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· every download of this record carries its certificate idJEFFERSON LAKE RES
Structure dossier · WDID 2303981 · RESERVOIR · JEFFERSON LAKE FORK · DWR record
Jefferson Lake Res is a reservoir on Jefferson Lake Fork in Colorado. This page is its public record: the water it has a right to, whether it may take it today, and its history, compiled from the Colorado Division of Water Resources.
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 2026-10-13 21:38 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.
Who owns it
- City of Aurora (local government) — as reported to the National Inventory of Dams (USACE) ↗.
DWR’s own records name no owner for a ditch, reservoir or well, so this comes from the source shown and can be out of date. Organisations only: a private landowner’s name is never listed.
Where this structure is measured
| Gage | Flowing now | Record | How we know |
|---|---|---|---|
| JEFFERSON LAKE RES 2303981A | — | 2011–2011, 112 days | named for this WDID |
| JEFFERSON LAKE NEAR JEFFERSON, CO JEFLAKCO | — | — | co-located, 15 m |
| JEFFERSON CREEK BELOW JEFFERSON LAKE NEAR JEFFERSON, CO JEFBELCO | 0.42 cfs | 2012–2026, 2,303 days | co-located, 97 m |
A green link is DWR's own: either its telemetry inventory maps this WDID to that station, or the station is named for this WDID (0700553 → 0700553A). An amber one is ours — the station sits within 250 m and shares a distinctive word with this structure's name, which is a strong hint rather than a DWR statement that this gage meters this structure. Wrong? Tell us.
In short
JEFFERSON LAKE RES holds 26 decreed rights on JEFFERSON LAKE FORK. A call at SOUTH PLATTE RIVER AT WATERTON on SOUTH PLATTE RIVER (1863-12-30) currently reaches it: fully 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: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it. In a median year over its last 15 recorded years it diverts 3,317 acre-feet. It was a party to 3 court cases that also touched 20 other structures.
Assembled from the figures on this page — every number above is checked against them before it is shown (7 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 (storage). Faint dots are the neighbouring water; click any to open it.
Dam safety
| Dam | JEFFERSON LAKE (completed 1951) |
|---|---|
| Hazard class | High |
| Condition at last inspection | Satisfactory (2026-08-07) |
| Storage restriction | None on file |
| Normal storage | 2,560 AF |
| Physical status | Active |
| Emergency action plan | Yes |
Source: DWR Dam Safety’s jurisdictional-dam inventory
(damsafety/damsafetydaminfojd), refreshed weekly.
Joined on this structure’s own WDID as DWR
records it on the dam. Hazard class describes the
consequence of failure, not the likelihood of it.
DWR’s dam record.
Current administration
● Fully called out — call at SOUTH PLATTE RIVER AT WATERTON (SOUTH PLATTE RIVER, priority 1863-12-30).
Which of its rights are out of priority?
The outlook for the weeks ahead is not computable for this structure: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it. 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 1874-10-01 — 462nd most senior of the 21886 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: TARRYALL RES (1874-10-01). Immediately behind: RANDALL NICHOLAS DITCH (1874-10-14).
Decreed rights (26)
| 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 |
|---|---|---|---|---|---|---|---|
| 9040.00000 | 1874-10-01 | 1889-10-18 | 0.0 cfs | 0.0 | 5.99 cfs | Municipal, Augmentation +1 | W7936 |
| 9053.00000 | 1874-10-14 | 1889-10-18 | 0.0 cfs | 0.0 | 1.62 cfs | Municipal, Augmentation +1 | W7936 |
| 9266.00000 | 1875-05-15 | 1889-10-18 | 0.0 cfs | 0.0 | 2.03 cfs | Municipal, Augmentation +1 | W7936, 93CW0140 |
| 9283.00000 | 1875-06-01 | 1889-10-18 | 0.69 cfs | 0.0 | 0.83 cfs | Irrigation, Municipal +8 | 92CW0156 |
| 10722.00000 | 1879-05-10 | 1889-10-18 | 0.0 cfs | 0.0 | 5.26 cfs | Municipal, Augmentation +1 | W7936 |
| 10732.00000 | 1879-05-20 | 1889-10-18 | 0.0 cfs | 0.0 | 5.5 cfs | Municipal, Augmentation +1 | W7936 |
| 10763.00000 | 1879-06-20 | 1889-10-18 | 0.0 cfs | 0.0 | 0.64 cfs | Municipal, Augmentation +1 | W7936 |
| 10836.00000 | 1879-09-01 | 1889-10-18 | 2.2 cfs | 0.0 | 2.99 cfs | Irrigation, Municipal +8 | 92CW0156 |
| 11032.00000 | 1880-03-15 | 1889-10-18 | 0.0 cfs | 0.0 | 2.54 cfs | Municipal, Augmentation +1 | 88CW0263, W7936 |
| 11129.00000 | 1880-06-20 | 1889-10-18 | 0.0 cfs | 0.0 | 2.0 cfs | Municipal, All beneficial uses | 88CW0263 |
| 11170.00000 | 1880-07-31 | 1889-10-18 | 0.0 cfs | 0.0 | 0.83 cfs | Municipal, Augmentation +1 | W7936 |
| 11263.00000 | 1880-11-01 | 1889-10-18 | 0.0 cfs | 0.0 | 3.37 cfs | Municipal, Augmentation +1 | W7936 |
| 11453.00000 | 1881-05-10 | 1889-10-18 | 1.03 cfs | 0.0 | 0.57 cfs | Irrigation, Municipal +8 | 92CW0156, 86CW0223 |
| 11458.00000 | 1881-05-15 | 1889-10-18 | 0.38 cfs | 0.0 | 1.27 cfs | Irrigation, Municipal +8 | 92CW0156 |
| 11809.00000 | 1882-05-01 | 1889-10-18 | 0.0 cfs | 0.0 | 1.5 cfs | Municipal, All beneficial uses | 88CW0262 |
| 11813.00000 | 1882-05-05 | 1889-10-18 | 0.0 cfs | 0.0 | 1.63 cfs | Municipal, Augmentation +1 | W7936 |
| 11854.00000 | 1882-06-15 | 1889-10-18 | 0.0 cfs | 0.0 | 0.79 cfs | Municipal, Augmentation +1 | W7936 |
| 12205.00000 | 1883-06-01 | 1889-10-18 | 0.0 cfs | 0.0 | 0.19 cfs | Municipal, Augmentation +1 | W7936 |
| 12924.00000 | 1885-05-20 | 1889-10-18 | 0.0 cfs | 0.0 | 2.6 cfs | Municipal, All beneficial uses | 88CW0263 |
| 13964.00000 | 1888-03-25 | 1889-10-18 | 0.0 cfs | 0.0 | 3.22 cfs | Municipal, Augmentation +1 | W7936 |
| 14536.12936 | 1885-06-01 | 1913-05-22 | 0.0 cfs | 0.0 | 3.5 cfs | Municipal, All beneficial uses | 88CW0263 |
| 14536.14056 | 1888-06-25 | 1913-05-22 | 4200.0 AF | 0.0 | — | Irrigation | CA1678 |
| 14536.14427 | 1889-07-01 | 1896-05-28 | 0.0 cfs | 0.0 | 5.7 cfs | Municipal, All beneficial uses | 88CW0262 |
| 16718.00000 | 1895-10-09 | 1913-05-22 | 0.0 cfs | 0.0 | 6.7 cfs | Municipal, All beneficial uses | 88CW0262 |
| 28685.00000 | 1928-07-15 | 1953-03-24 | 372.536 AF | 1589.964 AF | — | Irrigation | CA3286 |
| 29219.00000 | 1929-12-31 | 1953-03-24 | 3552.464 AF | 0.0 | — | Irrigation | CA3286 |
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 4.3 cfs decreed rate, the average day over the last 6 year(s) had 3.687 cfs in priority (86% of the decree). No call in effect is a free river — that was 6.4% of days.
On 115 days some rights were in priority and others were not — seniority splits a decree rather than switching it off. 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 33 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 | 3.4 cfs | 79% | 0 | 38 |
| 2025 | 2.74 cfs | 64% | 0 | 58 |
| 2024 | 3.1 cfs | 72% | 49 | 37 |
| 2023 | 3.84 cfs | 89% | 64 | 5 |
| 2022 | 2.42 cfs | 56% | 3 | 54 |
| 2021 | 4.3 cfs | 100% | 0 | 0 |
Show the last 120 days, day by day
| Date | In priority | Controlling call |
|---|---|---|
