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ANDREWS FARWELL DITCH
Structure dossier · WDID 0600560 · DITCH · SOUTH BOULDER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:45 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (96d5528) — 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: no administrative call record for this basin.
Where it sits in line
Priority 1864-06-01 — 79th most senior of the 1867 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: LEGGETT-VALMONT INLET D (1864-05-01). Immediately behind: 0600789 (1864-06-01).
On SOUTH BOULDER CREEK at river mile 17.5, it is 41st of 58 down the reach. Immediately upstream: BURKES RES 1. Immediately downstream: COTTONWOOD D 2 WARD RETURN.
Position on the modelled network, not a claim about whose water this is — a stream carries water from many rights at once, and diverted water returns to it.
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 |
|---|---|---|---|---|---|---|---|
| 5266.0 | 1864-06-01 | 1882-06-02 | 1.35 | 0.0 | C | IRR | |
| 7761.0 | 1871-04-01 | 1882-06-02 | 6.26 | 0.0 | C | IRR |
Legal record & documents
2 decreed actions on record across
1 court case:
CA1650.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA1650 | 2 | 1882-06-02 | 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 215 AF. Its most recent year on record, 2025, came in at 274 AF — 127% 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) |
|---|---|---|---|---|
| 2009 | 113 | 3rd lowest of 15 · 53% of median | 57 | 1.4 |
| 2010 | 61 | 1st lowest of 15 · 28% of median | 23 | 1.6 |
| 2011 | 257 | 11th lowest of 15 · 120% of median | 80 | 1.9 |
| 2012 | 63 | 2nd lowest of 15 · 29% of median | 35 | 1.2 |
| 2013 | 223 | 9th lowest of 15 · 104% of median | 75 | 1.9 |
| 2014 | 196 | 7th lowest of 15 · 91% of median | 65 | 1.9 |
| 2015 | 215 | 8th lowest of 15 · 100% of median | 74 | 2.6 |
| 2016 | 230 | 10th lowest of 15 · 107% of median | 58 | 3.3 |
| 2017 | 161 | 6th lowest of 15 · 75% of median | 45 | 2.9 |
| 2018 | 148 | 5th lowest of 15 · 69% of median | 58 | 1.6 |
| 2019 | 263 | 12th lowest of 15 · 122% of median | 85 | 1.7 |
| 2020 | 551 | 15th lowest of 15 · 256% of median | 85 | 6.3 |
| 2021 | 147 | 4th lowest of 15 · 68% of median | 46 | 2.2 |
| 2024 | 303 | 14th lowest of 15 · 141% of median | 84 | 4.5 |
| 2025 | 274 | 13th lowest of 15 · 127% of median | 73 | 5.4 |
Trends for this structure
Recorded use is rising over its last 15 recorded years (+10 AF/yr, Mann-Kendall p=0.048).
Its reference gage, ANDREWS FARWELL DITCH: no clear flow trend.
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 | current | 3859 measured days, newest 385 day(s) before the data's end (DWR publishes ~1 year in arrears) |
| record continuity | sparse | 24% 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.