-05-25 | 05CW0295 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2011-05-02 | 05CW0295 |
STATEMENT OF OPPOSITION | 10 | open ↗ |
| 2010-09-03 | 90CW0108 |
OTHER | 19 | open ↗ |
| 2010-09-02 | 90CW0108 |
MOTION/PETITION | 30 | open ↗ |
| 2010-09-02 | 90CW0108 |
ORDER (OTHER) | 1 | open ↗ |
| 2010-09-02 | 90CW0108 |
STATEMENT OF OPPOSITION | 22 | open ↗ |
| 2010-09-02 | 90CW0108 |
STIPULATION/SETTLEMENT | 4 | open ↗ |
| 2010-09-02 | 90CW0108 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2008-10-06 | 05CW0295 |
NOTICE (DISMISSAL, ETC) | 1 | open ↗ |
| 2007-10-01 | 05CW0295 |
NOTICE (DISMISSAL, ETC) | 2 | open ↗ |
| 2007-09-25 | 05CW0295 |
NOTICE (DISMISSAL, ETC) | 1 | open ↗ |
| 2006-09-26 | 90CW0108 |
APPLICATION | 17 | open ↗ |
| 2006-09-25 | 97CW0195 |
SUMMARY OF CONSULTATION | 4 | open ↗ |
| 2006-09-11 | 06CW0150 |
SUMMARY OF CONSULTATION | 1 | open ↗ |
| 2006-09-01 | 06CW0150 |
STATEMENT OF OPPOSITION | 4 | open ↗ |
| 2006-08-30 | 06CW0150 |
STATEMENT OF OPPOSITION | 2 | open ↗ |
| 2006-08-30 | 06CW0150 |
STATEMENT OF OPPOSITION | 2 | open ↗ |
| 2006-08-28 | 85CW0119 |
DECREE | 20 | open ↗ |
| 2006-08-28 | 90CW0108 |
DECREE | 37 | open ↗ |
| 2006-08-21 | 06CW0150 |
STATEMENT OF OPPOSITION | 3 | open ↗ |
| 2006-07-13 | 97CW0195 |
NOTICE (DISMISSAL, ETC) | 1 | open ↗ |
| 2006-07-05 | 06CW0150 |
APPLICATION | 7 | open ↗ |
| 2006-05-01 | CA8960 |
DECREE | 7 | open ↗ |
| 2006-03-28 | 99CW0230 |
DECREE | 22 | open ↗ |
| 2006-03-28 | 99CW0230 |
ORDER (OTHER) | 4 | open ↗ |
| 2006-03-28 | 99CW0230 |
ORDER (OTHER) | 4 | open ↗ |
| 2006-03-28 | 99CW0230 |
RULE 26 DISCLOSURES | 52 | open ↗ |
| 2006-03-28 | 99CW0230 |
STATEMENT OF OPPOSITION | 28 | open ↗ |
| 2006-03-28 | 99CW0230 |
STIPULATION/SETTLEMENT | 16 | open ↗ |
| 2006-03-23 | 97CW0195 |
DECREE | 31 | open ↗ |
| 2006-03-23 | 97CW0195 |
STATEMENT OF OPPOSITION | 38 | open ↗ |
| 2006-03-23 | 97CW0195 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2006-03-17 | 90CW0108 |
ORDER (CASE DECISION) | 1 | open ↗ |
| 2006-03-07 | 80CW0468 |
MOTION/PETITION | 6 | open ↗ |
| 2006-03-07 | 80CW0468 |
ORDER (CASE DECISION) | 5 | open ↗ |
| 2006-03-07 | 80CW0468 |
OTHER | 6 | open ↗ |
| 2006-02-28 | 05CW0295 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2006-02-15 | 05CW0295 |
BRIEF | 9 | open ↗ |
| 2006-01-26 | 05CW0295 |
STATEMENT OF OPPOSITION | 68 | open ↗ |
| 2005-12-06 | 99CW0230 |
APPLICATION | 16 | open ↗ |
| 2005-11-02 | 90CW0108 |
NOTICE (DISMISSAL, ETC) | 4 | open ↗ |
| 2005-08-30 | 97CW0195 |
APPLICATION | 11 | open ↗ |
| 2005-08-24 | 80CW0468 |
APPLICATION | 24 | open ↗ |
| 2005-08-24 | 80CW0468 |
DECREE | 123 | open ↗ |
| 2005-08-24 | 80CW0468 |
ORDER (OTHER) | 22 | open ↗ |
| 2005-08-24 | 80CW0468 |
OTHER | 5 | open ↗ |
| 2005-08-24 | 80CW0468 |
STATEMENT OF OPPOSITION | 58 | open ↗ |
| 2005-08-24 | 80CW0469 |
APPLICATION | 9 | open ↗ |
| 2005-08-24 | 80CW0469 |
DECREE | 24 | open ↗ |
| 2005-08-24 | 80CW0469 |
ORDER (OTHER) | 3 | open ↗ |
| 2005-08-24 | 80CW0469 |
OTHER | 2 | open ↗ |
| 2005-08-24 | 80CW0469 |
STATEMENT OF OPPOSITION | 31 | open ↗ |
| 2005-08-24 | 82CW0305 |
APPLICATION | 9 | open ↗ |
| 2005-08-24 | 82CW0305 |
