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EAST RIVER NO 2 DITCH
Structure dossier · WDID 5900550 · 1 · EAST RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:11 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
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: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it.
Where it sits in line
Priority 1897-09-15 — 204th most senior of the 2360 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: RAINBOW LAKE RESERVOIR (1897-07-21). Immediately behind: DIETRICH SPRING #1 (1897-09-15).
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 |
|---|---|---|---|---|---|---|---|
| 17425.0 | 1897-09-15 | 1906-09-14 | 12.0 | 0.0 | C | IRR | 119 |
| 27585.1254 | 1884-05-01 | 1941-04-21 | 10.27 | 0.0 | C | IRR | 195 |
| 30667.17425 | 1897-09-15 | 1941-04-29 | 27.1 | 0.0 | C | IRR | 366 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 7,613 AF. Its most recent year on record, 2025, came in at 5,060 AF — 66% of that, and 1st 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) |
|---|---|---|---|---|
| 2011 | 8,383 | 12th lowest of 15 · 110% of median | 159 | 46.9 |
| 2012 | 7,916 | 10th lowest of 15 · 104% of median | 130 | 57.2 |
| 2013 | 10,649 | 15th lowest of 15 · 140% of median | 175 | 54.0 |
| 2014 | 7,613 | 8th lowest of 15 · 100% of median | 171 | 40.1 |
| 2015 | 7,768 | 9th lowest of 15 · 102% of median | 152 | 34.9 |
| 2016 | 8,979 | 13th lowest of 15 · 118% of median | 165 | 40.6 |
| 2017 | 8,159 | 11th lowest of 15 · 107% of median | 160 | 43.4 |
| 2018 | 5,659 | 3rd lowest of 15 · 74% of median | 181 | 42.2 |
| 2019 | 6,319 | 6th lowest of 15 · 83% of median | 148 | 44.3 |
| 2020 | 6,714 | 7th lowest of 15 · 88% of median | 177 | 46.4 |
| 2021 | 5,791 | 4th lowest of 15 · 76% of median | 199 | 42.2 |
| 2022 | 9,889 | 14th lowest of 15 · 130% of median | 185 | 42.2 |
| 2023 | 5,852 | 5th lowest of 15 · 77% of median | 161 | 36.1 |
| 2024 | 5,342 | 2nd lowest of 15 · 70% of median | 161 | 25.0 |
| 2025 | 5,060 | 1st lowest of 15 · 66% of median | 177 | 40.1 |
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.