Hydrohistorian
← My Water · Print / save as PDF
SOUTH PLATTE SMART R A 3
Structure dossier · WDID 6402020 · RA · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 00:07 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 1975-12-31 — 1559th most senior of the 2052 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: INDIAN CAVE WELL 37139 (1975-09-01). Immediately behind: SIMPSON DRAW DITCH 1 (1913-07-13).
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 |
|---|---|---|---|---|---|---|---|
| 46020.0 | 1975-12-31 | 1975-12-31 | 300.0 | 0.0 | A | RCH | |
| 47271.0 | 1979-06-04 | 1979-12-31 | 1814.0 | 79.0 | A | RCH |
Legal record & documents
6 decreed actions on record across
2 court cases:
W8106, 84CW0125.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W8106 | 4 | 1979-12-31 | S |
84CW0125 | 2 | 1979-12-31 | 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 14 years on record)
In a median year this structure has a recorded diversion of 928 AF. Its most recent year on record, 2024, came in at 105 AF — 11% of that, and 1st lowest of the 14 years with a recorded volume.
| 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 | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 2011 | 173 | 2nd lowest of 14 · 19% of median | 17 | 6.9 |
| 2012 | 909 | 7th lowest of 14 · 98% of median | 123 | 5.3 |
| 2013 | 1,112 | 11th lowest of 14 · 120% of median | 205 | 4.9 |
| 2014 | 1,002 | 10th lowest of 14 · 108% of median | 149 | 6.4 |
| 2015 | 966 | 9th lowest of 14 · 104% of median | 146 | 6.5 |
| 2016 | 895 | 6th lowest of 14 · 96% of median | 140 | 4.5 |
| 2017 | 1,424 | 14th lowest of 14 · 153% of median | 327 | 4.6 |
| 2018 | 1,389 | 13th lowest of 14 · 150% of median | 324 | 6.4 |
| 2019 | 1,148 | 12th lowest of 14 · 124% of median | 348 | 5.8 |
| 2020 | 685 | 4th lowest of 14 · 74% of median | 333 | 4.5 |
| 2021 | 703 | 5th lowest of 14 · 76% of median | 331 | 5.2 |
| 2022 | 948 | 8th lowest of 14 · 102% of median | 302 | 5.3 |
| 2023 | 325 | 3rd lowest of 14 · 35% of median | 228 | 1.5 |
| 2024 | 105 | 1st lowest of 14 · 11% of median | 167 | 0.6 |
Trends for this structure
Recorded use shows no clear trend over its last 14 recorded years — which is itself worth knowing.
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 | 2 right(s), seniority decoded |
| diversion record | present | 3140 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 56% of the irrigation seasons in 1998-2024 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.