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THOMAS LUNNEY DITCH
Structure dossier · WDID 4300969 · 1 · COAL CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:10 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 1883-05-14 — 8th most senior of the 3293 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: COAL CREEK DITCH 1 (1883-05-14). Immediately behind: P & L DITCH (1883-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 12187.0 | 1883-05-14 | 1890-10-22 | 0.0 | 0.0 | C | IRR | 4 |
| 12919.0 | 1885-05-15 | 1890-10-22 | 0.0 | 0.0 | C | IRR | 23 |
| 14010.0 | 1888-05-10 | 1890-10-22 | 0.0 | 0.0 | C | IRR | 99 |
| 21429.15432 | 1892-04-01 | 1908-09-03 | 0.8 | 0.0 | C | IRR | 172 |
| 32172.19889 | 1904-06-15 | 1942-05-26 | 2.1 | 0.0 | C | IRR | 416D |
Legal record & documents
5 decreed actions on record across
3 court cases:
CA0624, 09/03/1908, W2151-73.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA0624 | 1 | 1942-05-26 | S |
09/03/1908 | 1 | 1908-09-03 | S |
W2151-73 | 3 | 1890-10-22 | 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 508 AF. Its most recent year on record, 2025, came in at 111 AF — 22% of that, and 3rd 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) |
|---|---|---|---|---|
| 2007 | 611 | 10th lowest of 15 · 120% of median | 89 | 6.0 |
| 2008 | 767 | 12th lowest of 15 · 151% of median | 91 | 6.0 |
| 2009 | 801 | 13th lowest of 15 · 158% of median | 85 | 5.9 |
| 2010 | 502 | 7th lowest of 15 · 99% of median | 84 | 6.0 |
| 2011 | 1,037 | 14th lowest of 15 · 204% of median | 100 | 8.0 |
| 2012 | 508 | 8th lowest of 15 · 100% of median | 178 | 4.0 |
| 2013 | 390 | 6th lowest of 15 · 77% of median | 98 | 5.9 |
| 2014 | 1,259 | 15th lowest of 15 · 248% of median | 198 | 5.9 |
| 2015 | 329 | 4th lowest of 15 · 65% of median | 94 | 3.0 |
| 2016 | 716 | 11th lowest of 15 · 141% of median | 69 | 5.7 |
| 2017 | 365 | 5th lowest of 15 · 72% of median | 79 | 4.9 |
| 2022 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2023 | 0 | 1st lowest of 15 · 0% of median | 2 | 0.0 |
| 2024 | 549 | 9th lowest of 15 · 108% of median | 134 | 2.1 |
| 2025 | 111 | 3rd lowest of 15 · 22% of median | 111 | 0.5 |
Trends for this structure
Recorded use is falling over its last 15 recorded years (-37 AF/yr, Mann-Kendall p=0.033).
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 | 5 right(s), seniority decoded |
| diversion record | present | 4859 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 36% of the irrigation seasons in 1962-2025 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.