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BLANCO DITCH
Structure dossier · WDID 1300613 · 1 · GRAPE CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:17 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 1889-04-15 — 443rd most senior of the 1017 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: RANGE DITCH (1888-08-10). Immediately behind: F CALDWELL SPRING CREEK (1889-05-01).
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 |
|---|---|---|---|---|---|---|---|
| 14350.0 | 1889-04-15 | 1896-03-12 | 1.94 | 0.0 | C | IRR | 464 |
Recorded use (last 14 years on record)
In a median year this structure has a recorded diversion of 112 AF. Its most recent year on record, 2014, came in at 96 AF — 85% of that, and 5th lowest of the 14 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) |
|---|---|---|---|---|
| 1970 | 107 | 7th lowest of 14 · 95% of median | 170 | 2.0 |
| 1975 | 65 | 4th lowest of 14 · 58% of median | 18 | 1.9 |
| 1979 | 118 | 8th lowest of 14 · 105% of median | 37 | 1.9 |
| 1980 | 150 | 11th lowest of 14 · 133% of median | 40 | 1.9 |
| 1982 | 18 | 3rd lowest of 14 · 16% of median | 10 | 1.0 |
| 1983 | 239 | 13th lowest of 14 · 212% of median | 63 | 1.9 |
| 1985 | 139 | 9th lowest of 14 · 124% of median | 55 | 1.9 |
| 1986 | 450 | 14th lowest of 14 · 400% of median | 118 | 1.9 |
| 1987 | 100 | 6th lowest of 14 · 89% of median | 27 | 1.9 |
| 1996 | 0 | 1st lowest of 14 · 0% of median | 1 | 0.0 |
| 2003 | 0 | 1st lowest of 14 · 0% of median | 1 | 0.0 |
| 2007 | 166 | 12th lowest of 14 · 148% of median | 45 | 1.9 |
| 2010 | 144 | 10th lowest of 14 · 128% of median | 43 | 1.9 |
| 2014 | 96 | 5th lowest of 14 · 85% of median | 28 | 1.8 |
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.