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CLEAR CREEK RESERVOIR

Structure dossier · WDID 1103504 · RESERVOIR · CLEAR CREEK · DWR record

Clear Creek Reservoir is a reservoir on Clear Creek in Colorado. This page is its public record: the water it has a right to, whether it may take it today, and its history, compiled from the Colorado Division of Water Resources.

Source DWR administrative record · verify at DWR structure ↗ Source DWR administrative record · verify at DWR diversion records ↗ Source Our computation, scored against a reference · scored against DWR's call analysis, see /methods

Where this page's figures come from

Generated 2026-10-16 05:02 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260928 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (dd58e60) — every figure regenerates from this named code version and data image.

The record and the river

Where this structure is measured

GageFlowing nowRecordHow we know
CLEAR CREEK RESERVOIR CLRRESCO — — co-located, 35 m
CLEAR CREEK BELOW CLEAR CREEK RESERVOIR CCBCCRCO 51.8 cfs 1953–2026, 19,398 days co-located, 167 m

A green link is DWR's own: either its telemetry inventory maps this WDID to that station, or the station is named for this WDID (0700553 → 0700553A). An amber one is ours — the station sits within 250 m and shares a distinctive word with this structure's name, which is a strong hint rather than a DWR statement that this gage meters this structure. Wrong? Tell us.

In short

CLEAR CREEK RESERVOIR holds 29 decreed rights on CLEAR CREEK. No active call senior to its rights reaches its district today (20 active calls checked), so it is in priority now. 17 further calls state no district and sit outside this one, so they are counted here rather than assumed either way. That is today's position; the weeks ahead cannot be projected for it: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it. In a median year over its last 12 recorded years it diverts 3,455 acre-feet. It was a party to 13 court cases that also touched 26 other structures.

Assembled from the figures on this page — every number above is checked against them before it is shown (7 checked). The detail, with its method, is in the cards below.

Download this structure

Everything on this page as data you can work with — and a README that makes it citable: the HydroBase snapshot it was built from, the build commit, what every column means, the method behind each derived figure, and that method's stated limits.

⇩ Full record (.zip) Print / save as PDF

Or one table at a time: rights.csv · annual_use.csv · curtailment_now.csv · court_cases.csv · co_parties.csv · call_climatology.csv

What is in the bundle
  • rights.csv — every decreed right, most senior first, with admin numbers, dates, amounts, uses and case numbers.
  • annual_use.csv — recorded diversion by year, with releases accounted separately.
  • curtailment_now.csv — each right's current priority status and how often it was out across analog years.
  • court_cases.csv — the cases attached to its rights.
  • co_parties.csv — the other structures that were parties to those cases. Not available anywhere else.
  • call_climatology.csv — how often each right has been out of priority by week of season, with confidence intervals and the seasons the record could actually judge.
  • README.txt — provenance, methods, limits, disclaimer, and links back to DWR's own records for verification.

Where it sits

Location as DWR records it (storage). Faint dots are the neighbouring water; click any to open it.

Dam safety

⚠ Under an active storage restriction from DWR’s Dam Safety branch.

The State Engineer limits what this dam may impound. DWR publishes no safe-storage figure for it. A low reading on this reservoir can be an order, not a drought; read any storage or fill figure on this page alongside it.

Dam CLEAR CREEK (completed 1910)
Hazard class High
Condition at last inspection Unsatisfactory (2025-06-30)
Storage restriction Yes
Normal storage 11,500 AF
Physical status Active
Emergency action plan Yes

Source: DWR Dam Safety’s jurisdictional-dam inventory (damsafety/damsafetydaminfojd), refreshed weekly. DWR’s record for this dam carries no WDID and no matched NID id, so it is joined by name and position: “CLEAR CREEK” 0.041 mi away. More than half of Colorado’s jurisdictional dams can be reached no other way; judge the match before relying on it. Hazard class describes the consequence of failure, not the likelihood of it. DWR’s dam record.

Current administration

● In priority — no active call senior to this structure's rights affects its district (20 active call(s) checked).

17 further calls state no district and sit outside this one, so they are counted here rather than assumed either way.

Which of its rights are out of priority?

The outlook for the weeks ahead is not computable for this structure: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it. Today’s position is a separate question, and it is answered in Current administration above — that screen reads the district’s active calls and needs no reference gage.

Where it sits in line

Priority 1881-03-10 — 164th most senior of the 1491 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: TWIN LAKES RESERVOIR (1881-03-10). Immediately behind: PAINE DITCH (1881-03-15).

Decreed rights (29)