| 2026-10-13 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-12 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-11 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-10 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-09 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-08 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-07 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-06 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-05 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-04 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-03 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-02 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-10-01 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-30 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-29 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-28 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-27 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-26 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-25 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-24 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-23 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-22 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-21 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-20 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-19 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-18 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-17 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-16 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-15 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-14 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-13 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-12 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-11 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-10 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-09 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-08 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-07 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-06 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-05 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-04 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-03 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-02 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-09-01 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-31 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-30 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-29 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-28 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-27 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-26 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-25 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-24 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-23 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-22 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-21 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-20 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-19 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-18 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-17 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-16 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-15 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-14 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-13 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-12 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-11 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-10 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-09 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-08 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-07 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-06 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-05 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-04 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-03 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-02 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-08-01 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-31 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-30 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-29 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-28 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-27 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-26 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-25 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-24 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-23 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-22 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-21 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-20 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-19 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-18 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-17 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-16 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-15 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-14 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-13 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-12 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-11 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-10 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-09 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-08 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-07 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-06 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-05 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-04 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-03 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-02 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-07-01 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-30 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-29 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-28 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-27 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-26 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-25 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-24 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-23 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-22 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-21 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-20 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-19 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-18 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-17 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
| 2026-06-16 | 4.3 cfs (100%) | HARMONY DITCH 1, 1897-05-03 · South Platte River · on a river this source flows into |
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: 1533, of which 1533 sit on a river it flows into.
