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CHASE & COLTHARP DITCH
Structure dossier · WDID 4300573 · 1 · WHITE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 20:33 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — every figure regenerates from this named code version and data image.
Which of its rights get called out?
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 1892-10-07 — 919th most senior of the 3293 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: LITTLE COLOROW PUMP (1888-06-14). Immediately behind: GOEDER DITCH (1902-05-10).
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 |
|---|---|---|---|---|---|---|---|
| 28350.15621 | 1892-10-07 | 1929-08-19 | 7.4 | 0.0 | C | IRR | 287 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 575 AF. Its most recent year on record, 2024, came in at 0 AF — 0% 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) |
|---|---|---|---|---|
| 2003 | 366 | 5th lowest of 15 · 64% of median | 100 | 2.4 |
| 2004 | 422 | 6th lowest of 15 · 73% of median | 74 | 3.0 |
| 2005 | 720 | 10th lowest of 15 · 125% of median | 126 | 3.0 |
| 2006 | 575 | 8th lowest of 15 · 100% of median | 151 | 2.0 |
| 2007 | 512 | 7th lowest of 15 · 89% of median | 97 | 3.0 |
| 2008 | 756 | 11th lowest of 15 · 132% of median | 138 | 3.0 |
| 2009 | 4,729 | 15th lowest of 15 · 822% of median | 137 | 20.0 |
| 2010 | 3,332 | 14th lowest of 15 · 580% of median | 120 | 15.0 |
| 2011 | 584 | 9th lowest of 15 · 102% of median | 79 | 5.0 |
| 2012 | 1,036 | 13th lowest of 15 · 180% of median | 114 | 5.0 |
| 2013 | 98 | 4th lowest of 15 · 17% of median | 59 | 2.0 |
| 2015 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2016 | 0 | 1st lowest of 15 · 0% of median | 2 | 0.0 |
| 2019 | 893 | 12th lowest of 15 · 155% of median | 214 | 3.3 |
| 2024 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
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.