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. Alt-pointAn absolute amount decreed at another structure that may be diverted here instead -- an alternate point of diversion or an exchange. DWR calls this the APEX amount; a right showing 0.0 absolute but an alt-point amount is exercised here under another structure's decree. Decreed forWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on.Case
11392.00000 1881-03-101890-06-19 0.0 cfs 0.0 2.0 cfs Irrigation, Municipal +4 81
11428.00000 1881-04-151890-06-19 0.0 cfs 0.0 1.6 cfs Irrigation, Municipal +4 86
11443.00000 1881-04-301890-06-19 0.0 cfs 0.0 0.8 cfs Irrigation, Municipal +4 87
11474.00000 1881-05-311890-06-19 0.0 cfs 0.0 1.3 cfs Irrigation, Municipal +4 90
11657.00000 1881-11-301890-06-19 0.0 cfs 0.0 1.0 cfs Irrigation, Municipal +4 95
11808.00000 1882-04-301890-06-19 0.0 cfs 0.0 1.6 cfs Irrigation, Municipal +4 110
22888.19155 1902-06-121913-07-14 9401.0 AF 0.0 — Irrigation, Municipal +1 R-5
22888.22146 1910-08-201913-07-14 2038.0 AF 0.0 — Irrigation, Municipal +1 R-6
27899.00000 1926-05-211984-12-31 0.0 cfs 0.0 89.01 cfs Municipal, All beneficial uses 84CW0178
37957.00000 1953-12-031984-12-31 0.0 cfs 0.0 46.31 cfs Municipal, All beneficial uses 84CW0178
38311.00000 1954-11-221984-12-31 0.0 cfs 0.0 350.87 cfs Municipal, All beneficial uses 84CW0178
38364.00000 1955-01-141984-12-31 0.0 cfs 0.0 83.61 cfs Municipal, All beneficial uses 84CW0178
39152.00000 1957-03-121984-12-31 0.0 cfs 0.0 200.0 cfs Municipal, All beneficial uses 84CW0178
45003.00000 1973-03-191984-12-31 0.0 cfs 0.0 49.17 cfs Municipal, All beneficial uses 84CW0178
46159.00000 1976-05-181984-12-31 0.0 cfs 0.0 6.92 cfs Municipal 84CW0177A
48942.27899 1926-05-211984-12-31 0.0 cfs 0.0 19.49 cfs Municipal, All beneficial uses 84CW0178
48942.37957 1953-12-031984-12-31 0.0 cfs 0.0 13.69 cfs Municipal, All beneficial uses 84CW0178, 94CW0009
48942.38311 1954-11-221984-12-31 0.0 cfs 0.0 97.25 cfs Municipal, All beneficial uses 84CW0178, 01CW0068
48942.38364 1955-01-141984-12-31 0.0 cfs 0.0 101.39 cfs Municipal, All beneficial uses 84CW0178
48942.45003 1973-03-191984-12-31 0.0 cfs 0.0 150.83 cfs Municipal, All beneficial uses 84CW0178
48942.46159 1976-05-181984-12-31 0.0 cfs 0.0 104.24 cfs Municipal 94CW0008, 84CW0177B +2
48942.47951 1981-04-141984-12-31 0.0 cfs 0.0 1512.56 cfs Irrigation, Municipal +3 18CW3042, 84CW0064
48942.48175 1981-11-241984-12-31 0.0 cfs 0.0 2181.04 cfs All beneficial uses 84CW0203A, 84CW0203B +1
49673.49387 1985-03-201986-12-31 0.0 cfs 0.0 2181.04 cfs All beneficial uses 86CW0118A, 86CW0118B
50393.00000 1987-12-211987-12-31 0.0 cfs 0.0 250.0 cfs All beneficial uses 87CW0063, 00CW0028
55152.55133 2000-12-122001-12-31 0.0 cfs 0.0 33.4 cfs Storage, Irrigation +8 01CW0152
56247.55049 2000-09-192004-12-31 0.0 AF 18561.0 AF — Storage, All beneficial uses 04CW0130
58220.00000 2009-05-262009-12-31 0.0 cfs 0.0 3.66 cfs Irrigation, Municipal +4 09CW0073
59535.49387 1985-03-202011-12-31 0.0 cfs 0.0 50.0 cfs All beneficial uses 11CW0062

Amounts marked cfs are flow rates; AF are stored volumes (storage rights are decreed in acre-feet). An absolute amount of 0.0 beside an alt-point amount is not a dead right: the water is decreed at another structure, and that row records permission to divert it here instead (an alternate point or exchange). A case listing several numbers reflects the original decree plus later change cases.

Recorded use (last 13 years on record)

Years far under the decreed amount? That gap has a name — paper water vs. wet water, explained on this structure.

In a median year this structure has a recorded diversion of 3,455 AF. Its most recent year on record, 2025, came in at 223 AF — 6% of that, and 1st lowest of the 12 years with a recorded volume.

This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.

YearDiverted (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 recordReleased (AF)Days recordedPeak (cfs)
1971 44,070 12th lowest of 12 · 1276% of median — 152 363.5
2014 — no recorded volume 1,606 0 —
2015 1,233 2nd lowest of 12 · 36% of median 11,355 91 22.6
2016 4,767 8th lowest of 12 · 138% of median 0 182 430.5
2017 7,551 11th lowest of 12 · 219% of median — 304 248.9
2018 1,366 3rd lowest of 12 · 40% of median 2,440 183 15.9
2019 5,136 9th lowest of 12 · 149% of median 4,522 153 421.2
2020 4,056 7th lowest of 12 · 117% of median 4,420 305 504.2
2021 2,239 4th lowest of 12 · 65% of median — 182 105.9
2022 2,585 5th lowest of 12 · 75% of median — 365 105.9
2023 6,516 10th lowest of 12 · 189% of median — 365 411.3
2024 2,854 6th lowest of 12 · 83% of median — 305 507.8
2025 223 1st lowest of 12 · 6% of median — 214 5.6

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
CheckStateDetail
identity complete name, type, and water source all on file
decreed rights on file 29 right(s), seniority decoded
diversion record present 2801 measured days; currency unknown (no data-coverage date to compare against)
record continuity sparse 24% of the irrigation seasons in 1971-2025 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.

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