Legal record & documents
41 decreed actions on record across
10 court cases:
CA3286, CA1678, 88CW0263, 88CW0262, W7936, 93CW0140, 92CW0156, 88CW0228, 86CW0223, 86CW0222.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA3286 | 3 | 1953-03-24 | S |
CA1678 | 1 | 1913-05-22 | S |
88CW0263 | 4 | 1913-05-22 | O, S |
88CW0262 | 3 | 1913-05-22 | O, S |
W7936 | 13 | 1889-10-18 | O |
93CW0140 | 1 | 1889-10-18 | O |
92CW0156 | 8 | 1889-10-18 | O |
88CW0228 | 2 | 1889-10-18 | O |
86CW0223 | 4 | 1889-10-18 | O |
86CW0222 | 2 | 1889-10-18 | O |
202 imaged documents on DWR’s shelf for this structure — 57 water-court documents across 12 cases, including 11 decrees. Every row opens the scanned PDF at DWR. Listing as of 2026-09-17.
- Decree in case 08CW0285 ↗ · imaged 2010-06-29 · 42 pages
- Decree in case 92CW0156 ↗ · imaged 2006-09-25 · 25 pages
- Decree in case 93CW0140 ↗ · imaged 2006-09-25 · 16 pages
- Decree in case CA1678 ↗ · imaged 2006-09-05 · 197 pages
- Decree in case CA3286 ↗ · imaged 2006-09-05 · 172 pages
- Decree in case 85CW0110 ↗ · imaged 2005-08-24 · 28 pages
- Decree in case 86CW0222 ↗ · imaged 2005-08-24 · 24 pages
- Decree in case 86CW0223 ↗ · imaged 2005-08-24 · 15 pages
- Decree in case 88CW0228 ↗ · imaged 2005-08-24 · 23 pages
- Decree in case 88CW0263 ↗ · imaged 2005-08-24 · 24 pages
- Decree in case W7936 ↗ · imaged 2005-08-24 · 131 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 (57)
| Imaged | Case | Type | Pages | |
|---|---|---|---|---|
| 2025-07-10 | CA3286 |
TESTIMONY | 1229 | open ↗ |
| 2017-07-27 | 88CW0228 |
MAP | 1 | open ↗ |
| 2016-08-24 | 88CW0228 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2016-07-13 | W7936 |
APPLICATION | 8 | open ↗ |
| 2016-07-13 | W7936 |
MAP | 1 | open ↗ |
| 2012-08-28 | CA3286 |
TRANSFER WATER RIGHT (CHANGE OWNER, ADDRESS) | 3 | open ↗ |
| 2010-06-29 | 08CW0285 |
DECREE | 42 | open ↗ |
| 2010-06-22 | 08CW0285 |
ORDER (OTHER) | 2 | open ↗ |
| 2010-06-21 | 08CW0285 |
STIPULATION/SETTLEMENT | 77 | open ↗ |
| 2009-10-07 | 93CW0140 |
ORDER (OTHER) | 2 | open ↗ |
| 2009-10-07 | 93CW0140 |
RULE 26 DISCLOSURES | 27 | open ↗ |
| 2009-10-07 | 93CW0140 |
STATEMENT OF OPPOSITION | 24 | open ↗ |
| 2009-10-07 | 93CW0140 |
STIPULATION/SETTLEMENT | 17 | open ↗ |
| 2009-10-07 | 93CW0140 |
SUMMARY OF CONSULTATION | 3 | open ↗ |
| 2009-10-05 | 92CW0156 |
STATEMENT OF OPPOSITION | 17 | open ↗ |
| 2009-10-05 | 92CW0156 |
STIPULATION/SETTLEMENT | 2 | open ↗ |
| 2009-10-05 | 92CW0156 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2009-04-01 | 08CW0285 |
SUMMARY OF CONSULTATION | 2 | open ↗ |
| 2009-02-26 | 08CW0285 |
OTHER | 5 | open ↗ |
| 2009-02-25 | 08CW0285 |
OTHER | 3 | open ↗ |
| 2009-02-17 | 08CW0285 |
STATEMENT OF OPPOSITION | 4 | open ↗ |
| 2008-12-30 | 08CW0285 |
APPLICATION | 9 | open ↗ |
| 2006-10-06 | 93CW0140 |
APPLICATION | 9 | open ↗ |
| 2006-10-04 | 92CW0156 |
APPLICATION | 8 | open ↗ |
| 2006-09-25 | 92CW0156 |
DECREE | 25 | open ↗ |
| 2006-09-25 | 93CW0140 |
DECREE | 16 | open ↗ |
| 2006-09-05 | CA1678 |
DECREE | 197 | open ↗ |
| 2006-09-05 | CA3286 |
DECREE | 172 | open ↗ |
| 2005-11-18 | 88CW0228 |
MAP | 1 | open ↗ |
| 2005-08-24 | 85CW0110 |
APPLICATION | 8 | open ↗ |
| 2005-08-24 | 85CW0110 |
DECREE | 28 | open ↗ |
| 2005-08-24 | 85CW0110 |
OTHER | 2 | open ↗ |
| 2005-08-24 | 86CW0222 |
APPLICATION | 84 | open ↗ |
| 2005-08-24 | 86CW0222 |
DECREE | 24 | open ↗ |
| 2005-08-24 | 86CW0222 |
OTHER | 6 | open ↗ |
| 2005-08-24 | 86CW0222 |
OTHER | 8 | open ↗ |
| 2005-08-24 | 86CW0222 |
STIPULATION/SETTLEMENT | 25 | open ↗ |
| 2005-08-24 | 86CW0223 |
APPLICATION | 5 | open ↗ |
| 2005-08-24 | 86CW0223 |
DECREE | 15 | open ↗ |
| 2005-08-24 | 86CW0223 |
OTHER | 4 | open ↗ |
