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BOULDER CR MIN FLOW C
Structure dossier · WDID 0602100 · MINIMUM FLOW · BOULDER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:52 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (e70d0b5) — every figure regenerates from this named code version and data image.
Where it sits in line
Priority 1859-11-15 — 23rd 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: BOULDER PL 3 AT BARKER R (1859-11-15). Immediately behind: 0602124 (1859-11-15).
Decreed rights (6)
| 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 |
|---|---|---|---|---|---|---|---|
| 3606.0 | 1859-11-15 | 1882-06-02 | 0.0 | 0.0 | C | MIN | |
| 3927.0 | 1860-10-01 | 1882-06-02 | 0.0 | 0.0 | C | MIN | |
| 4535.0 | 1862-06-01 | 1882-06-02 | 1.0 | 0.0 | C | MIN | |
| 4657.0 | 1862-10-01 | 1882-06-02 | 0.0 | 0.0 | C | MIN | |
| 19762.0 | 1904-02-09 | 1909-11-03 | 0.0 | 0.0 | C | MIN | |
| 45290.45199 | 1973-10-01 | 1974-12-31 | 15.0 | 0.0 | C | MIN |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 9,001 AF. Its most recent year on record, 2025, came in at 22,563 AF — 251% of that, and 14th 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 | 8,306 | 6th lowest of 15 · 92% of median | — | 365 | 15.0 |
| 2012 | 7,024 | 3rd lowest of 15 · 78% of median | — | 366 | 15.0 |
| 2013 | 7,656 | 4th lowest of 15 · 85% of median | — | 365 | 15.0 |
| 2014 | 10,769 | 13th lowest of 15 · 120% of median | — | 365 | 15.0 |
| 2015 | 9,070 | 9th lowest of 15 · 101% of median | — | 365 | 15.0 |
| 2016 | 9,086 | 10th lowest of 15 · 101% of median | — | 366 | 16.5 |
| 2017 | 9,158 | 11th lowest of 15 · 102% of median | — | 365 | 15.0 |
| 2018 | 7,766 | 5th lowest of 15 · 86% of median | — | 365 | 15.0 |
| 2019 | 9,001 | 8th lowest of 15 · 100% of median | — | 365 | 16.5 |
| 2020 | 9,552 | 12th lowest of 15 · 106% of median | — | 366 | 25.6 |
| 2021 | 8,367 | 7th lowest of 15 · 93% of median | — | 365 | 29.0 |
| 2022 | 1,203 | 1st lowest of 15 · 13% of median | — | 179 | 18.3 |
| 2023 | 43,121 | 15th lowest of 15 · 479% of median | — | 304 | 612.0 |
| 2024 | 1,423 | 2nd lowest of 15 · 16% of median | — | 61 | 23.7 |
| 2025 | 22,563 | 14th lowest of 15 · 251% of median | — | 304 | 458.0 |
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.