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RIGGS DITCH NO 1

Structure dossier · WDID 1200513 · 1 · FOURMILE CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 20:59 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 1874-05-31 — 173rd most senior of the 1967 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: GORMAN DITCH NO 2 (1874-05-20). Immediately behind: WATSON DITCH NO 2 (1874-05-31).

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
8917.01874-05-311894-02-03 2.00.0 CIRR 139

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 111 AF. Its most recent year on record, 2025, came in at 45 AF — 40% of that, and 5th 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)
2002 2 3rd lowest of 15 · 2% of median 2 1.0
2003 186 11th lowest of 15 · 168% of median 95 1.0
2011 48 6th lowest of 15 · 43% of median 18 1.5
2014 114 9th lowest of 15 · 103% of median 41 1.6
2015 111 8th lowest of 15 · 100% of median 82 1.0
2016 396 14th lowest of 15 · 357% of median 124 2.0
2017 492 15th lowest of 15 · 443% of median 137 2.0
2018 0 1st lowest of 15 · 0% of median 18 0.0
2019 167 10th lowest of 15 · 150% of median 63 2.0
2020 0 1st lowest of 15 · 0% of median 22 0.0
2021 52 7th lowest of 15 · 47% of median 20 2.0
2022 35 4th lowest of 15 · 32% of median 16 2.0
2023 186 11th lowest of 15 · 168% of median 56 2.0
2024 260 13th lowest of 15 · 234% of median 86 1.7
2025 45 5th lowest of 15 · 40% of median 36 0.8

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.