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GANNON DITCH

Structure dossier · WDID 5300580 · 1 · SWEETWATER CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 21:07 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 1905-03-21 — 169th most senior of the 1231 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: HENRY NO 2 DITCH (1904-05-15). Immediately behind: CAMP CREEK DITCH (1905-04-30).

Decreed rights (6)

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
20427.201681905-03-211907-12-09 0.50.0 CIRR 197
33023.29751931-06-151956-02-07 0.990.0 CIRRDOM 330
33024.01940-06-011956-02-07 1.550.0 CIRR 345
36743.01950-08-071956-02-07 0.90.0 CIRRDOM 364
37065.01951-06-251956-02-07 1.350.0 CIRRDOM 368
37569.01952-11-101956-02-07 1.220.0 CIRR 394

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 638 AF. Its most recent year on record, 2024, came in at 1,248 AF — 196% of that, and 15th 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)
2008 387 2nd lowest of 15 · 61% of median 131 1.5
2009 378 1st lowest of 15 · 59% of median 128 1.5
2010 638 8th lowest of 15 · 100% of median 156 3.6
2011 595 7th lowest of 15 · 93% of median 170 3.5
2012 575 6th lowest of 15 · 90% of median 132 2.5
2013 469 3rd lowest of 15 · 74% of median 90 3.6
2014 510 5th lowest of 15 · 80% of median 81 3.8
2015 1,143 13th lowest of 15 · 179% of median 200 3.8
2016 1,131 12th lowest of 15 · 177% of median 234 4.5
2017 1,207 14th lowest of 15 · 189% of median 312 4.7
2018 945 10th lowest of 15 · 148% of median 304 3.1
2019 473 4th lowest of 15 · 74% of median 185 5.3
2020 994 11th lowest of 15 · 156% of median 214 4.5
2023 873 9th lowest of 15 · 137% of median 168 2.7
2024 1,248 15th lowest of 15 · 196% of median 156 5.1

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.