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PILOT ROCK DITCH
Structure dossier · WDID 4000586 · 1 · SMITH FORK · DWR record
Where this page's figures come from
Generated 2026-08-27 23:11 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 1886-04-16 — 138th 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: BRONCHO DITCH (1886-04-15). Immediately behind: SESSIONS DITCH (1886-04-30).
Decreed rights (12)
| 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 |
|---|---|---|---|---|---|---|---|
| 13255.0 | 1886-04-16 | 1889-06-17 | 4.25 | 0.0 | C | IRR | 2 |
| 19413.15066 | 1891-04-01 | 1903-02-27 | 0.15 | 0.0 | C | IRR | R19 |
| 19413.15432 | 1892-04-01 | 1903-02-27 | 0.375 | 0.0 | C | IRR | 20 |
| 19413.15797 | 1893-04-01 | 1903-02-27 | 0.375 | 0.0 | C | IRR | 24 |
| 19413.16162 | 1894-04-01 | 1903-02-27 | 0.188 | 0.0 | C | IRR | 27 |
| 19413.16527 | 1895-04-01 | 1903-02-27 | 0.188 | 0.0 | C | IRR | 28 |
| 19413.16893 | 1896-04-01 | 1903-02-27 | 0.094 | 0.0 | C | IRR | R32 |
| 19413.17623 | 1898-04-01 | 1903-02-27 | 0.544 | 0.0 | C | IRR | 35 |
| 19413.17988 | 1899-04-01 | 1903-02-27 | 0.75 | 0.0 | C | IRR | 38 |
| 19413.18353 | 1900-04-01 | 1903-02-27 | 0.112 | 0.0 | C | IRR | 39 |
| 21263.18353 | 1900-04-01 | 1914-06-23 | 10.275 | 0.0 | C | IRR | A57 |
| 31924.12297 | 1883-09-01 | 1954-03-20 | 2.5 | 0.0 | C | DOMSTK | J13 |
Legal record & documents
14 decreed actions on record across
5 court cases:
CA3503, CA0617, CA0340, CA0038, 75CW0087.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA3503 | 1 | 1954-03-20 | S |
CA0617 | 1 | 1914-06-23 | S |
CA0340 | 9 | 1903-02-27 | S |
CA0038 | 2 | 1889-06-17 | O |
75CW0087 | 1 | 1889-06-17 | 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 873 AF. Its most recent year on record, 2024, came in at 709 AF — 81% of that, and 7th 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 | 1,583 | 13th lowest of 15 · 181% of median | 188 | 12.5 |
| 2011 | 1,965 | 14th lowest of 15 · 225% of median | 214 | 13.5 |
| 2012 | 574 | 5th lowest of 15 · 66% of median | 211 | 5.2 |
| 2013 | 1,417 | 11th lowest of 15 · 162% of median | 213 | 14.0 |
| 2014 | 955 | 9th lowest of 15 · 109% of median | 214 | 6.5 |
| 2015 | 1,494 | 12th lowest of 15 · 171% of median | 213 | 12.0 |
| 2016 | 2,003 | 15th lowest of 15 · 229% of median | 217 | 16.5 |
| 2017 | 1,127 | 10th lowest of 15 · 129% of median | 212 | 12.0 |
| 2018 | 318 | 3rd lowest of 15 · 36% of median | 119 | 6.7 |
| 2019 | 630 | 6th lowest of 15 · 72% of median | 110 | 8.4 |
| 2020 | 476 | 4th lowest of 15 · 54% of median | 127 | 6.6 |
| 2021 | 207 | 2nd lowest of 15 · 24% of median | 78 | 4.1 |
| 2022 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2023 | 873 | 8th lowest of 15 · 100% of median | 95 | 8.6 |
| 2024 | 709 | 7th lowest of 15 · 81% of median | 85 | 10.8 |
Trends for this structure
Recorded use is falling over its last 15 recorded years (-97 AF/yr, Mann-Kendall p=0.023).
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 | 12 right(s), seniority decoded |
| diversion record | present | 11379 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 98% 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.