| 2005-08-24 | 86CW0223 |
STIPULATION/SETTLEMENT | 25 | open ↗ |
| 2005-08-24 | 88CW0228 |
APPLICATION | 8 | open ↗ |
| 2005-08-24 | 88CW0228 |
DECREE | 23 | open ↗ |
| 2005-08-24 | 88CW0228 |
OTHER | 4 | open ↗ |
| 2005-08-24 | 88CW0262 |
APPLICATION | 13 | open ↗ |
| 2005-08-24 | 88CW0262 |
OTHER | 5 | open ↗ |
| 2005-08-24 | 88CW0263 |
APPLICATION | 14 | open ↗ |
| 2005-08-24 | 88CW0263 |
DECREE | 24 | open ↗ |
| 2005-08-24 | 88CW0263 |
OTHER | 5 | open ↗ |
| 2005-08-24 | W7936 |
AFFIDAVIT | 9 | open ↗ |
| 2005-08-24 | W7936 |
APPLICATION | 21 | open ↗ |
| 2005-08-24 | W7936 |
DECREE | 131 | open ↗ |
| 2005-08-24 | W7936 |
ORDER (OTHER) | 6 | open ↗ |
| 2005-08-24 | W7936 |
OTHER | 2 | open ↗ |
| 2005-08-24 | W7936 |
OTHER | 6 | open ↗ |
| 2005-08-24 | W7936 |
OTHER | 10 | open ↗ |
| 2005-08-24 | W7936 |
STIPULATION/SETTLEMENT | 23 | open ↗ |
Division filings (140)
| Date | Type | Pages | |
|---|---|---|---|
| 2026-08-21 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2026_7_31_8/21/2026 11:32:53 AM | open ↗ | |
| 2026-07-16 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2026_6_30_7/16/2026 11:12:30 AM | open ↗ | |
| 2026-06-24 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2026_5_31_6/24/2026 10:17:01 AM | open ↗ | |
| 2026-05-15 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2026_4_30_5/15/2026 1:46:43 PM | open ↗ | |
| 2026-04-22 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2026_3_31_4/22/2026 9:43:24 AM | open ↗ | |
| 2026-03-18 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2026_2_28_3/18/2026 3:34:29 PM | open ↗ | |
| 2026-02-26 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2026_1_31_2/26/2026 3:50:33 PM | open ↗ | |
| 2026-01-21 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_12_31_1/21/2026 1:30:19 PM | open ↗ | |
| 2025-12-16 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_11_30_12/16/2025 2:22:48 PM | open ↗ | |
| 2025-11-21 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_10_31_11/21/2025 9:06:22 AM | open ↗ | |
| 2025-10-31 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_9_30_10/31/2025 10:47:59 AM | open ↗ | |
| 2025-09-19 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_8_31_9/19/2025 10:35:57 AM | open ↗ | |
| 2025-08-26 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_7_31_8/26/2025 2:03:47 PM | open ↗ | |
| 2025-07-25 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_6_30_7/25/2025 7:48:54 AM | open ↗ | |
| 2025-06-18 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_5_31_6/18/2025 9:47:40 AM | open ↗ | |
| 2025-05-20 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_4_30_5/20/2025 3:40:53 PM | open ↗ | |
| 2025-04-29 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_3_31_4/29/2025 1:37:36 PM | open ↗ | |
| 2025-03-25 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_2_28_3/25/2025 3:24:42 PM | open ↗ | |
| 2025-02-27 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2025_1_31_2/27/2025 2:54:54 PM | open ↗ | |
| 2025-01-28 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_12_31_1/28/2025 2:16:22 PM | open ↗ | |
| 2024-12-20 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_11_30_12/20/2024 11:12:22 AM | open ↗ | |
| 2024-11-26 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_10_31_11/26/2024 1:32:02 PM | open ↗ | |
| 2024-10-30 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_9_30_10/30/2024 9:23:40 AM | open ↗ | |
| 2024-09-23 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_8_31_9/23/2024 11:24:13 AM | open ↗ | |
| 2024-08-28 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_7_31_8/28/2024 9:07:24 AM | open ↗ | |
| 2024-07-26 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_6_30_7/26/2024 10:24:29 AM | open ↗ | |