DECREE | 13 | open ↗ |
| 2005-08-24 | 82CW0305 |
ORDER (OTHER) | 8 | open ↗ |
| 2005-08-24 | 82CW0305 |
OTHER | 2 | open ↗ |
| 2005-08-24 | 82CW0305 |
STATEMENT OF OPPOSITION | 17 | open ↗ |
| 2005-08-24 | 82CW0375 |
APPLICATION | 3 | open ↗ |
| 2005-08-24 | 82CW0375 |
DECREE | 11 | open ↗ |
| 2005-08-24 | 82CW0375 |
ORDER (OTHER) | 10 | open ↗ |
| 2005-08-24 | 82CW0375 |
OTHER | 2 | open ↗ |
| 2005-08-24 | 82CW0375 |
STATEMENT OF OPPOSITION | 22 | open ↗ |
| 2005-08-24 | 82CW0376 |
APPLICATION | 3 | open ↗ |
| 2005-08-24 | 82CW0376 |
DECREE | 11 | open ↗ |
| 2005-08-24 | 82CW0376 |
ORDER (OTHER) | 10 | open ↗ |
| 2005-08-24 | 82CW0376 |
OTHER | 2 | open ↗ |
| 2005-08-24 | 82CW0376 |
STATEMENT OF OPPOSITION | 18 | open ↗ |
| 2005-08-24 | 83CW0319 |
APPLICATION | 8 | open ↗ |
| 2005-08-24 | 83CW0319 |
DECREE | 38 | open ↗ |
| 2005-08-24 | 83CW0319 |
ORDER (OTHER) | 7 | open ↗ |
| 2005-08-24 | 83CW0319 |
OTHER | 2 | open ↗ |
| 2005-08-24 | 83CW0319 |
STATEMENT OF OPPOSITION | 34 | open ↗ |
| 2005-08-24 | 85CW0119 |
APPLICATION | 18 | open ↗ |
| 2005-08-24 | 85CW0119 |
OTHER | 4 | open ↗ |
| 2005-08-24 | W8346 |
APPLICATION | 8 | open ↗ |
| 2005-08-24 | W8346 |
DECREE | 77 | open ↗ |
| 2005-08-24 | W8346 |
MOTION/PETITION | 2 | open ↗ |
| 2005-08-24 | W8346 |
MOTION/PETITION | 1 | open ↗ |
| 2005-08-24 | W8346 |
NOTICE (DISMISSAL, ETC) | 2 | open ↗ |
| 2005-08-24 | W8346 |
ORDER (OTHER) | 23 | open ↗ |
| 2005-08-24 | W8346 |
OTHER | 1 | open ↗ |
| 2005-08-24 | W8346 |
OTHER | 1 | open ↗ |
| 2005-08-24 | W8346 |
OTHER | 10 | open ↗ |
| 2005-08-24 | W8346 |
OTHER | 8 | open ↗ |
| 2005-08-24 | W8346 |
STIPULATION/SETTLEMENT | 1 | open ↗ |
| 2005-08-24 | W8347 |
APPLICATION | 7 | open ↗ |
| 2005-08-24 | W8347 |
DECREE | 16 | open ↗ |
| 2005-08-24 | W8347 |
ORDER (OTHER) | 1 | open ↗ |
| 2005-08-24 | W8347 |
OTHER | 4 | open ↗ |
| 2005-08-24 | W8347 |
STIPULATION/SETTLEMENT | 3 | open ↗ |
| 2005-08-24 | W8348 |
APPLICATION | 8 | open ↗ |
| 2005-08-24 | W8348 |
DECREE | 43 | open ↗ |
| 2005-08-24 | W8348 |
OTHER | 4 | open ↗ |
| 2005-08-24 | W8500 |
APPLICATION | 24 | open ↗ |
| 2005-08-24 | W8500 |
DECREE | 35 | open ↗ |
| 2005-08-24 | W8500 |
OTHER | 4 | open ↗ |
| 2005-08-24 | W8500 |
STIPULATION/SETTLEMENT | 4 | open ↗ |
| 2005-08-24 | W9193 |
APPLICATION | 3 | open ↗ |
| 2005-08-24 | W9193 |
DECREE | 10 | open ↗ |
| 2005-08-24 | W9193 |
OTHER | 2 | open ↗ |
Division filings (114)
| Date | Type | Pages | |
|---|---|---|---|
| 2011-08-11 | Correspondence LOUISVILLE, CITY OF ENGINEERING REPORT COVERING HARPER RESERVOIR... | 50 | open ↗ |
| 2011-07-28 | Correspondence LAFAYETTE CASE NOS W-8346 AND W-8348 SOUTH BOULDER CREEK STORAGE PRIORITIES | 4 | open ↗ |
| 2009-02-26 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 1 | open ↗ |
| 2009-02-26 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 1 | open ↗ |
| 2008-10-08 | Correspondence 1859 PRIORITY DECREED TO THE LOWER BOULDER DITCH | 2 | open ↗ |
| 2008-10-08 | Correspondence 1859 PRIORITY DECREED TO THE LOWER BOULDER DITCH | 2 | open ↗ |
| 2007-06-18 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 145 | open ↗ |
