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SULLIVAN DITCH
Structure dossier · WDID 3100668 · 1 · LOS PINOS RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 22:12 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 1910-04-01 — 337th most senior of the 1037 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: GIPSON DITCH (1908-10-05). Immediately behind: MITCHELL WELL #1 (1910-12-31).
Decreed rights (5)
| 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 |
|---|---|---|---|---|---|---|---|
| 22005.0 | 1910-04-01 | 1934-06-12 | 7.08 | 0.0 | C | IRR | P-36 |
| 57343.55619 | 2002-04-12 | 2007-12-31 | 0.0 | 1.25 | C | STOIRRSTK | |
| 57514.0 | 2007-06-20 | 2007-12-31 | 0.5 | 0.0 | C | STOIRRSTK | |
| 59900.55619 | 2002-04-12 | 2014-12-31 | 0.0 | 1.25 | C | IRRSTK | |
| 60386.0 | 2015-05-01 | 2015-12-31 | 0.09 | 0.0 | C | IRR |
Legal record & documents
10 decreed actions on record across
8 court cases:
15CW0012, 14CW3042, 23CW3009, 14CW3046, 07CW0084, 07CW0083, W0028, CA1248.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
15CW0012 | 1 | 2015-12-31 | S |
14CW3042 | 1 | 2014-12-31 | S |
23CW3009 | 2 | 2007-12-31 | S |
14CW3046 | 1 | 2007-12-31 | S |
07CW0084 | 1 | 2007-12-31 | S |
07CW0083 | 1 | 2007-12-31 | S |
W0028 | 1 | 1934-06-12 | O |
CA1248 | 2 | 1934-06-12 | 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 1,604 AF. Its most recent year on record, 2025, came in at 1,650 AF — 103% of that, and 10th 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 | 2,005 | 14th lowest of 15 · 125% of median | — | 196 | 8.8 |
| 2012 | 1,760 | 13th lowest of 15 · 110% of median | — | 167 | 8.2 |
| 2013 | 1,215 | 2nd lowest of 15 · 76% of median | — | 167 | 7.2 |
| 2014 | 2,023 | 15th lowest of 15 · 126% of median | — | 224 | 9.0 |
| 2015 | 1,506 | 6th lowest of 15 · 94% of median | — | 211 | 8.8 |
| 2016 | 1,597 | 7th lowest of 15 · 100% of median | — | 187 | 7.9 |
| 2017 | 1,604 | 8th lowest of 15 · 100% of median | — | 173 | 8.5 |
| 2018 | 1,278 | 3rd lowest of 15 · 80% of median | — | 182 | 7.6 |
| 2019 | 1,759 | 12th lowest of 15 · 110% of median | — | 239 | 8.2 |
| 2020 | 1,658 | 11th lowest of 15 · 103% of median | — | 275 | 7.5 |
| 2021 | 1,433 | 5th lowest of 15 · 89% of median | — | 365 | 7.5 |
| 2022 | 1,069 | 1st lowest of 15 · 67% of median | — | 365 | 5.8 |
| 2023 | 1,635 | 9th lowest of 15 · 102% of median | — | 365 | 7.6 |
| 2024 | 1,391 | 4th lowest of 15 · 87% of median | — | 366 | 7.5 |
| 2025 | 1,650 | 10th lowest of 15 · 103% of median | — | 304 | 6.2 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
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 | 5 right(s), seniority decoded |
| diversion record | present | 12496 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 77% of the irrigation seasons in 1950-2025 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.