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CHEESMAN RES
Structure dossier · WDID 8003550 · RESERVOIR · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 00:35 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 LAST CHANCE DITCH 2 (SOUTH PLATTE RIVER, priority 1863-12-30).
● Junior rights called out — call at NEVADA DITCH (SOUTH PLATTE RIVER, priority 1865-12-30).
● 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).
● Junior rights called out — call at HARMONY DITCH 1 (SOUTH PLATTE RIVER, priority 1897-05-02).
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 1860-12-28 — 19th 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: 2303965 (1860-12-28). Immediately behind: 2300652 (1860-12-31).
Decreed rights (7)
| 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 |
|---|---|---|---|---|---|---|---|
| 4015.0 | 1860-12-28 | 1883-12-10 | 0.0 | 0.0 | A | IRRMUN | |
| 4015.0 | 1860-12-28 | 1883-12-10 | 0.0 | 0.0 | C | IRRMUN | |
| 14423.0 | 1889-06-27 | 1913-05-22 | 30691.0 | 0.0 | A | MUNFIRDOMOTH | |
| 15973.0 | 1893-09-24 | 1913-05-22 | 48373.0 | 0.0 | A | STOMUNFIRDOM | |
| 29219.0 | 1929-12-31 | 1953-03-24 | 79064.0 | 0.0 | A | IRRMUNCOMINDFIRDOMAUGPWR | |
| 29386.26117 | 1921-07-04 | 1972-05-18 | 0.0 | 0.0 | A | IRRMUNCOMDOMAUGPWRALL | |
| 29386.26117 | 1921-07-04 | 1972-05-18 | 0.0 | 0.0 | C | IRRMUNCOMDOMAUGPWRALL |
Legal record & documents
53 decreed actions on record across
15 court cases:
CA3635, 96CW0145, 08CW0159, 83CW0280, CA3286, 84CW0056, CA1636, 88CW0263, 88CW0262, 86CW0223 and 5 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA3635 | 1 | 1972-05-18 | S |
96CW0145 | 1 | 1972-05-18 | S |
08CW0159 | 2 | 1972-05-18 | S |
83CW0280 | 1 | 1971-12-31 | O |
CA3286 | 2 | 1953-03-24 | S |
84CW0056 | 3 | 1918-05-18 | O, S |
CA1636 | 2 | 1913-05-22 | O |
88CW0263 | 4 | 1913-05-22 | O, S |
88CW0262 | 3 | 1913-05-22 | O, S |
86CW0223 | 4 | 1889-10-18 | O |
84CW0057 | 22 | 1889-10-18 | O |
84CW0055 | 4 | 1889-10-18 | O |
80CW0313 | 1 | 1889-10-18 | O |
20CW3200 | 1 | 1883-12-10 | O |
20CW3103 | 2 | 1883-12-10 | 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 15 years on record)
In a median year this structure has a recorded diversion of 38,612 AF. Its most recent year on record, 2025, came in at 19,040 AF — 49% of that, and 2nd lowest of the 15 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) |
|---|---|---|---|---|---|
| 2011 | 33,002 | 6th lowest of 15 · 86% of median | 35,976 | 243 | 360.0 |
| 2012 | 16,885 | 1st lowest of 15 · 44% of median | 40,665 | 244 | 175.0 |
| 2013 | 49,496 | 10th lowest of 15 · 128% of median | 23,012 | 296 | 393.0 |
| 2014 | 24,411 | 4th lowest of 15 · 63% of median | 25,588 | 306 | 381.6 |
| 2015 | 38,612 | 8th lowest of 15 · 100% of median | 42,404 | 273 | 402.7 |
| 2016 | 22,201 | 3rd lowest of 15 · 58% of median | 23,535 | 304 | 139.0 |
| 2017 | 35,151 | 7th lowest of 15 · 91% of median | 31,189 | 321 | 359.8 |
| 2018 | 26,994 | 5th lowest of 15 · 70% of median | 38,967 | 297 | 177.0 |
| 2019 | 40,831 | 9th lowest of 15 · 106% of median | 34,910 | 325 | 558.0 |
| 2020 | 51,630 | 12th lowest of 15 · 134% of median | 72,926 | 300 | 388.0 |
| 2021 | 73,134 | 14th lowest of 15 · 189% of median | 35,385 | 350 | 378.0 |
| 2022 | 50,254 | 11th lowest of 15 · 130% of median | 35,793 | 343 | 367.0 |
| 2023 | 67,473 | 13th lowest of 15 · 175% of median | 65,729 | 356 | 429.0 |
| 2024 | 87,841 | 15th lowest of 15 · 228% of median | 86,323 | 356 | 832.1 |
| 2025 | 19,040 | 2nd lowest of 15 · 49% of median | 24,947 | 223 | 175.1 |
Trends for this structure
Recorded use is rising over its last 15 recorded years (+3230 AF/yr, Mann-Kendall p=0.038).
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 | 7 right(s), seniority decoded |
| diversion record | present | 14053 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 1972-2025 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.