| 2007-06-18 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 145 | open ↗ |
| 2007-04-16 | Correspondence LOWER BOULDER DITCH USE NOTIFICATION | 1 | open ↗ |
| 2007-04-16 | Correspondence LOWER BOULDER DITCH USE NOTIFICATION | 1 | open ↗ |
| 2007-03-26 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 2007-03-26 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 2007-03-14 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 2 | open ↗ |
| 2007-03-14 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 2 | open ↗ |
| 2007-03-13 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 EASE OF WATER FOR... | 1 | open ↗ |
| 2007-03-13 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 EASE OF WATER FOR... | 1 | open ↗ |
| 2007-03-13 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 EASE OF WATER FOR... | 1 | open ↗ |
| 2007-03-09 | Correspondence DRAFT LOWER BOULDER ADMIN LETTER | 11 | open ↗ |
| 2007-03-09 | Correspondence DRAFT LOWER BOULDER ADMIN LETTER | 11 | open ↗ |
| 2007-02-02 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 12 | open ↗ |
| 2007-02-02 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 12 | open ↗ |
| 2006-11-29 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE AT THE LOWER BOULDER DITCH HEADGATE | 5 | open ↗ |
| 2006-11-29 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE AT THE LOWER BOULDER DITCH HEADGATE | 5 | open ↗ |
| 2006-11-29 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 41 | open ↗ |
| 2006-11-29 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE IN THE LOWER BOULDER DITCH HEADGATE | 41 | open ↗ |
| 2006-11-16 | Correspondence LOWER BOULDER MEETING | 1 | open ↗ |
| 2006-11-16 | Correspondence LOWER BOULDER MEETING | 1 | open ↗ |
| 2005-07-28 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE TO THE LOWER BOULDER DITCH HEADGATE | 38 | open ↗ |
| 2005-07-28 | Correspondence ADMINISTRATION OF WATER RIGHTS DECREE TO THE LOWER BOULDER DITCH HEADGATE | 38 | open ↗ |
| 2003-08-29 | Correspondence LOWER BOULDER RESERVOIR & DITCH COMPANY | 10 | open ↗ |
| 2003-08-29 | Correspondence LOWER BOULDER RESERVOIR & DITCH COMPANY | 10 | open ↗ |
| 2003-04-21 | Correspondence LOWER BOULDER RESERVOIR & DITCH COMPANY BY-LAWS | 11 | open ↗ |
| 2003-04-21 | Correspondence LOWER BOULDER RESERVOIR & DITCH COMPANY BY-LAWS | 11 | open ↗ |
| 2000-07-27 | Correspondence LAFAYETTE CASE NO 97CW195 WATER ACCOUNTING FORMS | 24 | open ↗ |
| 2000-04-25 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 2000-04-25 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 2000-04-25 | Correspondence LAFAYETTE CASE NO 80CW468 LEASED WATER FOR AGRICULTURAL USE | 1 | open ↗ |
| 2000-01-06 | Correspondence LAFAYETTE CASE NO 97CW195 SUBSTITUTE WATER SUPPLY PLAN FOR 1999/2000 | 2 | open ↗ |
| 1999-12-21 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 1999/2000 SUBSTITUTE... | 4 | open ↗ |
| 1999-12-21 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 1999/2000 SUBSTITUTE... | 4 | open ↗ |
| 1999-12-21 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 1999/2000 SUBSTITUTE... | 4 | open ↗ |
| 1999-04-15 | Correspondence LAFAYETTE CASE NO 80CW468 LOWER BOULDER DITCH COMPANY LEASE FOR... | 1 | open ↗ |
