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PTARMIGAN DITCH

Structure dossier · WDID 6001554 · 1 · BIG BEAR CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 19:48 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 in line

Priority 1916-07-02 — 1834th most senior of the 2893 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: BIG LAKE RESERVOIR (1900-01-01). Immediately behind: CHAMPLIN SPRING NO 1 (1926-10-22).

Decreed rights (1)

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. UnitsUsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on.Case
51864.242891916-07-021992-12-31 3.00.0 CIRR

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 49 AF. Its most recent year on record, 2024, came in at 78 AF — 159% of that, and 11th lowest of the 15 years with a recorded volume.

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 recordDays recordedPeak (cfs)
2010 51 9th lowest of 15 · 104% of median 57 0.9
2011 14 3rd lowest of 15 · 29% of median 71 0.1
2012 178 14th lowest of 15 · 363% of median 168 2.0
2013 102 13th lowest of 15 · 208% of median 66 1.6
2014 273 15th lowest of 15 · 557% of median 96 2.0
2015 12 2nd lowest of 15 · 24% of median 81 0.1
2016 9 1st lowest of 15 · 18% of median 38 0.2
2017 27 6th lowest of 15 · 55% of median 38 0.5
2018 49 8th lowest of 15 · 100% of median 73 0.7
2019 91 12th lowest of 15 · 186% of median 95 1.3
2020 16 4th lowest of 15 · 33% of median 46 0.2
2021 33 7th lowest of 15 · 67% of median 86 0.3
2022 64 10th lowest of 15 · 131% of median 76 0.9
2023 21 5th lowest of 15 · 43% of median 48 0.3
2024 78 11th lowest of 15 · 159% of median 88 1.5

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.