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CHAPMAN DITCH NO 2

Structure dossier · WDID 7201044 · 1 · GROVE CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 22:48 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 1900-06-01 — 749th most senior of the 2166 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: CHAPMAN DITCH NO 1 (1900-06-01). Immediately behind: CHAPMAN DITCH NO 3 (1900-06-01).

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
40013.184141900-06-011972-04-13 0.60.0 CIRRDOM 957

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 134 AF. Its most recent year on record, 2019, came in at 20 AF — 15% 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 436 15th lowest of 15 · 325% of median 366 0.6
1997 434 14th lowest of 15 · 324% of median 365 0.6
1998 362 13th lowest of 15 · 270% of median 304 0.6
1999 182 10th lowest of 15 · 136% of median 154 0.6
2000 205 12th lowest of 15 · 153% of median 173 0.6
2003 79 4th lowest of 15 · 59% of median 133 0.3
2005 194 11th lowest of 15 · 145% of median 164 0.6
2006 148 9th lowest of 15 · 110% of median 150 0.5
2009 121 6th lowest of 15 · 90% of median 123 0.5
2010 121 6th lowest of 15 · 90% of median 123 0.5
2012 134 8th lowest of 15 · 100% of median 185 0.5
2013 60 3rd lowest of 15 · 45% of median 304 0.1
2015 90 5th lowest of 15 · 67% of median 170 0.6
2018 19 1st lowest of 15 · 14% of median 53 0.3
2019 20 2nd lowest of 15 · 15% of median 18 0.6

How good is our record of it?

Grade A (9/10 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 5418 measured days; currency unknown (no data-coverage date to compare against)
record continuity continuous 77% of the irrigation seasons in 1986-2019 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.