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HARPER IRR SYSTEM NO 1

Structure dossier · WDID 3001330 · 8 · SALT CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 23:14 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 1978-11-01 — 1023rd most senior of the 2277 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: COLORADO TIMBERLINE SPR (1978-09-15). Immediately behind: HELMERICKS NORTH DAM (1978-11-06).

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
47056.01978-11-011978-12-31 0.50.0 CIRRSTK

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 21 AF. Its most recent year on record, 2025, came in at 21 AF — 100% of that, and 8th 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)
2011 18 5th lowest of 15 · 86% of median 64 0.3
2012 46 15th lowest of 15 · 219% of median 156 0.2
2013 34 14th lowest of 15 · 162% of median 155 0.3
2014 11 2nd lowest of 15 · 52% of median 74 0.1
2015 16 4th lowest of 15 · 76% of median 51 0.3
2016 18 5th lowest of 15 · 86% of median 142 0.1
2017 19 7th lowest of 15 · 90% of median 143 0.1
2018 13 3rd lowest of 15 · 62% of median 89 0.1
2019 23 9th lowest of 15 · 110% of median 81 0.2
2020 26 12th lowest of 15 · 124% of median 93 0.3
2021 8 1st lowest of 15 · 38% of median 55 0.2
2022 23 9th lowest of 15 · 110% of median 125 0.2
2023 31 13th lowest of 15 · 148% of median 141 0.2
2024 25 11th lowest of 15 · 119% of median 117 0.2
2025 21 8th lowest of 15 · 100% of median 129 0.1

How good is our record of it?

Grade B (8/10 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 1 right(s), seniority decoded
diversion record present 4265 measured days; currency unknown (no data-coverage date to compare against)
record continuity patchy 44% of the irrigation seasons in 1980-2025 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.