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DUNN SPRING NO 1
Structure dossier · WDID 4505270 · 4 · ALKALI CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:26 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 1925-06-01 — 946th most senior of the 1378 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: HELMER SPRING (1914-09-18). Immediately behind: DUNN SPRING NO 2 (1925-06-01).
Decreed rights (2)
| 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 |
|---|---|---|---|---|---|---|---|
| 49673.27545 | 1925-06-01 | 1986-12-31 | 0.011 | 0.0 | C | IRRSTK | |
| 49914.0 | 1986-08-29 | 1986-12-31 | 0.033 | 0.0 | C | IRRFISDOMWLD |
Recorded use (last 10 years on record)
In a median year this structure has a recorded diversion of 1 AF. Its most recent year on record, 2001, came in at 2 AF — 200% of that, and 8th lowest of the 10 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) |
|---|---|---|---|---|
| 1990 | 1 | 2nd lowest of 10 · 100% of median | 7 | 0.0 |
| 1993 | 4 | 9th lowest of 10 · 400% of median | 47 | 0.0 |
| 1994 | 1 | 2nd lowest of 10 · 100% of median | 35 | 0.0 |
| 1995 | 6 | 10th lowest of 10 · 600% of median | 58 | 0.1 |
| 1996 | 0 | 1st lowest of 10 · 0% of median | 23 | 0.0 |
| 1997 | 1 | 2nd lowest of 10 · 100% of median | 31 | 0.0 |
| 1998 | 1 | 2nd lowest of 10 · 100% of median | 37 | 0.0 |
| 1999 | 1 | 2nd lowest of 10 · 100% of median | 54 | 0.0 |
| 2000 | 1 | 2nd lowest of 10 · 100% of median | 35 | 0.0 |
| 2001 | 2 | 8th lowest of 10 · 200% of median | 26 | 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.