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IRRAWADDY NO 2 DITCH

Structure dossier · WDID 5300642 · 1 · IRRAWADDY CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 20:30 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.

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 1915-05-01 — 294th 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: KEEP DITCH (1915-01-11). Immediately behind: TUCKER DITCH (1915-07-10).

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
33023.238611915-05-011956-02-07 2.080.0 CIRR 308

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 47 AF. Its most recent year on record, 2020, came in at 13 AF — 28% of that, and 2nd 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)
1996 87 15th lowest of 15 · 185% of median 68 0.8
1997 64 13th lowest of 15 · 136% of median 66 0.5
1998 60 12th lowest of 15 · 128% of median 61 0.5
1999 30 5th lowest of 15 · 64% of median 31 0.5
2000 56 10th lowest of 15 · 119% of median 57 0.5
2001 51 9th lowest of 15 · 108% of median 52 0.5
2005 31 6th lowest of 15 · 66% of median 58 0.5
2006 15 3rd lowest of 15 · 32% of median 77 0.1
2014 9 1st lowest of 15 · 19% of median 89 0.1
2015 72 14th lowest of 15 · 153% of median 163 0.3
2016 56 10th lowest of 15 · 119% of median 135 0.3
2017 47 8th lowest of 15 · 100% of median 159 0.2
2018 26 4th lowest of 15 · 55% of median 147 0.1
2019 41 7th lowest of 15 · 87% of median 98 0.2
2020 13 2nd lowest of 15 · 28% of median 76 0.1

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.