| 1999-04-13 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1999-04-13 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1998-11-24 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 1998/9 SUBSTITUTE... | 4 | open ↗ |
| 1998-11-24 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 1998/9 SUBSTITUTE... | 4 | open ↗ |
| 1998-11-24 | Correspondence LAFAYETTE CASE NOS 97CW195, 90CW 108, 80CW468 1998/9 SUBSTITUTE... | 4 | open ↗ |
| 1998-04-07 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 3 | open ↗ |
| 1998-04-07 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 3 | open ↗ |
| 1997-04-10 | Correspondence LAFAYETTE CASE NOS 80CW468 & 80CW469 | 3 | open ↗ |
| 1996-10-04 | Correspondence LAFAYETTE RESPONSE LETTER (SEPTEMBER 18, 1996) | 2 | open ↗ |
| 1996-09-18 | Correspondence LAFAYETTE USE OF SOUTH BOULDER CREEK TO CONVEY WATER | 2 | open ↗ |
| 1996-04-12 | Correspondence LAFAYETTE CASE NO 80CW468 COAL RIDGE WATER LEASE AGREEMENT FOR... | 2 | open ↗ |
| 1996-04-08 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1996-04-08 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1994-04-11 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1994-04-11 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1992-09-25 | Correspondence LAFAYETTE CASE NO W-8346 | 12 | open ↗ |
| 1992-04-08 | Correspondence LAFAYETTE CASE NOS W-8346 AND W-8348 | 2 | open ↗ |
| 1992-03-04 | Correspondence LAFAYETTE CASE NOS W-8346 & W-8348 | 17 | open ↗ |
| 1991-09-06 | Correspondence LAFAYETTE CASE NOS W-8346 AND W-8348 WINTER BORROWING | 2 | open ↗ |
| 1990-05-23 | Correspondence LAFAYETTE CASE NOS W-8346 ANS W-8348 REPAYMENT OF BORROWED WATER | 2 | open ↗ |
| 1990-05-23 | Correspondence LAFAYETTE CASE NOS W-8346 ANS W-8348 REPAYMENT OF BORROWED WATER | 2 | open ↗ |
| 1990-05-16 | Correspondence LAFAYETTE CASE NOS 80CW468 & 80CW469 LEASE OF LOWER BOULDER AND... | 2 | open ↗ |
| 1990-04-25 | Correspondence LAFAYETTE CASE NOS W-8346 & W-8348 | 3 | open ↗ |
| 1990-04-13 | Correspondence LAFAYETTE CASE NO 80CW468 LEASE OF LOWER BOULDER AND COAL RIDGE... | 3 | open ↗ |
| 1990-03-30 | Correspondence LAFAYETTE CASE NO W-8346 APPLICATIONS | 1 | open ↗ |
| 1989-10-19 | Correspondence LAFAYETTE CASE NOS W-8346 ANS W-8348 WATER BORROWING PROGRAM | 2 | open ↗ |
| 1989-10-19 | Correspondence LAFAYETTE CASE NOS W-8346 ANS W-8348 WATER BORROWING PROGRAM | 2 | open ↗ |
| 1989-05-18 | Correspondence LOUISVILLE, CITY OF CASE NO W-8500 APPLICATION | 5 | open ↗ |
| 1989-04-19 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1989-04-19 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1989-04-19 | Correspondence LAFAYETTE CASE NO 80CW468 LEASE OF LEYNER-COTTONWOOD DITCH RIGHTS | 1 | open ↗ |
| 1988-08-29 | Correspondence LAFAYETTE CASE NO 85CW119 | 1 | open ↗ |
| 1988-05-13 | Correspondence LOUISVILLE, CITY OF CASE NO W-8500 APPLICATION | 4 | open ↗ |
| 1987-12-01 | Correspondence LAFAYETTE ENGINEERING REPORT CASE NO 85CW119 | 140 | open ↗ |
| 1987-11-23 | Correspondence LAFAYETTE CASE NOS W-8346 ANS W-8348 WATER BORROWING PROGRAM | 2 | open ↗ |
