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LAST CHANCE DITCH
Structure dossier · WDID 0600615 · DITCH · COAL CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 00:34 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (5cd37f7) — 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.
Current administration
● Junior rights called out — call at RURAL DITCH (BOULDER CREEK, priority 1862-05-09).
● Fully called out — call at JONES DONNELLY DITCH (SOUTH BOULDER CREEK, priority 1860-04-30).
● Fully called out — call at HOWARD DITCH (SOUTH BOULDER CREEK, priority 1860-04-01).
● Junior rights called out — call at LOWER LATHAM DITCH (SOUTH PLATTE RIVER, priority 1885-11-20).
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 1862-05-01 — 51st 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: VALMONT LAKE RES (1862-04-01). Immediately behind: RURAL DITCH (1862-05-10).
Decreed rights (13)
| 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 |
|---|---|---|---|---|---|---|---|
| 4504.0 | 1862-05-01 | 1882-06-02 | 1.3 | 0.0 | C | IRRMUN | |
| 5996.0 | 1866-06-01 | 1882-06-02 | 18.0 | 0.0 | C | IRRMUNCOMINDFIRDOM | |
| 7426.0 | 1870-05-01 | 1882-06-02 | 10.78 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGWLD | |
| 11840.08127 | 1872-04-01 | 1900-12-19 | 10.78 | 0.0 | C | STO | |
| 11840.09588 | 1876-04-01 | 1900-12-19 | 10.78 | 0.0 | C | STO | |
| 11841.07445 | 1870-05-20 | 1900-12-19 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGPWR | |
| 11932.0 | 1882-09-01 | 1900-12-19 | 28.78 | 0.0 | C | STO | |
| 12677.0 | 1884-09-15 | 1900-12-19 | 10.78 | 0.0 | C | STO | |
| 13042.0 | 1885-09-15 | 1900-12-19 | 10.78 | 0.0 | C | STO | |
| 15585.0 | 1892-09-01 | 1900-12-19 | 28.78 | 0.0 | C | STO | |
| 21843.0 | 1909-10-21 | 1926-06-21 | 28.78 | 0.0 | C | STO | |
| 38819.0 | 1956-04-13 | 1961-07-17 | 28.78 | 0.0 | C | STO | |
| 41073.0 | 1962-06-15 | 1964-03-04 | 28.78 | 0.0 | C | STO |
Legal record & documents
15 decreed actions on record across
7 court cases:
CA14622, CA14183, CA3944, 89CW0132, W7955, CA14000, CA1332.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA14622 | 3 | 1964-03-04 | S |
CA14183 | 1 | 1961-07-17 | S |
CA3944 | 5 | 1900-12-19 | S |
89CW0132 | 1 | 1900-12-19 | S |
W7955 | 2 | 1882-06-02 | O |
CA14000 | 2 | 1882-06-02 | O |
CA1332 | 1 | 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 489 AF. Its most recent year on record, 2025, came in at 381 AF — 78% of that, and 5th 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 | 2,119 | 15th lowest of 15 · 433% of median | 205 | 53.3 |
| 2010 | 1,465 | 14th lowest of 15 · 300% of median | 141 | 22.9 |
| 2011 | 418 | 6th lowest of 15 · 86% of median | 66 | 9.1 |
| 2012 | 159 | 1st lowest of 15 · 32% of median | 37 | 4.2 |
| 2013 | 1,244 | 13th lowest of 15 · 254% of median | 171 | 28.8 |
| 2014 | 1,233 | 12th lowest of 15 · 252% of median | 145 | 29.4 |
| 2015 | 313 | 3rd lowest of 15 · 64% of median | 46 | 18.0 |
| 2016 | 563 | 9th lowest of 15 · 115% of median | 102 | 12.3 |
| 2017 | 769 | 10th lowest of 15 · 157% of median | 43 | 43.5 |
| 2018 | 325 | 4th lowest of 15 · 66% of median | 58 | 14.9 |
| 2019 | 468 | 7th lowest of 15 · 96% of median | 60 | 8.3 |
| 2020 | 489 | 8th lowest of 15 · 100% of median | 40 | 15.9 |
| 2021 | 816 | 11th lowest of 15 · 167% of median | 59 | 25.0 |
| 2024 | 262 | 2nd lowest of 15 · 54% of median | 39 | 15.9 |
| 2025 | 381 | 5th lowest of 15 · 78% of median | 77 | 18.9 |
Call-derived yield: senior right divertible 100.0% of a median season / 50.9% dry-year.
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 B (7/10 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 | 13 right(s), seniority decoded |
| diversion record | present | 5561 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 35% 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.