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LARSON BROTHERS DITCH
Structure dossier · WDID 4000566 · 1 · ALUM GULCH · DWR record
Where this page's figures come from
Generated 2026-08-28 00:44 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 1910-04-10 — 1426th most senior of the 4661 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: FRANK L TRICKLE SEEPS D. (1910-03-15). Immediately behind: STINGLEY GULCH DITCH (1911-04-15).
Decreed rights (1)
| 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 |
|---|---|---|---|---|---|---|---|
| 25807.22014 | 1910-04-10 | 1930-02-10 | 5.75 | 0.0 | C | IRR | G65 |
Legal record & documents
1 decreed actions on record across
1 court case:
CA2030.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA2030 | 1 | 1930-02-10 | 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 1,240 AF. Its most recent year on record, 2024, came in at 1,843 AF — 149% of that, and 13th lowest of the 15 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) |
|---|---|---|---|---|
| 2010 | 1,924 | 14th lowest of 15 · 155% of median | 208 | 9.5 |
| 2011 | 991 | 5th lowest of 15 · 80% of median | 206 | 5.8 |
| 2012 | 594 | 2nd lowest of 15 · 48% of median | 212 | 3.3 |
| 2013 | 771 | 4th lowest of 15 · 62% of median | 210 | 4.5 |
| 2014 | 1,240 | 8th lowest of 15 · 100% of median | 212 | 6.9 |
| 2015 | 1,566 | 11th lowest of 15 · 126% of median | 210 | 9.0 |
| 2016 | 1,452 | 9th lowest of 15 · 117% of median | 214 | 7.0 |
| 2017 | 1,708 | 12th lowest of 15 · 138% of median | 211 | 10.5 |
| 2018 | 526 | 1st lowest of 15 · 42% of median | 209 | 3.8 |
| 2019 | 2,283 | 15th lowest of 15 · 184% of median | 213 | 10.0 |
| 2020 | 1,000 | 6th lowest of 15 · 81% of median | 198 | 11.2 |
| 2021 | 708 | 3rd lowest of 15 · 57% of median | 203 | 3.8 |
| 2022 | 1,062 | 7th lowest of 15 · 86% of median | 175 | 6.0 |
| 2023 | 1,459 | 10th lowest of 15 · 118% of median | 180 | 5.0 |
| 2024 | 1,843 | 13th lowest of 15 · 149% of median | 190 | 6.0 |
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 | 1 right(s), seniority decoded |
| diversion record | present | 12134 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 1970-2024 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.