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HOWE & SHERWOOD IRR D
Structure dossier · WDID 5900593 · 1 · EAST RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 23:37 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 1882-07-31 — 82nd 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: EAST RIVER NO 1 DITCH (1882-07-31). Immediately behind: CASTLE CREEK NO 1 DITCH (1883-04-10).
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 |
|---|---|---|---|---|---|---|---|
| 11900.0 | 1882-07-31 | 1906-09-14 | 3.59 | 0.0 | C | IRR | 37 |
| 17055.0 | 1896-09-10 | 1906-09-14 | 1.66 | 0.0 | C | IRR | 111 |
| 30667.119 | 1882-07-31 | 1941-04-29 | 10.55 | 0.0 | C | IRR | 304 |
Legal record & documents
6 decreed actions on record across
3 court cases:
W0558, CA2021, CA1325.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W0558 | 3 | 1941-04-29 | O, S |
CA2021 | 1 | 1941-04-29 | S |
CA1325 | 2 | 1906-09-14 | O |
DWR's own records for this structure: net amounts · transactions & adjudication history · scanned decrees (search a case number there for the imaged document). On this site: the district's full legal picture →
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 1,345 AF. Its most recent year on record, 2025, came in at 1,345 AF — 100% of that, and 8th 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 | 2,346 | 14th lowest of 15 · 174% of median | 146 | 15.2 |
| 2012 | 1,431 | 10th lowest of 15 · 106% of median | 197 | 12.4 |
| 2013 | 2,033 | 13th lowest of 15 · 151% of median | 136 | 14.8 |
| 2014 | 1,391 | 9th lowest of 15 · 103% of median | 94 | 9.7 |
| 2015 | 1,246 | 5th lowest of 15 · 93% of median | 94 | 8.7 |
| 2016 | 105 | 1st lowest of 15 · 8% of median | 92 | 1.5 |
| 2017 | 2,683 | 15th lowest of 15 · 200% of median | 115 | 19.4 |
| 2018 | 1,832 | 12th lowest of 15 · 136% of median | 161 | 14.8 |
| 2019 | 713 | 2nd lowest of 15 · 53% of median | 127 | 3.8 |
| 2020 | 1,342 | 7th lowest of 15 · 100% of median | 156 | 10.4 |
| 2021 | 977 | 4th lowest of 15 · 73% of median | 168 | 6.4 |
| 2022 | 1,472 | 11th lowest of 15 · 109% of median | 137 | 9.9 |
| 2023 | 830 | 3rd lowest of 15 · 62% of median | 170 | 3.8 |
| 2024 | 1,298 | 6th lowest of 15 · 96% of median | 123 | 7.2 |
| 2025 | 1,345 | 8th lowest of 15 · 100% of median | 178 | 11.2 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
How good is our record of it?
Grade B (8/10 points) — the components below are the finding; the letter alone is not.
The rubric, component by component
| Check | State | Detail |
|---|---|---|
| identity | complete | name, type, and water source all on file |
| decreed rights | on file | 3 right(s), seniority decoded |
| diversion record | present | 7009 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 65% of the irrigation seasons in 1975-2025 carry measured days |
| published-record stability | stable | no upstream revisions recorded against this structure |
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.