| 2024-06-28 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_5_31_6/28/2024 1:30:20 PM | open ↗ | |
| 2024-05-23 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_4_30_5/23/2024 2:32:31 PM | open ↗ | |
| 2024-04-17 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_3_31_4/17/2024 7:45:19 AM | open ↗ | |
| 2024-03-29 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_2_28_3/29/2024 9:58:40 AM | open ↗ | |
| 2024-02-29 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2024_1_31_2/29/2024 1:49:17 PM | open ↗ | |
| 2024-01-30 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_12_31_1/30/2024 9:00:21 AM | open ↗ | |
| 2023-12-29 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_11_30_12/29/2023 11:06:51 AM | open ↗ | |
| 2023-11-29 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_10_31_11/29/2023 11:32:23 AM | open ↗ | |
| 2023-10-25 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_9_30_10/25/2023 10:33:51 AM | open ↗ | |
| 2023-09-28 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_8_31_9/28/2023 1:58:09 PM | open ↗ | |
| 2023-08-30 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_7_31_8/30/2023 3:18:29 PM | open ↗ | |
| 2023-07-28 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_6_30_7/28/2023 2:57:02 PM | open ↗ | |
| 2023-06-27 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_5_31_6/27/2023 1:40:56 PM | open ↗ | |
| 2023-05-24 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_4_30_5/24/2023 1:33:29 PM | open ↗ | |
| 2023-04-28 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_3_31_4/28/2023 8:12:40 AM | open ↗ | |
| 2023-03-30 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_2_28_3/30/2023 9:25:38 AM | open ↗ | |
| 2023-02-22 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2023_1_31_2/22/2023 9:28:51 AM | open ↗ | |
| 2023-01-26 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_12_31_1/26/2023 1:29:48 PM | open ↗ | |
| 2022-12-22 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_11_30_12/22/2022 11:26:26 AM | open ↗ | |
| 2022-11-29 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_10_31_11/29/2022 11:51:51 AM | open ↗ | |
| 2022-10-27 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_9_30_10/27/2022 11:19:05 AM | open ↗ | |
| 2022-09-23 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_8_31_9/23/2022 2:02:33 PM | open ↗ | |
| 2022-08-26 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_7_31_8/26/2022 3:10:37 PM | open ↗ | |
| 2022-07-22 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_6_30_7/22/2022 2:29:58 PM | open ↗ | |
| 2022-06-22 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_5_31_6/22/2022 3:21:34 PM | open ↗ | |
| 2022-05-31 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_3_31_5/31/2022 7:35:43 AM | open ↗ | |
| 2022-05-31 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_4_30_5/31/2022 7:36:04 AM | open ↗ | |
| 2022-03-29 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_2_28_3/29/2022 8:12:09 AM | open ↗ | |
| 2022-02-23 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2022_1_31_2/23/2022 10:02:58 AM | open ↗ | |
| 2022-02-01 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2021_12_31_2/1/2022 6:53:51 AM | open ↗ | |
| 2021-12-30 | Accounting & Spreadsheets AURORA JEFFERSON LAKE_2021_11_30_12/30/2021 10:36:05 AM | open ↗ | |
| 2015-11-04 | Accounting & Spreadsheets JEFFERSON LAKE RES WY 2015 | 14 | open ↗ |
| 2011-11-28 | Accounting & Spreadsheets AURORA, JEFFERSON LAKE WY 2011 | 3 | open ↗ |
| 2011-03-04 | Correspondence JANITELL AURORA TRANS ASSUMPTIONS FOR DETERMINING TRANSFERABLE WATER W-7936 | 2 | open ↗ |
| 2010-11-24 | Accounting & Spreadsheets AURORA, JEFFERSON LAKE WY 2010 | 3 | open ↗ |
