Hydrohistorian
← My Water · Print / save as PDF
NUMBER ONE DITCH
Structure dossier · WDID 4500708 · 1 · DRY CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:17 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (2deb1d7) — every figure regenerates from this named code version and data image.
Where it sits in line
Priority 1901-05-01 — 131st most senior of the 1378 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: RODERICK DITCH (1894-04-01). Immediately behind: COAL RIDGE PUMP AND PL (1907-04-01).
Decreed rights (3)
| 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 |
|---|---|---|---|---|---|---|---|
| 20800.18748 | 1901-05-01 | 1907-04-29 | 0.6 | 0.0 | C | IRRDOM | 122AA |
| 22232.2094 | 1907-05-02 | 1910-11-23 | 2.0 | 0.0 | C | IRR | 142A |
| 23703.2094 | 1907-05-02 | 1914-11-25 | 1.26 | 0.0 | C | IRR | 142A |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 35 AF. Its most recent year on record, 2024, came in at 93 AF — 266% of that, and 12th lowest of the 15 years with a recorded volume.
| 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 | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 2010 | 54 | 10th lowest of 15 · 154% of median | 35 | 1.5 |
| 2011 | 198 | 15th lowest of 15 · 566% of median | 51 | 2.6 |
| 2012 | 103 | 13th lowest of 15 · 294% of median | 35 | 2.9 |
| 2013 | 16 | 4th lowest of 15 · 46% of median | 19 | 1.1 |
| 2014 | 51 | 9th lowest of 15 · 146% of median | 33 | 1.7 |
| 2015 | 35 | 8th lowest of 15 · 100% of median | 38 | 0.9 |
| 2016 | 15 | 3rd lowest of 15 · 43% of median | 17 | 0.6 |
| 2017 | 70 | 11th lowest of 15 · 200% of median | 38 | 1.5 |
| 2018 | 30 | 6th lowest of 15 · 86% of median | 28 | 0.6 |
| 2019 | 120 | 14th lowest of 15 · 343% of median | 67 | 1.6 |
| 2020 | 32 | 7th lowest of 15 · 91% of median | 25 | 1.0 |
| 2021 | 13 | 2nd lowest of 15 · 37% of median | 18 | 0.6 |
| 2022 | 24 | 5th lowest of 15 · 69% of median | 20 | 0.7 |
| 2023 | 0 | 1st lowest of 15 · 0% of median | 3 | 0.0 |
| 2024 | 93 | 12th lowest of 15 · 266% of median | 43 | 1.2 |
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.