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GRUNDELL BROS DITCH

Structure dossier · WDID 3700620 · 1 · GYPSUM CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 20:33 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.

Which of its rights get called out?

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 1882-05-12 — 14th most senior of the 2162 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: WHITE DITCH (1882-05-01). Immediately behind: MCBRAYER & FENNER DITCH (1883-03-01).

Decreed rights (4)

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
11820.01882-05-121889-12-17 2.00.0 CIRRMUNCOMINDRECFIRDOM 6
14463.01889-08-061889-12-17 0.50.0 CIRRMUNCOMINDRECFIRDOM 87
23802.23741914-12-311915-06-07 2.070.0 CIRRMUNCOMINDRECFIRDOM 126EX, 6EX
52960.528381994-08-311995-12-31 0.03.0 CIRRCOMRECFISFIRDOMAUGWLD

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 1,043 AF. Its most recent year on record, 2024, came in at 657 AF — 63% of that, and 3rd lowest of the 15 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)
2009 380 1st lowest of 15 · 36% of median — 144 2.0
2011 1,840 14th lowest of 15 · 176% of median — 189 9.3
2012 595 2nd lowest of 15 · 57% of median — 239 2.4
2013 1,043 8th lowest of 15 · 100% of median — 190 6.8
2014 1,798 12th lowest of 15 · 172% of median — 207 7.5
2015 1,898 15th lowest of 15 · 182% of median 661 200 7.2
2016 1,715 11th lowest of 15 · 164% of median 657 210 6.0
2017 1,671 10th lowest of 15 · 160% of median 657 207 6.9
2018 1,649 9th lowest of 15 · 158% of median 657 207 6.1
2019 1,799 13th lowest of 15 · 172% of median 657 184 8.8
2020 837 7th lowest of 15 · 80% of median 657 184 4.9
2021 657 3rd lowest of 15 · 63% of median 657 184 1.8
2022 657 3rd lowest of 15 · 63% of median 657 184 1.8
2023 657 3rd lowest of 15 · 63% of median 657 184 1.8
2024 657 3rd lowest of 15 · 63% of median 657 184 1.8

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.