| 2009-11-04 | Accounting & Spreadsheets AURORA, JEFFERSON LAKE WY 2009 | open ↗ | |
| 2008-11-14 | Accounting & Spreadsheets AURORA, JEFFERSON LAKE WY 2008 | open ↗ | |
| 2005-12-22 | Accounting & Spreadsheets AURORA, JEFFERSON LAKE WY 2005 | open ↗ | |
| 2004-02-02 | Correspondence AURORA INTEGRATED WATER DEVELOPMENT PLANNING LOWER SOUTH PLATTE... | 21 | open ↗ |
| 2004-02-02 | Correspondence AURORA INTEGRATED WATER DEVELOPMENT PLANNING LOWER SOUTH PLATTE... | 21 | open ↗ |
| 2003-02-20 | Correspondence AURORA PURCHASE OF WATER RIGHTS RESPONSE LETTER (MARCH 13, 2002) | 1 | open ↗ |
| 2003-02-20 | Correspondence AURORA PURCHASE OF WATER RIGHTS RESPONSE LETTER (MARCH 13, 2002) | 1 | open ↗ |
| 2003-02-20 | Correspondence AURORA, CITY OF PURCHASE OF WATER RIGHTS RESPONSE LETTER (MARCH 13, 2002) | 3 | open ↗ |
| 2003-02-20 | Correspondence AURORA, CITY OF PURCHASE OF WATER RIGHTS RESPONSE LETTER (MARCH 13, 2002) | 3 | open ↗ |
| 2003-02-20 | Correspondence AURORA, CITY OF PURCHASE OF WATER RIGHTS RESPONSE LETTER (MARCH 13, 2002) | 3 | open ↗ |
| 2003-02-20 | Correspondence AURORA, CITY OF PURCHASE OF WATER RIGHTS RESPONSE LETTER (MARCH 13, 2002) | 3 | open ↗ |
| 2003-02-20 | Correspondence AURORA, CITY OF PURCHASE OF WATER RIGHTS RESPONSE LETTER (MARCH 13, 2002) | 3 | open ↗ |
| 2002-03-13 | Correspondence AURORA PURCHASE OF WATER RIGHTS FROM THORNTON W-8345, W-9242,... | 2 | open ↗ |
| 2002-03-13 | Correspondence AURORA PURCHASE OF WATER RIGHTS FROM THORNTON W-8345, W-9242,... | 2 | open ↗ |
| 1996-08-29 | Correspondence AURORA COMPLIANCE 91CW156 AND 93CW140 | 4 | open ↗ |
| 1996-07-31 | Correspondence TARRYALL WATER RIGHTS REVISED AGREEMENT FOR CITY OF THORNTON AND... | 5 | open ↗ |
| 1996-07-31 | Correspondence TARRYALL WATER RIGHTS REVISED AGREEMENT FOR CITY OF THORNTON AND... | 5 | open ↗ |
| 1996-07-31 | Correspondence TARRYALL WATER RIGHTS REVISED AGREEMENT FOR CITY OF THORNTON AND... | 5 | open ↗ |
| 1996-07-31 | Correspondence TARRYALL WATER RIGHTS REVISED AGREEMENT FOR CITY OF THORNTON AND... | 5 | open ↗ |
| 1996-07-31 | Correspondence TARRYALL WATER RIGHTS REVISED AGREEMENT FOR CITY OF THORNTON AND... | 5 | open ↗ |
| 1996-07-30 | Correspondence AURORA DRYUP LANDS SUBJECT OF 92CW156 AND 93CW140 | 3 | open ↗ |
| 1991-02-05 | Correspondence JANITELL AURORA TRANS SAMPLE ACCOUNTING INFORMATION | 5 | open ↗ |
| 1989-12-31 | Correspondence JANITELL AURORA TRANS PROPOSED TRANSFERABLE CONSUMPTIVE, DAILY... | 2 | open ↗ |
| 1986-09-02 | Correspondence JEFFERSON LAKE RESERVOIR AUG 1976 | 2 | open ↗ |
| 1983-09-26 | Correspondence JANITELL AURORA TRANS APPLICATION W-7936 | 1 | open ↗ |
| 1983-09-22 | Correspondence JANITELL AURORA TRANS APPLICATION CASE NO W-7936 | 4 | open ↗ |
| 1983-05-31 | Correspondence JEFFERSON LAKE RESERVOIR RESPONSE LETTER (MAY 20, 1983) | 1 | open ↗ |
| 1983-05-20 | Correspondence JEFFERSON LAKE RESERVOIR FOLLOW-UP OF TELEPHONE CONVERSATION (MAY 20, 1983) | 1 | open ↗ |
| 1982-10-29 | Correspondence AURORA REQUEST OF PARTICIPATION IN PLANNED MEETING | 2 | open ↗ |
| 1982-06-07 | Correspondence JANITELL AURORA TRANS BEAVERS FLOODING MEADOWS | 1 | open ↗ |
| 1982-05-24 | Correspondence JANITELL AURORA TRANS RESPONSE LETTER (MAY 10, 1982) | 7 | open ↗ |
| 1982-03-25 | Correspondence JANITELL AURORA TRANS FLOW STATION ON MICHIGAN CREEK | 1 | open ↗ |
| 1980-10-03 | Field Forms JEFFERSON LAKE RESERVOIR SEP 1980 | 1 | open ↗ |
| 1980-08-31 | Field Forms JEFFERSON LAKE RESERVOIR AUG 1980 | 1 | open ↗ |
| 1980-08-19 | Field Forms JEFFERSON LAKE RESERVOIR JUL 1980 | 1 | open ↗ |
| 1979-12-31 | Correspondence JANITELL AURORA TRANSFER 1979 | 1 | open ↗ |