| 1987-11-23 | Correspondence LAFAYETTE CASE NOS W-8346 ANS W-8348 WATER BORROWING PROGRAM | 2 | open ↗ |
| 1987-09-21 | Correspondence LAFAYETTE CASE NO W-8346 | 1 | open ↗ |
| 1987-05-31 | Correspondence LOUISVILLE, CITY OF CASE NO 82CW375 ENGINEERING REPORT COVERING... | 116 | open ↗ |
| 1987-05-18 | Correspondence LOUISVILLE, CITY OF CASE NO W-8500 APPLICATION | 4 | open ↗ |
| 1987-05-15 | Correspondence LOUISVILLE, CITY OF CASE NO W-8500 FIELD INVESTIGATION | 3 | open ↗ |
| 1987-04-09 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1987-04-09 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1987-04-09 | Correspondence LAFAYETTE CASE NO 80CW468 LEASE OF LEYNER-COTTONWOOD DITCH RIGHTS | 1 | open ↗ |
| 1986-08-31 | Correspondence LAFAYETTE CASE NOS W-8346 AND W-8348 | 3 | open ↗ |
| 1986-08-01 | Correspondence LAFAYETTE MAUAL FOR WATER RIGHTS OPERATION | 84 | open ↗ |
| 1986-07-31 | Correspondence LOUISVILLE, CITY OF CASE NO 83CW319 ACKNOWLEDGEMENT RECEIPT (JULY 14, 1986) | 1 | open ↗ |
| 1986-04-07 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1986-04-07 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1986-04-07 | Correspondence LAFAYETTE CASE NO 80CW468 LEASE OF LOWER BOULDER DITCH RIGHTS | 1 | open ↗ |
| 1986-04-07 | Correspondence LAFAYETTE CASE NO 80CW468 | 3 | open ↗ |
| 1985-05-31 | Correspondence LOUISVILLE, CITY OF CASE NO 83CW319 RESPONSE LETTER REQUESTING TO... | 4 | open ↗ |
| 1985-04-17 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1985-04-17 | Correspondence LAFAYETTE CASE NOS 80CW468 AND 80CW469 DECREED WATER RIGHTS | 2 | open ↗ |
| 1985-03-27 | Correspondence LOUISVILLE, CITY OF VS CITY OF LAFAYETTE | 10 | open ↗ |
| 1985-03-14 | Correspondence COTTONWOOD CASE NO 81CW142 AND PROPOSED CASE NO 80CW468 | 2 | open ↗ |
| 1985-03-06 | Correspondence LOUISVILLE, CITY OF CASE NO W-9193 CHANGE OF WATER RIGHTS | 1 | open ↗ |
| 1985-01-23 | Correspondence LOUISVILLE, CITY OF CASE NO 83CW319 ACKNOWLEDGEMENT RECEIPT FOR... | 1 | open ↗ |
| 1984-10-01 | Correspondence LAFAYETTE DOCUMENTATION FOR THE TRANSFER OF SHARES CASE NO 80CW468 | 194 | open ↗ |
| 1984-07-09 | Correspondence LOUISVILLE, CITY OF CASE NO 82CW305 DRAFT ENGINEERING REPORT FOR... | 14 | open ↗ |
| 1984-04-16 | Correspondence LAFAYETTE CASE NO 80CW469 DECREED WATER RIGHTS | 1 | open ↗ |
| 1984-01-30 | Correspondence LOUISVILLE, CITY OF CASE NO 83CW319 REVIEW OF REQUEST ASSISTANCE... | 2 | open ↗ |
| 1984-01-19 | Correspondence LOUISVILLE, CITY OF CASE NO 83CW319 PROGRAM TO ENLARGE RAW WATER... | 1 | open ↗ |
| 1983-04-20 | Correspondence LAFAYETTE CASE NO 80CW469 DECREED WATER RIGHTS | 1 | open ↗ |
| 1983-03-28 | Correspondence LOUISVILLE, CITY OF CASE NO 83CW319 DIVERSION PRACTICES | 4 | open ↗ |
| 1983-03-16 | Correspondence LOUISVILLE, CITY OF CASE NO 83CW319 WATER RIGHTS | 2 | open ↗ |
| 1982-03-15 | Correspondence CITY OF LAFAYETTE; APPROVAL FOR A TEMPORARY ALTERNATE POINT OF DIVERSION | 2 | open ↗ |
| 1981-12-31 | Correspondence LAFAYETTE CASE NO 85CW119 MONTHLY SUMMARY OF DITCH DIVERSIONS AND... | 8 | open ↗ |
| 1981-12-23 | Correspondence WATER BORROWING PROGRAM | 2 | open ↗ |
| 1981-12-18 | Correspondence CITY OF LAFAYETTE'S ELDORADO SPRINGS PIPELINE | 1 | open ↗ |
