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JOHN ERPS DITCH NO 3
Structure dossier · WDID 1300607 · 1 · GRAPE CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:16 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 1884-06-03 — 404th most senior of the 1017 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: H LOHSTROH DITCH NO 1 (1884-06-01). Immediately behind: JOHN ERPS DITCH NO 4 (1884-06-04).
Decreed rights (1)
| 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 |
|---|---|---|---|---|---|---|---|
| 12573.0 | 1884-06-03 | 1896-03-12 | 1.06 | 0.0 | C | IRR | 374 |
Recorded use (last 13 years on record)
In a median year this structure has a recorded diversion of 5 AF. Its most recent year on record, 2024, came in at 22 AF — 440% of that, and 9th lowest of the 13 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) |
|---|---|---|---|---|
| 1996 | 0 | 1st lowest of 13 · 0% of median | 1 | 0.0 |
| 1997 | 42 | 12th lowest of 13 · 840% of median | 22 | 1.0 |
| 2009 | 5 | 7th lowest of 13 · 100% of median | 30 | 0.1 |
| 2010 | 34 | 10th lowest of 13 · 680% of median | 43 | 0.4 |
| 2014 | 36 | 11th lowest of 13 · 720% of median | 38 | 0.5 |
| 2015 | 11 | 8th lowest of 13 · 220% of median | 15 | 0.5 |
| 2016 | 1 | 4th lowest of 13 · 20% of median | 6 | 0.2 |
| 2017 | 202 | 13th lowest of 13 · 4040% of median | 103 | 1.0 |
| 2018 | 1 | 4th lowest of 13 · 20% of median | 2 | 0.4 |
| 2019 | 0 | 1st lowest of 13 · 0% of median | 1 | 0.0 |
| 2020 | 0 | 1st lowest of 13 · 0% of median | 1 | 0.0 |
| 2021 | 1 | 4th lowest of 13 · 20% of median | 2 | 0.3 |
| 2024 | 22 | 9th lowest of 13 · 440% of median | 12 | 1.0 |
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.