| 1977-08-08 | Correspondence JANITELL AURORA TRANS TRIAL BRIEF OCTOBER 8, 1977 | 1 | open ↗ |
| 1977-07-31 | Field Forms JEFFERSON LAKE RESERVOIR JUL 1977 | 1 | open ↗ |
| 1977-07-21 | Correspondence JANITELL AURORA TRANS W-7936 HEARING HELD ON SEPTEMBER 8, 1977 | 1 | open ↗ |
| 1977-07-14 | Correspondence JANITELL AURORA TRANS RESPONSE LETTER (JULY 7, 1977) | 2 | open ↗ |
| 1977-06-30 | Field Forms JEFFERSON LAKE RESERVOIR JUN 1977 | 1 | open ↗ |
| 1977-06-23 | Correspondence JANITELL AURORA TRANS RESPONSE LETTER (JUNE 20, 1977) | 2 | open ↗ |
| 1976-12-28 | Correspondence JANITELL AURORA TRANS PROPOSED DECREE (DECEMBER 17, 1976) | 1 | open ↗ |
| 1976-11-05 | Correspondence JEFFERSON LAKE RESERVOIR OCT 1976- REVISED | 2 | open ↗ |
| 1976-10-31 | Field Forms JEFFERSON LAKE RESERVOIR OCT 1976 | 1 | open ↗ |
| 1976-10-05 | Correspondence JEFFERSON LAKE RESERVOIR SEP 1976 | 2 | open ↗ |
| 1976-09-30 | Correspondence JEFFERSON LAKE RESERVOIR STAFF GAUGE | 1 | open ↗ |
| 1976-09-23 | Correspondence JEFFERSON LAKE RESERVOIR COMPLETEION OF STAFF GAGE | 1 | open ↗ |
| 1976-09-14 | Correspondence JEFFERSON LAKE RESERVOIR STAFF GUAGE INSTALLATION | 1 | open ↗ |
| 1976-08-23 | Correspondence JEFFERSON LAKE RESERVOIR JUL 1976- CORRECTED | 2 | open ↗ |
| 1976-08-03 | Correspondence JEFFERSON LAKE RESERVOIR REPORT | 2 | open ↗ |
| 1975-09-01 | Correspondence AURORA, CITY OF PRLIMINARY EVALUATION OF PLAN FOR AUGMENTATION... | 4 | open ↗ |
| 1975-08-29 | Correspondence JEFFERSON LAKE RESERVOIR MEASUREMENTS (AUGUST 27, 1975) | 1 | open ↗ |
| 1975-06-27 | Correspondence JEFFERSON LAKE RESERVOIR TRANSPORTATION CHARGES ON RESERVOIR RELEASES | 4 | open ↗ |
| 1975-06-09 | Correspondence JANITELL AURORA TRANS W-7931 & W-7936 OBJECTED APPLICATIONS | 2 | open ↗ |
| 1975-02-10 | Correspondence JEFFERSON LAKE RESERVOIR RESPONSE TO PHONE MESSAGE | 1 | open ↗ |
| 1974-11-22 | Correspondence JEFFERSON LAKE RESERVOIR STAFF GUAGE | 1 | open ↗ |
| 1973-07-19 | Correspondence JEFFERSON LAKE RESERVOIR FOLLOW-UP LETTER REGARDING MEETING (JULY 14, 1973) | 1 | open ↗ |
| 1973-07-14 | Correspondence JEFFERSON LAKE RESERVOIR MINUTES OF THE ANNUAL MEETING | 7 | open ↗ |
| 1973-07-06 | Correspondence JEFFERSON LAKE RESERVOIR OPERATION | 3 | open ↗ |
| 1973-06-11 | Correspondence JEFFERSON LAKE RESERVOIR CONFIRMATION OF CONVERSATION WITH RALPH... | 1 | open ↗ |
| 1973-05-24 | Correspondence JEFFERSON LAKE RESERVOIR EXTENSION OF TIME | 1 | open ↗ |
| 1973-05-07 | Correspondence JEFFERSON LAKE RESERVOIR CONDITION OF DAM | 1 | open ↗ |
| 1972-06-28 | Correspondence JEFFERSON LAKE RESERVOIR INSPECTION REPORTS AND RECOMENDATIONS | 5 | open ↗ |
| 1972-06-22 | Correspondence JEFFERSON LAKE RESERVOIR RESPONSE TO NOTICE OF STOCKHOLDERS MEETING LETTER | 3 | open ↗ |
| 1971-10-26 | Correspondence JEFFERSON LAKE RESERVOIR KENOSHA DITCH | 1 | open ↗ |
| 1971-07-27 | Correspondence JEFFERSON LAKE RESERVOIR RESPONSE LETTER (JULY 23, 1971) | 1 | open ↗ |
| 1971-07-23 | Correspondence JEFFERSON LAKE RESERVOIR RETURNED LETTER | 2 | open ↗ |
| 1971-06-30 | Correspondence JEFFERSON LAKE RESERVOIR RECOMENDATIONS FOR MEETING | 2 | open ↗ |
| 1970-12-22 | Correspondence JEFFERSON LAKE RESERVOIR ANNUAL REPORT | 19 | open ↗ |
| 1970-08-19 | Correspondence JEFFERSON LAKE RESERVOIR RESPONSE LETTER (JANUARY 9, 1970) | 2 | open ↗ |
| 1970-02-06 | Correspondence JEFFERSON LAKE RESERVOIR RESPONSE LETTER (JANUARY 29, 1970) | 1 | open ↗ |
| 1970-01-29 | Correspondence JEFFERSON LAKE RESERVOIR RESPONSE LETTER (JANUARY 23, 1970) | 2 | open ↗ |
| 1970-01-23 | Correspondence JEFFERSON LAKE RESERVOIR RESPONSE LETTER (JANUARY 9, 1970 AND... | 3 | open ↗ |
| 1970-01-23 | Correspondence JEFFERSON LAKE RESERVOIR 1969 DIVERSIONS | 3 | open ↗ |
