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GRANT DITCH UPPER

Structure dossier · WDID 4800569 · 1 · ROARING CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 23:21 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 1912-06-30 — 81st most senior of the 143 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: BRITISH CREEK DITCH 2 (1906-07-01). Immediately behind: LILY LAKE (1912-07-01).

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
24066.228261912-06-301944-09-11 10.00.0 CIRR

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 132 AF. Its most recent year on record, 2024, came in at 58 AF — 44% of that, and 4th 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 287 15th lowest of 15 · 217% of median 61 4.2
2011 179 14th lowest of 15 · 136% of median 68 2.2
2012 132 8th lowest of 15 · 100% of median 52 2.2
2013 147 11th lowest of 15 · 111% of median 59 2.2
2014 142 9th lowest of 15 · 108% of median 58 2.0
2015 147 11th lowest of 15 · 111% of median 59 2.2
2016 146 10th lowest of 15 · 111% of median 59 2.0
2017 37 3rd lowest of 15 · 28% of median 19 2.2
2018 21 1st lowest of 15 · 16% of median 13 1.9
2019 30 2nd lowest of 15 · 23% of median 13 2.0
2020 151 13th lowest of 15 · 114% of median 58 2.7
2021 84 5th lowest of 15 · 64% of median 45 2.3
2022 108 6th lowest of 15 · 82% of median 49 2.0
2023 130 7th lowest of 15 · 98% of median 48 1.9
2024 58 4th lowest of 15 · 44% of median 31 1.5

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 1 right(s), seniority decoded
diversion record present 2188 measured days; currency unknown (no data-coverage date to compare against)
record continuity sparse 20% of the irrigation seasons in 1974-2024 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.