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HORSETOOTH RESERVOIR
Structure dossier · WDID 0303732 · 3 · DIXON CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:35 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 1933-09-14 — 519th most senior of the 2961 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: MACE WELL 1 (1933-08-31). Immediately behind: VANNORSDEL SPRING WELL 4 (1933-11-30).
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 |
|---|---|---|---|---|---|---|---|
| 30572.0 | 1933-09-14 | 1939-11-14 | 42300.0 | 17700.0 | A | IRRMUNINDRECDOMOTH | |
| 35050.31333 | 1935-10-15 | 1953-09-10 | 7985.0 | 2015.0 | A | STOIRRMUNINDRECDOM |
Legal record & documents
51 decreed actions on record across
10 court cases:
W9322, 15CW3053, CA11217, 96CW1122, 18CW3076, 17CW3057, W0108, CA10077, 88CW0051, 05CW0181.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W9322 | 12 | 1977-12-31 | S |
15CW3053 | 12 | 1977-12-31 | S |
CA11217 | 3 | 1953-09-10 | S |
96CW1122 | 1 | 1953-09-10 | S |
18CW3076 | 8 | 1945-12-18 | O, S |
17CW3057 | 8 | 1945-12-18 | O, S |
W0108 | 1 | 1939-11-14 | S |
CA10077 | 4 | 1939-11-14 | S |
88CW0051 | 1 | 1939-11-14 | S |
05CW0181 | 1 | 1939-11-14 | S |
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 106,694 AF. Its most recent year on record, 2015, came in at 52,037 AF — 49% of that, and 1st lowest of the 6 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| 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 | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 2010 | 147,964 | 5th lowest of 6 · 139% of median | 45,262 | 351 | 513.6 |
| 2011 | 154,094 | 6th lowest of 6 · 144% of median | 71,954 | 365 | 522.0 |
| 2012 | 107,657 | 4th lowest of 6 · 101% of median | 80,440 | 366 | 493.3 |
| 2013 | 100,560 | 2nd lowest of 6 · 94% of median | 27,723 | 365 | 513.2 |
| 2014 | 105,731 | 3rd lowest of 6 · 99% of median | 26,536 | 365 | 465.4 |
| 2015 | 52,037 | 1st lowest of 6 · 49% of median | 57,554 | 278 | 317.5 |
| 2016 | — | no recorded volume | 66,746 | 0 | — |
| 2017 | — | no recorded volume | 90,413 | 0 | — |
| 2018 | — | no recorded volume | 8,411 | 0 | — |
| 2019 | — | no recorded volume | 8,172 | 0 | — |
| 2020 | — | no recorded volume | 79,366 | 0 | — |
| 2021 | — | no recorded volume | 44,085 | 0 | — |
| 2022 | — | no recorded volume | 57,791 | 0 | — |
| 2023 | — | no recorded volume | 44,783 | 0 | — |
| 2024 | — | no recorded volume | 11,895 | 0 | — |
How good is our record of it?
Grade A (9/10 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 | 2 right(s), seniority decoded |
| diversion record | present | 6466 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 1997-2024 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.