| 1970-01-16 | Correspondence JEFFERSON LAKE RESERVOIR TABULATIONS | 2 | open ↗ |
| 1970-01-09 | Correspondence JEFFERSON LAKE RESERVOIR 1969 DIVERSIONS | 2 | open ↗ |
| 1969-10-15 | Correspondence JEFFERSON LAKE RESERVOIR INSTALLATION OF GAUGE ROD | 2 | open ↗ |
| 1900-08-31 | Correspondence JEFFERSON LAKE RESERVOIR AUG | 1 | open ↗ |
Maps (5)
| Date | Title | Pages | |
|---|---|---|---|
| 2006-01-11 | JEFFERSON LAKE RESERVOIR | 1 | open ↗ |
| 2006-01-11 | JEFFERSON LAKE RESERVOIR (ENLARGEMENT) | 1 | open ↗ |
| 2006-01-11 | JEFFERSON LAKE RESERVOIR (ENLARGEMENT) | 1 | open ↗ |
| 2006-01-11 | JEFFERSON LAKE RESERVOIR (PRELIMINARY) | 1 | open ↗ |
| 2006-01-11 | JEFFERSON LAKE RESERVOIR ENL. (PRELIM-AMENDMENT) | 1 | 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 2303981 ↗ (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 →
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.
9040.00000 · peaks at
9 of 11 seasons
11458.00000 · peaks at
9 of 11 seasons
29219.00000 · peaks at
10 of 11 seasons
Snow sets the clock here. In the driest third of snow years (3 seasons), 2 seasons stayed under call throughout and 0 ended free. In the middle third (5 seasons), the call settled in for the season around June 24 (April 29 to July 8 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 July 8 (June 3 to July 8 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 3 court cases that also touched 20 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.
| Case | Filed | Also touched |
|---|---|---|
93CW0140
⚠ abandonment |
1993 | AURORA INTAKE, STRONTIA SPRINGS DIVERSION DAM, TWO FORKS RES, BRUBAKER DITCH and 6 more |
88CW0228
⚠ abandonment |
1988 | BURLINGTON D RIVER HEADGATE, TANI LAKES COMBINED, AURORA INTAKE, STRONTIA SPRINGS DIVERSION DAM and 7 more |
86CW0222
⚠ abandonment |
1986 | BURLINGTON D RIVER HEADGATE, 0208828, DENVER CONDUIT NO 20, CHATFIELD RESERVOIR and 7 more |
Also a party to 7 omnibus
adjudications
(CA3286, 317 structures; CA1678, 151 structures; W7936, 29 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 3,317 AF. Its most recent year on record, 2025, came in at 2,099 AF — 63% of that, and 2nd 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 | 3,343 | 9th lowest of 15 · 101% of median | 3,759 | 294 | 37.3 |
| 2012 | 392 | 1st lowest of 15 · 12% of median | 2,623 | 164 | 2.3 |
| 2013 | 2,626 | 4th lowest of 15 · 79% of median | 165 | 316 | 22.6 |
| 2014 | 3,247 | 7th lowest of 15 · 98% of median | 1,085 | 345 | 46.4 |
| 2015 | 3,317 | 8th lowest of 15 · 100% of median | 1,968 | 357 | 30.5 |
| 2016 | 4,381 | 14th lowest of 15 · 132% of median | 2,128 | 316 | 32.6 |
| 2017 | 3,054 | 6th lowest of 15 · 92% of median | 1,103 | 360 | 32.9 |
| 2018 | 2,166 | 3rd lowest of 15 · 65% of median | 444 | 364 | 15.6 |
| 2019 | 3,523 | 13th lowest of 15 · 106% of median | 2,695 | 331 | 35.9 |
| 2020 | 3,400 | 11th lowest of 15 · 102% of median | 316 | 359 | 83.3 |
| 2021 | 3,522 | 12th lowest of 15 · 106% of median | 795 | 365 | 20.3 |
| 2022 | 2,840 | 5th lowest of 15 · 86% of median | 794 | 346 | 16.6 |
| 2023 | 3,388 | 10th lowest of 15 · 102% of median | 1,395 | 353 | 18.2 |
| 2024 | 5,576 | 15th lowest of 15 · 168% of median | 616 | 366 | 63.5 |
| 2025 | 2,099 | 2nd lowest of 15 · 63% of median | 691 | 249 | 25.0 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
How good is our record of it?
Grade A (9/10 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 | 26 right(s), seniority decoded |
| diversion record | present | 9337 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 90% of the irrigation seasons in 1977-2025 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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