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CON-HOOSIER TUNNEL
Structure dossier · WDID 3604699 · 7 · BLUE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 00:08 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 1948-05-13 — 422nd most senior of the 1247 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: CON-HOOSIER SYS SPRUCE DITCH (1948-05-13). Immediately behind: GRIGGS RESERVOIR (1948-06-24).
Decreed rights (3)
| 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 |
|---|---|---|---|---|---|---|---|
| 35927.0 | 1948-05-13 | 1952-03-10 | 20.0 | 0.0 | C | IRRMUNINDFIRDOMOTH | 378-150 |
| 55882.42578 | 1966-07-29 | 2003-12-31 | 0.0 | 0.0 | C | TMX | |
| 56247.0 | 2003-12-31 | 2003-12-31 | 0.0 | 0.0 | C | TMX |
Legal record & documents
4 decreed actions on record across
3 court cases:
03CW0314, CA2782, CA1806.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
03CW0314 | 2 | 2003-12-31 | S |
CA2782 | 1 | 1952-03-10 | S |
CA1806 | 1 | 1952-03-10 | 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 8,182 AF. Its most recent year on record, 2024, came in at 8,182 AF — 100% of that, and 8th 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 | 811 | 1st lowest of 15 · 10% of median | 60 | 22.8 |
| 2011 | 3,828 | 3rd lowest of 15 · 47% of median | 362 | 42.8 |
| 2012 | 2,997 | 2nd lowest of 15 · 37% of median | 364 | 42.5 |
| 2013 | 10,218 | 13th lowest of 15 · 125% of median | 365 | 127.3 |
| 2014 | 8,706 | 11th lowest of 15 · 106% of median | 365 | 146.0 |
| 2015 | 6,402 | 4th lowest of 15 · 78% of median | 334 | 98.5 |
| 2016 | 7,889 | 6th lowest of 15 · 96% of median | 275 | 106.0 |
| 2017 | 12,401 | 15th lowest of 15 · 152% of median | 365 | 163.5 |
| 2018 | 7,513 | 5th lowest of 15 · 92% of median | 304 | 75.9 |
| 2019 | 8,651 | 10th lowest of 15 · 106% of median | 214 | 102.1 |
| 2020 | 10,843 | 14th lowest of 15 · 132% of median | 274 | 141.5 |
| 2021 | 8,113 | 7th lowest of 15 · 99% of median | 365 | 154.6 |
| 2022 | 8,427 | 9th lowest of 15 · 103% of median | 365 | 126.6 |
| 2023 | 10,215 | 12th lowest of 15 · 125% of median | 365 | 78.2 |
| 2024 | 8,182 | 8th lowest of 15 · 100% of median | 305 | 126.3 |
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 | 3 right(s), seniority decoded |
| diversion record | present | 4682 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 2010-2024 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.