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LOWER BOULDER DITCH
Structure dossier · WDID 0600538 · DITCH · BOULDER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:45 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (96d5528) — every figure regenerates from this named code version and data image.
Where it sits
Location as DWR records it. Faint dots are the neighbouring water; click any to open it.
Which of its rights are out of priority?
Not computable for this structure: no administrative call record for this basin.
Where it sits in line
Priority 1859-10-01 — 1st 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 behind: COMMUNITY DITCH (1859-10-01).
On MAINSTEM at river mile 19.9, it is 34th of 78 down the reach. Immediately upstream: KUGELER PIPELINE 1. Immediately downstream: BULL HEAD GULCH P L.
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 (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. | Units | UsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 3561.0 | 1859-10-01 | 1882-06-02 | 24.981 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGOTH | |
| 4869.0 | 1863-05-01 | 1882-06-02 | 2.604 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGOTHWLD | |
| 5511.0 | 1865-02-01 | 1882-06-02 | 3.872 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGOTHWLD | |
| 5570.0 | 1865-04-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMOTHWLD | |
| 5935.0 | 1866-04-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMOTHWLD | |
| 5979.0 | 1866-05-15 | 1882-06-02 | 2.66 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGOTHWLD | |
| 5996.0 | 1866-06-01 | 1882-06-02 | 1.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGOTHWLD | |
| 7457.0 | 1870-06-01 | 1882-06-02 | 96.972 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGOTH | |
| 7579.0 | 1870-10-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMOTHWLD | |
| 8141.0 | 1872-04-15 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNRECFISDOMOTHWLD | |
| 8553.0 | 1873-06-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNRECFISDOMOTHWLD | |
| 11567.0 | 1881-09-01 | 1907-03-13 | 0.0 | 0.0 | C | IRRMUNRECFISDOMWLD | |
| 12724.0 | 1884-11-01 | 1907-03-13 | 0.0 | 0.0 | C | IRRMUNRECFISDOMWLD | |
| 15386.0 | 1892-02-15 | 1907-03-13 | 0.0 | 0.0 | C | IRRMUNRECFISDOMWLD | |
| 17441.0 | 1897-10-01 | 1907-03-13 | 0.0 | 0.0 | C | IRRMUNRECFISDOMWLD | |
| 20188.15372 | 1892-02-01 | 1907-03-13 | 71.68 | 0.0 | C | STO | |
| 20890.20624 | 1906-06-20 | 1907-11-03 | 0.0 | 0.0 | C | IRRMUNRECFISDOMWLD | |
| 22019.0 | 1910-04-15 | 1935-01-09 | 120.0 | 0.0 | C | STO | |
| 27930.23981 | 1915-08-29 | 1953-09-28 | 0.0 | 0.0 | C | IRRMUNRECFISDOMWLD | |
| 47481.47175 | 1979-02-28 | 1980-12-31 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMOTH | |
| 47847.0 | 1980-12-31 | 1980-12-31 | 0.0 | 8.0 | C | IRRMUNCOMRECFISDOMAUGOTHWLD | |
| 49330.0 | 1985-01-22 | 1985-12-31 | 27.62 | 22.38 | C | STO | |
| 51269.0 | 1990-05-15 | 1990-12-31 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGWLD | |
| 53325.48264 | 1982-02-21 | 1996-12-31 | 0.0 | 2.0 | C | STO | |
| 53872.0 | 1997-06-30 | 1997-12-31 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGWLD | |
| 58825.0 | 2011-01-21 | 2011-12-31 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGWLD |
Legal record & documents
97 decreed actions on record across
25 court cases:
05CW0295, 97CW0195, 96CW1101, 90CW0108, 97CW0140, 85CW0406, 99CW0191, 93CW0025, 79CW0387, 02CW0281 and 15 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
05CW0295 | 1 | 2011-12-31 | S |
97CW0195 | 5 | 1997-12-31 | O, S |
96CW1101 | 1 | 1996-12-31 | S |
90CW0108 | 13 | 1990-12-31 | O, S |
97CW0140 | 1 | 1985-12-31 | S |
85CW0406 | 1 | 1985-12-31 | S |
99CW0191 | 1 | 1980-12-31 | S |
93CW0025 | 1 | 1980-12-31 | S |
79CW0387 | 4 | 1980-12-31 | S |
02CW0281 | 1 | 1980-12-31 | S |
85CW0119 | 11 | 1953-09-28 | O, S |
CA6672 | 2 | 1935-01-09 | S |
CA4842 | 1 | 1907-03-13 | S |
W8348 | 2 | 1882-06-02 | O |
W8347 | 1 | 1882-06-02 | O |
W8346 | 2 | 1882-06-02 | O |
CA6524 | 2 | 1882-06-02 | O |
CA1300 | 2 | 1882-06-02 | O |
CA10000 | 2 | 1882-06-02 | O |
94CW0284 | 4 | 1882-06-02 | O |
84CW0309 | 2 | 1882-06-02 | O |
80CW0468 | 15 | 1882-06-02 | O |
80CW0451 | 12 | 1882-06-02 | O |
19CW3236 | 6 | 1882-06-02 | O |
16CW3069 | 4 | 1882-06-02 | O |
DWR's own records for this structure: net amounts · transactions & adjudication history · scanned decrees (search a case number there for the imaged document). On this site: the district's full legal picture →
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 14,950 AF. Its most recent year on record, 2025, came in at 17,538 AF — 117% of that, and 12th 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) |
|---|---|---|---|---|---|
| 2010 | 16,816 | 10th lowest of 15 · 112% of median | — | 202 | 125.0 |
| 2011 | 19,546 | 14th lowest of 15 · 131% of median | — | 209 | 109.1 |
| 2012 | 23,843 | 15th lowest of 15 · 160% of median | — | 199 | 145.0 |
| 2013 | 13,702 | 5th lowest of 15 · 92% of median | — | 163 | 85.4 |
| 2014 | 15,140 | 9th lowest of 15 · 101% of median | — | 191 | 77.1 |
| 2015 | 12,931 | 4th lowest of 15 · 86% of median | — | 187 | 63.8 |
| 2016 | 12,105 | 3rd lowest of 15 · 81% of median | — | 184 | 62.0 |
| 2017 | 14,139 | 6th lowest of 15 · 95% of median | — | 198 | 69.9 |
| 2018 | 16,949 | 11th lowest of 15 · 113% of median | — | 197 | 113.5 |
| 2019 | 14,502 | 7th lowest of 15 · 97% of median | — | 186 | 114.6 |
| 2020 | 18,289 | 13th lowest of 15 · 122% of median | — | 190 | 169.1 |
| 2021 | 2,303 | 2nd lowest of 15 · 15% of median | — | 96 | 23.2 |
| 2023 | 448 | 1st lowest of 15 · 3% of median | — | 38 | 10.0 |
| 2024 | 14,950 | 8th lowest of 15 · 100% of median | — | 208 | 66.4 |
| 2025 | 17,538 | 12th lowest of 15 · 117% of median | — | 199 | 107.9 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
Its reference gage, LOWER BOULDER DITCH: 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 | 26 right(s), seniority decoded |
| diversion record | current | 12544 measured days, newest 294 day(s) before the data's end (DWR publishes ~1 year in arrears) |
| record continuity | continuous | 78% of the irrigation seasons in 1950-2025 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.