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GILCREST RESERVOIR
Structure dossier · WDID 0203388 · RESERVOIR · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 01:25 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (0576005) — 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.
Current administration
● Junior rights called out — call at LOWER LATHAM DITCH (SOUTH PLATTE RIVER, priority 1877-11-14).
● Junior rights called out — call at WESTERN MUTUAL DITCH (SOUTH PLATTE RIVER, priority 1871-08-09).
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 1870-10-25 — 344th most senior of the 21881 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: UNITED GRAVEL PIT STORAGE RES (1870-10-25). Immediately behind: BARR LAKE (1870-10-25).
Decreed rights (11)
| 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 |
|---|---|---|---|---|---|---|---|
| 7603.0 | 1870-10-25 | 1882-04-11 | 0.0 | 0.0 | C | MUNAUGCURRCH | |
| 7928.0 | 1871-09-15 | 1882-04-11 | 0.0 | 0.0 | C | MUNAUGCURRCH | |
| 9080.0 | 1874-11-10 | 1882-04-11 | 0.0 | 0.0 | C | MUNAUGCURRCH | |
| 10120.0 | 1877-09-15 | 1882-04-11 | 0.0 | 0.0 | C | MUNAUGCURRCH | |
| 45655.45437 | 1974-05-27 | 1975-12-31 | 0.0 | 0.0 | C | MUNAUGCURRCH | |
| 58585.0 | 2010-05-26 | 2010-12-31 | 0.0 | 100.0 | A | IRRAUGRCH | |
| 58585.0 | 2010-05-26 | 2010-12-31 | 0.0 | 260.0 | C | IRRAUGRCH | |
| 59167.0 | 2011-12-29 | 2011-12-31 | 548.33 | 2451.67 | A | MUNAUGCUR | |
| 59791.0 | 2013-09-13 | 2013-12-31 | 234.7 | 765.3 | A | MUNAUGCURRCH | |
| 60264.0 | 2014-12-30 | 2014-12-31 | 0.0 | 3000.0 | A | MUNAUGRCH | |
| 60750.0 | 2016-04-29 | 2016-12-31 | 0.0 | 33400.0 | A | IRRMUNCOMINDRECFISFIRDOMSTKAUG |
Legal record & documents
59 decreed actions on record across
13 court cases:
16CW3195, 16CW3059, 16CW3058, 14CW3164, 22CW3039, 13CW3173, 20CW3161, 11CW0280, 10CW0141, 03CW0442 and 3 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
16CW3195 | 28 | 2016-12-31 | O, S |
16CW3059 | 1 | 2016-12-31 | S |
16CW3058 | 2 | 2016-12-31 | S |
14CW3164 | 1 | 2014-12-31 | S |
22CW3039 | 1 | 2013-12-31 | S |
13CW3173 | 2 | 2013-12-31 | S |
20CW3161 | 1 | 2011-12-31 | S |
11CW0280 | 1 | 2011-12-31 | S |
10CW0141 | 1 | 2010-12-31 | S |
03CW0442 | 2 | 2002-12-31 | S |
13CW3026 | 10 | 1975-12-31 | O, S |
18CW3121 | 5 | 1883-04-28 | O |
14CW3177 | 4 | 1883-04-28 | O |
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 13 years on record)
In a median year this structure has a recorded diversion of 487 AF. Its most recent year on record, 2025, came in at 1,893 AF — 389% of that, and 13th lowest of the 13 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) |
|---|---|---|---|---|---|
| 2013 | 173 | 3rd lowest of 13 · 36% of median | — | 24 | 5.9 |
| 2014 | 975 | 12th lowest of 13 · 200% of median | 8 | 64 | 14.1 |
| 2015 | 231 | 4th lowest of 13 · 47% of median | 9 | 29 | 6.6 |
| 2016 | 101 | 2nd lowest of 13 · 21% of median | 51 | 23 | 4.8 |
| 2017 | 298 | 5th lowest of 13 · 61% of median | 143 | 55 | 4.3 |
| 2018 | 59 | 1st lowest of 13 · 12% of median | 249 | 22 | 3.1 |
| 2019 | 707 | 9th lowest of 13 · 145% of median | 65 | 122 | 9.4 |
| 2020 | 306 | 6th lowest of 13 · 63% of median | 258 | 79 | 4.7 |
| 2021 | 638 | 8th lowest of 13 · 131% of median | 347 | 93 | 10.6 |
| 2022 | 487 | 7th lowest of 13 · 100% of median | 744 | 126 | 8.5 |
| 2023 | 894 | 11th lowest of 13 · 184% of median | 707 | 365 | 21.3 |
| 2024 | 792 | 10th lowest of 13 · 163% of median | 70 | 366 | 20.8 |
| 2025 | 1,893 | 13th lowest of 13 · 389% of median | 100 | 304 | 49.2 |
Trends for this structure
Recorded use is rising over its last 13 recorded years (+69 AF/yr, Mann-Kendall p=0.033).
How good is our record of it?
Grade B (8/10 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 | 11 right(s), seniority decoded |
| diversion record | present | 1672 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 65% of the irrigation seasons in 2013-2025 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.