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MONUMENT RESERVOIR NO 1
Structure dossier · WDID 7203842 · 3 · LEON CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 23:44 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — 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 1951-05-01 — 638th most senior of the 2166 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: NICHOLS WELL (1951-03-31). Immediately behind: MONUMENT RESERVOIR NO 2 (1951-05-01).
Decreed rights (4)
| 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 |
|---|---|---|---|---|---|---|---|
| 37010.0 | 1951-05-01 | 1959-07-21 | 371.29 | 0.0 | A | IRR | |
| 40013.3701 | 1951-05-01 | 1972-04-13 | 78.725 | 0.0 | A | IRR | 1004 |
| 40833.0 | 1961-10-18 | 1972-04-13 | 122.707 | 0.0 | A | IRR | 1030 |
| 58074.56795 | 2005-07-01 | 2009-12-31 | 0.0 | 4682.0 | A | MUNAUG |
Legal record & documents
7 decreed actions on record across
5 court cases:
09CW0030, CA13368, 85CW0033, 80CW0139, CA8303.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
09CW0030 | 1 | 2009-12-31 | S |
CA13368 | 2 | 1972-04-13 | S |
85CW0033 | 1 | 1972-04-13 | S |
80CW0139 | 1 | 1972-04-13 | S |
CA8303 | 2 | 1959-07-21 | 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 22 AF. Its most recent year on record, 2022, came in at 22 AF — 100% of that, and 2nd lowest of the 3 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) |
|---|---|---|---|---|---|
| 1988 | — | no recorded volume | 666 | 0 | — |
| 1989 | — | no recorded volume | 405 | 0 | — |
| 1990 | 517 | 3rd lowest of 3 · 2350% of median | — | 36 | 10.0 |
| 2006 | — | no recorded volume | 634 | 0 | — |
| 2007 | — | no recorded volume | 625 | 0 | — |
| 2013 | — | no recorded volume | 111 | 0 | — |
| 2015 | — | no recorded volume | 354 | 0 | — |
| 2016 | — | no recorded volume | 414 | 0 | — |
| 2017 | — | no recorded volume | 397 | 0 | — |
| 2018 | 20 | 1st lowest of 3 · 91% of median | 387 | 61 | 0.2 |
| 2019 | — | no recorded volume | 420 | 0 | — |
| 2020 | — | no recorded volume | 437 | 0 | — |
| 2021 | — | no recorded volume | 336 | 0 | — |
| 2022 | 22 | 2nd lowest of 3 · 100% of median | 412 | 100 | 0.2 |
| 2023 | — | no recorded volume | 916 | 0 | — |
How good is our record of it?
Grade B (7/10 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 | 4 right(s), seniority decoded |
| diversion record | present | 197 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 2% of the irrigation seasons in 1976-2023 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.