Hydrohistorian
← My Water · Print / save as PDF
ELMER MARSHALL NO1 DITCH
Structure dossier · WDID 5900553 · 1 · GUNNISON RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 19:53 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 1893-06-01 — 169th 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: GARDEN DITCH (1893-04-01). Immediately behind: ELMER MARSHALL NO2 DITCH (1893-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 15858.0 | 1893-06-01 | 1906-09-14 | 1.625 | 0.0 | C | IRR | 98 |
| 30667.15858 | 1893-06-01 | 1941-04-29 | 4.875 | 0.0 | C | IRR | 353 |
| 30667.20939 | 1907-05-01 | 1941-04-29 | 1.5 | 0.0 | C | IRR | 408 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 265 AF. Its most recent year on record, 2025, came in at 406 AF — 153% of that, and 13th 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 | 344 | 11th lowest of 15 · 130% of median | 91 | 2.3 |
| 2012 | 1,068 | 15th lowest of 15 · 403% of median | 124 | 7.6 |
| 2013 | 629 | 14th lowest of 15 · 237% of median | 103 | 4.9 |
| 2014 | 370 | 12th lowest of 15 · 140% of median | 88 | 3.8 |
| 2015 | 147 | 2nd lowest of 15 · 56% of median | 131 | 1.8 |
| 2016 | 293 | 10th lowest of 15 · 111% of median | 69 | 4.4 |
| 2017 | 170 | 4th lowest of 15 · 64% of median | 63 | 2.3 |
| 2018 | 265 | 8th lowest of 15 · 100% of median | 68 | 2.9 |
| 2019 | 289 | 9th lowest of 15 · 109% of median | 63 | 2.9 |
| 2020 | 213 | 7th lowest of 15 · 80% of median | 98 | 1.9 |
| 2021 | 209 | 6th lowest of 15 · 79% of median | 92 | 2.5 |
| 2022 | 167 | 3rd lowest of 15 · 63% of median | 80 | 2.0 |
| 2023 | 192 | 5th lowest of 15 · 72% of median | 116 | 1.5 |
| 2024 | 118 | 1st lowest of 15 · 44% of median | 66 | 1.1 |
| 2025 | 406 | 13th lowest of 15 · 153% of median | 99 | 3.2 |
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.