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NASH AND PETERSON DITCH
Structure dossier · WDID 3800897 · 1 · ROARING FORK RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 19:51 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 1900-09-01 — 521st most senior of the 4788 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: MARTIN DITCH NO 4 (1900-06-01). Immediately behind: ADAMS CROSSLAND WELL 1 (1900-09-01).
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 |
|---|---|---|---|---|---|---|---|
| 30941.18506 | 1900-09-01 | 1936-08-25 | 0.35 | 0.0 | C | IRR | 332 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 36 AF. Its most recent year on record, 2024, came in at 30 AF — 83% of that, and 3rd 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) |
|---|---|---|---|---|---|
| 1953 | 907 | 11th lowest of 15 · 2519% of median | — | 124 | 4.0 |
| 1969 | 3,935 | 14th lowest of 15 · 10931% of median | — | 124 | 16.0 |
| 1975 | 3,618 | 13th lowest of 15 · 10050% of median | — | 153 | 12.0 |
| 1976 | 6,565 | 15th lowest of 15 · 18236% of median | — | 180 | 20.0 |
| 1977 | 1,254 | 12th lowest of 15 · 3483% of median | — | 81 | 8.0 |
| 2012 | 25 | 2nd lowest of 15 · 69% of median | 25 | 125 | 0.1 |
| 2013 | 11 | 1st lowest of 15 · 31% of median | 11 | 59 | 0.1 |
| 2016 | 36 | 6th lowest of 15 · 100% of median | 36 | 184 | 0.1 |
| 2017 | 36 | 6th lowest of 15 · 100% of median | 36 | 184 | 0.1 |
| 2018 | 36 | 6th lowest of 15 · 100% of median | 36 | 184 | 0.1 |
| 2020 | 36 | 6th lowest of 15 · 100% of median | 36 | 184 | 0.1 |
| 2021 | 30 | 3rd lowest of 15 · 83% of median | 30 | 154 | 0.1 |
| 2022 | 30 | 3rd lowest of 15 · 83% of median | 30 | 154 | 0.1 |
| 2023 | 36 | 6th lowest of 15 · 100% of median | 36 | 185 | 0.1 |
| 2024 | 30 | 3rd lowest of 15 · 83% of median | 30 | 154 | 0.1 |
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.