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NORTH FORK MASON DITCH

Structure dossier · WDID 5300744 · 1 · MASON CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 22:51 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 1903-05-13 — 162nd 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: MIDDLE FORK MASON CR D (1903-05-13). Immediately behind: MALONEY NO 3 DITCH (1903-06-01).

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
20427.19491903-05-131907-12-09 1.00.0 CIRR 189

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 94 AF. Its most recent year on record, 2012, came in at 129 AF — 137% of that, and 10th 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)
1994 0 1st lowest of 15 · 0% of median 1 0.0
1996 167 14th lowest of 15 · 178% of median 85 1.0
1997 139 11th lowest of 15 · 148% of median 65 1.2
1998 146 12th lowest of 15 · 155% of median 61 1.2
1999 98 9th lowest of 15 · 104% of median 67 0.8
2000 32 2nd lowest of 15 · 34% of median 17 1.0
2001 94 8th lowest of 15 · 100% of median 62 1.0
2005 45 4th lowest of 15 · 48% of median 58 0.5
2006 38 3rd lowest of 15 · 40% of median 77 0.2
2007 57 5th lowest of 15 · 61% of median 83 0.3
2008 72 7th lowest of 15 · 77% of median 92 0.5
2009 63 6th lowest of 15 · 67% of median 65 0.5
2010 149 13th lowest of 15 · 158% of median 83 1.0
2011 203 15th lowest of 15 · 216% of median 86 1.5
2012 129 10th lowest of 15 · 137% of median 73 1.0

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 1967 measured days; currency unknown (no data-coverage date to compare against)
record continuity sparse 25% of the irrigation seasons in 1975-2012 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.