Hydrohistorian

← My Water  ·  Print / save as PDF

MILLIGAN NO 1 DITCH

Structure dossier · WDID 3200628 · 1 · ALKALI CANYON · DWR record

Where this page's figures come from

Generated 2026-08-27 23:36 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (f6d7fdc) — 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 1932-06-22 — 194th most senior of the 638 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: GREENLEE DITCH (1932-06-21). Immediately behind: MILLIGAN NO 3 DITCH (1932-06-22).

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
30123.01932-06-221962-08-14 0.50.0 CIRR 62-64

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 19 AF. Its most recent year on record, 2016, came in at 4 AF — 21% of that, and 3rd 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 13 7th lowest of 15 · 68% of median 41 0.2
2003 20 9th lowest of 15 · 105% of median 110 0.1
2004 66 15th lowest of 15 · 347% of median 176 0.5
2005 46 13th lowest of 15 · 242% of median 117 0.3
2006 43 12th lowest of 15 · 226% of median 111 0.2
2007 31 10th lowest of 15 · 163% of median 95 0.3
2008 54 14th lowest of 15 · 284% of median 84 0.5
2009 41 11th lowest of 15 · 216% of median 80 0.5
2010 4 3rd lowest of 15 · 21% of median 28 0.1
2011 10 6th lowest of 15 · 53% of median 58 0.1
2012 19 8th lowest of 15 · 100% of median 90 0.2
2013 4 3rd lowest of 15 · 21% of median 32 0.1
2014 0 1st lowest of 15 · 0% of median 12 0.0
2015 0 1st lowest of 15 · 0% of median 9 0.0
2016 4 3rd lowest of 15 · 21% of median 19 0.2

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 1223 measured days; currency unknown (no data-coverage date to compare against)
record continuity sparse 37% of the irrigation seasons in 2001-2016 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.