| 1980-11-18 | Accounting & Spreadsheets LAFAYETTE NON-IRRIGATION SEASON WATER BORROWING PROGRAM | 2 | open ↗ |
| 1979-01-01 | Correspondence LAFAYETTE, CITY OF TRANSFERS 1979 | 196 | open ↗ |
| 1978-07-27 | Correspondence LAFAYETTE CASE NO W-8346 EXCHANGE PLAN | 3 | open ↗ |
Imaged documents at DWR. DWR keeps the scanned documents for this structure — decrees, rulings, plats, correspondence — in its Laserfiche archive. Open the list directly: imaged documents for 0600597 ↗ (indexed by structure, not by case — the cases listed above appear within the list).
Other DWR records for this structure: DWR’s page for this structure ↗ — net amounts, water rights, transactions & adjudication history, and diversion records, all on that one page. On this site: the district’s full legal picture →
Filings that would move water above this headgate
4 water-court applications in the monthly resumes name a structure on SOUTH BOULDER CREEK upstream of this headgate. A new right, exchange or change of use up there changes what arrives down here — the resume is the public notice, and the opposition window is how anyone affected answers it.
| Month | Case | What it asks | Upstream structures | Oppose by |
|---|---|---|---|---|
| 2026-08 | 2026CW3125 |
reasonable diligence | GROSS RES (7.9 mi up) | 2026-10-31 (19d) |
| 2026-06 | 2026CW3093 |
reasonable diligence | GROSS RES (7.9 mi up) | 2026-08-31 |
| 2025-10 | 2025CW3137 |
reasonable diligence | GROSS RES (7.9 mi up) | 2025-12-31 |
| 2025-04 | 2025CW3049 |
reasonable diligence | GROSS RES (7.9 mi up) | 2025-06-30 |
Judged on this structure’s own named stream only — a filing on a tributary that joins upstream is not judged here. Filings that name structures only in prose, without a WDID, are invisible to this card. Reading aid, not legal advice; the deadline is computed from C.R.S. 37-92-302(3), and the court’s own notice controls.
How often is it out of priority?
Across the 11 seasons whose call record is complete enough to judge this structure (2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026), week by week from April.
3561.00000 · never out of priority in these seasons
7579.00000 · peaks at
11 of 11 seasons
58825.00000 · peaks at
11 of 11 seasons
Snow sets the clock here. In the driest third of snow years (3 seasons), the call settled in for the season around June 3; in 1 of them it never lifted at all. In the middle third (5 seasons), the call settled in for the season around June 24 (June 17 to July 1 across those years); in 1 of them it never lifted at all. In the wettest third (3 seasons), the call settled in for the season around June 24 (May 6 to June 24 across those years); in 1 of them it never lifted at all.
Snow years ranked by the district’s April 1 snow-water percentile across 3 SNOTEL sites; 11 seasons carry both a snow reading and a judgeable call record. How the past played out, not a forecast.
Why only 11 seasons, and what the bars mean
Each bar is one week: how many of those seasons that right was out of priority under a call this site can lawfully attribute to this structure. Green is never, red is every season on record.
