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MATHER DITCH
Structure dossier · WDID 5200590 · 1 · SHEEPHORN CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:49 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 1890-09-11 — 34th most senior of the 562 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: WILLOW CREEK DITCH (1890-09-10). Immediately behind: RUNDELL NO 2 DITCH (1890-09-11).
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 |
|---|---|---|---|---|---|---|---|
| 14864.0 | 1890-09-11 | 1890-11-20 | 2.5 | 0.0 | C | IRR | 33 |
| 19790.16269 | 1894-07-17 | 1907-01-26 | 3.1 | 0.0 | C | IRR | 62 |
| 29437.21717 | 1909-06-17 | 1946-08-30 | 2.38 | 0.0 | C | IRR | 147 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 554 AF. Its most recent year on record, 2019, came in at 137 AF — 25% of that, and 2nd 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) |
|---|---|---|---|---|
| 2003 | 546 | 6th lowest of 15 · 99% of median | 68 | 4.1 |
| 2004 | 554 | 8th lowest of 15 · 100% of median | 69 | 4.1 |
| 2005 | 597 | 10th lowest of 15 · 108% of median | 96 | 3.2 |
| 2006 | 460 | 5th lowest of 15 · 83% of median | 65 | 3.6 |
| 2007 | 547 | 7th lowest of 15 · 99% of median | 61 | 4.6 |
| 2008 | 750 | 13th lowest of 15 · 135% of median | 64 | 6.0 |
| 2009 | 684 | 11th lowest of 15 · 124% of median | 76 | 4.6 |
| 2010 | 714 | 12th lowest of 15 · 129% of median | 61 | 6.0 |
| 2011 | 891 | 15th lowest of 15 · 161% of median | 72 | 6.3 |
| 2012 | 580 | 9th lowest of 15 · 105% of median | 81 | 4.0 |
| 2013 | 857 | 14th lowest of 15 · 155% of median | 71 | 7.0 |
| 2016 | 368 | 4th lowest of 15 · 66% of median | 62 | 3.2 |
| 2017 | 173 | 3rd lowest of 15 · 31% of median | 52 | 1.8 |
| 2018 | 78 | 1st lowest of 15 · 14% of median | 79 | 0.8 |
| 2019 | 137 | 2nd lowest of 15 · 25% of median | 36 | 2.1 |
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.