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SAN PEDRO DITCH

Structure dossier · WDID 1900619 · 1 · RITO AZUL · DWR record

Where this page's figures come from

Generated 2026-08-27 21:26 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.

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 1897-04-30 — 125th most senior of the 735 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: SHERMAN RESERVOIR (1893-04-30). Immediately behind: MAXWELL DITCH NO 17 (1898-01-01).

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
17287.01897-04-301903-08-10 1.00.0 CIRR 120

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 123 AF. Its most recent year on record, 2000, came in at 42 AF — 34% 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)
1978 63 4th lowest of 15 · 51% of median 6 8.0
1985 452 15th lowest of 15 · 368% of median 123 2.0
1987 52 3rd lowest of 15 · 42% of median 18 2.0
1988 303 13th lowest of 15 · 246% of median 154 1.0
1989 123 8th lowest of 15 · 100% of median 58 1.5
1990 229 12th lowest of 15 · 186% of median 109 1.5
1991 72 6th lowest of 15 · 58% of median 38 1.0
1992 202 11th lowest of 15 · 164% of median 77 2.0
1993 326 14th lowest of 15 · 265% of median 230 1.0
1994 123 8th lowest of 15 · 100% of median 68 2.0
1995 163 10th lowest of 15 · 132% of median 93 2.5
1996 1 1st lowest of 15 · 1% of median 2 0.5
1997 67 5th lowest of 15 · 54% of median 44 1.0
1999 84 7th lowest of 15 · 68% of median 54 1.5
2000 42 2nd lowest of 15 · 34% of median 43 0.5

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.