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SOUTH RESERVOIR COMPLEX
Structure dossier · WDID 0203050 · RESERVOIR SYSTEM · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 20:29 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (e70d0b5) — every figure regenerates from this named code version and data image.
Current administration
● In priority — no active call senior to this structure's rights affects its district (23 active call(s) checked).
Which of its rights get called out?
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 — 12th 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: NORTH RESERVOIR COMPLEX (1860-12-28). Immediately behind: 0203504 (1860-12-28).
Decreed rights (16)
| 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 | |
| 4822.0 | 1863-03-15 | 1883-04-28 | 0.0 | 0.0 | A | MUNAUG | |
| 4822.0 | 1863-03-15 | 1883-04-28 | 0.0 | 0.0 | C | MUNAUG | |
| 5205.0 | 1864-04-01 | 1883-04-28 | 0.0 | 0.0 | C | MUNAUGCUR | |
| 13108.0 | 1885-11-20 | 1893-07-08 | 0.0 | 0.0 | C | MUNAUGCUR | |
| 13393.0 | 1886-09-01 | 1893-07-08 | 0.0 | 0.0 | C | MUNAUGCUR | |
| 13468.0 | 1886-11-15 | 1893-07-08 | 0.0 | 0.0 | C | MUNAUGCUR | |
| 13772.0 | 1887-09-15 | 1893-07-08 | 0.0 | 0.0 | C | MUNAUGCUR | |
| 23152.19981 | 1904-09-15 | 1918-05-18 | 0.0 | 0.0 | A | MUNAUGCUR | |
| 24974.15492 | 1892-05-31 | 1922-06-21 | 0.0 | 0.0 | A | MUNAUGCUR | |
| 24974.15587 | 1892-09-03 | 1922-06-21 | 0.0 | 0.0 | C | MUNAUGCUR | |
| 25723.0 | 1920-06-05 | 1922-06-21 | 0.0 | 0.0 | A | MUNAUGCUR | |
| 26297.0 | 1921-12-31 | 1922-06-21 | 0.0 | 0.0 | C | MUNAUGCUR | |
| 55514.0 | 2001-12-28 | 2001-12-31 | 2400.0 | 0.0 | A | MUN | |
| 58437.0 | 2009-12-29 | 2009-12-31 | 0.0 | 2258.0 | A | MUN |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 3,054 AF. Its most recent year on record, 2025, came in at 4,110 AF — 135% of that, and 11th 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 | 62 | 1st lowest of 15 · 2% of median | — | 61 | 1.0 |
| 2012 | 3,728 | 9th lowest of 15 · 122% of median | 3,591 | 366 | 35.1 |
| 2013 | 1,487 | 4th lowest of 15 · 49% of median | 4,077 | 365 | 31.4 |
| 2014 | 4,650 | 13th lowest of 15 · 152% of median | 2,940 | 365 | 48.8 |
| 2015 | 4,630 | 12th lowest of 15 · 152% of median | 61 | 365 | 48.6 |
| 2016 | 6,079 | 15th lowest of 15 · 199% of median | 1,807 | 366 | 83.2 |
| 2017 | 3,734 | 10th lowest of 15 · 122% of median | 358 | 288 | 42.2 |
| 2018 | 1,776 | 6th lowest of 15 · 58% of median | 581 | 165 | 36.0 |
| 2019 | 1,091 | 3rd lowest of 15 · 36% of median | 3,307 | 361 | 27.1 |
| 2020 | 5,731 | 14th lowest of 15 · 188% of median | 3,400 | 366 | 35.6 |
| 2021 | 295 | 2nd lowest of 15 · 10% of median | 3,575 | 365 | 0.8 |
| 2022 | 2,063 | 7th lowest of 15 · 68% of median | 1,427 | 365 | 14.6 |
| 2023 | 3,054 | 8th lowest of 15 · 100% of median | 443 | 365 | 62.8 |
| 2024 | 1,696 | 5th lowest of 15 · 56% of median | 7,714 | 366 | 18.3 |
| 2025 | 4,110 | 11th lowest of 15 · 135% of median | 455 | 304 | 71.9 |
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.