The short record is a property of DWR's data, not of the river. A call only counts against a structure when we can establish it applies — by the districts named in its set comments, or by stream mile on the same source. DWR did not begin stating affected districts routinely until about 2015: fewer than one call in ten can be judged before then, against roughly two in three since. A season we cannot judge is not a season without calls, so it is dropped rather than counted as quiet — 12 seasons dropped here.
This is a frequency over past seasons, not a forecast. It says nothing about what the division engineer will do this year.
Structures it shares court cases with
This structure was a party to 12 court cases that also touched 25 other structures — changes of water right, augmentation plans, exchanges. Being parties to the same case does not by itself mean water moved between them; which way it ran, and how much, is in the decree.
Also a party to 7 omnibus
adjudications
(80CW0468, 28 structures; W8346, 20 structures; 85CW0119, 19 structures).
Those settled many rights at once and are listed separately: they say
these structures were adjudicated together, not that they deal with
each other.
How this is derived
Every court action DWR records for a structure
carries its case number. Where one case number appears in the records of
several structures, those structures were parties to the same proceeding.
This is read straight from the cached transaction tables — no
document was interpreted to build it. Case numbers are validated against
the known Colorado formats first: the case column also contains stray
dates (10/04/1884 appears on 98 Clear Creek rows), and
treating one as a case number would invent a shared proceeding between
60 unrelated structures. Cases spanning more than
12 structures are separated out as omnibus
adjudications. The filing year comes from the case number, not from the
row's adjudication date — that date belongs to the water right the
action describes, so a 2006 case legitimately carries a 1989 date.
Recorded use (last 15 years on record)
Years far under the decreed amount? That gap has a name — paper water vs. wet water, explained on this structure.
In a median year this structure has a recorded diversion of 405 AF. Its most recent year on record, 2025, came in at 352 AF — 87% of that, and 6th lowest of the 15 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| Year | Diverted (AFA volume: one acre covered a foot deep, about 326,000 gallons -- roughly a suburban household's outdoor use for a year.) | Compared with its own record | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 2011 | 459 | 9th lowest of 15 · 113% of median | — | 335 | 1.4 |
| 2012 | 323 | 4th lowest of 15 · 80% of median | — | 244 | 1.1 |
| 2013 | 356 | 7th lowest of 15 · 88% of median | — | 254 | 0.9 |
| 2014 | 198 | 2nd lowest of 15 · 49% of median | — | 236 | 0.9 |
| 2015 | 299 | 3rd lowest of 15 · 74% of median | — | 299 | 1.2 |
| 2016 | 405 | 8th lowest of 15 · 100% of median | — | 205 | 2.8 |
| 2017 | 641 | 10th lowest of 15 · 158% of median | — | 356 | 2.2 |
| 2018 | 677 | 13th lowest of 15 · 167% of median | — | 295 | 2.4 |
| 2019 | 676 | 12th lowest of 15 · 167% of median | — | 365 | 2.6 |
| 2020 | 813 | 14th lowest of 15 · 201% of median | — | 334 | 5.3 |
| 2021 | 1,912 | 15th lowest of 15 · 472% of median | — | 301 | 8.7 |
| 2022 | 29 | 1st lowest of 15 · 7% of median | — | 29 | 0.9 |
| 2023 | 324 | 5th lowest of 15 · 80% of median | — | 173 | 2.7 |
| 2024 | 648 | 11th lowest of 15 · 160% of median | — | 342 | 2.1 |
| 2025 | 352 | 6th lowest of 15 · 87% of median | — | 92 | 2.1 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
Its reference gage, Louisville Pipeline: no clear flow trend.
How good is our record of it?
Grade A (10/10 points) — the components below are the finding; the letter alone is not.
The rubric, component by component
| Check | State | Detail |
|---|---|---|
| identity | complete | name, type, and water source all on file |
| decreed rights | on file | 23 right(s), seniority decoded |
| diversion record | current | 14539 measured days, newest 331 day(s) before the data's end (DWR publishes ~1 year in arrears) |
| record continuity | continuous | 100% of the irrigation seasons in 1972-2025 carry measured days |
| published-record stability | stable | no upstream revisions recorded against this structure |
Advisory reading aid on public data — not an administrative or legal conclusion, not a title opinion, and not a substitute for DWR administration or an engineer's analysis. Methodology review status is disclosed at hydrohistorian's basin pages.
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