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CARR TYLER DITCH

Structure dossier · WDID 0600520 · DITCH · BOULDER CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 21:10 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (96d5528) — 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: no administrative call record for this basin.

Where it sits in line

Priority 1861-06-01 — 47th most senior of the 1867 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: BOULDER WELD CTY DITCH (1861-06-01). Immediately behind: HILLCREST RES (1862-04-01).

On MAINSTEM at river mile 28.2, it is 64th of 78 down the reach. Immediately upstream: KEN-REG RES. Immediately downstream: NELSON LAKE NO 1.

Position on the modelled network, not a claim about whose water this is — a stream carries water from many rights at once, and diverted water returns to it.

Decreed rights (3)

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
4170.01861-06-011882-06-02 1.50.0 CIRR
5266.01864-06-011882-06-02 42.80.0 ASTOIRRRECFISRCHWLD
5266.01864-06-011882-06-02 33.730.0 CSTOIRRRECFISRCHWLD

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 247 AF. Its most recent year on record, 2025, came in at 206 AF — 83% of that, and 6th 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)
2006 423 12th lowest of 15 · 171% of median 206 3.0
2007 323 11th lowest of 15 · 131% of median 166 2.5
2008 18 1st lowest of 15 · 7% of median 4 4.0
2009 244 7th lowest of 15 · 99% of median 40 6.0
2011 169 4th lowest of 15 · 68% of median 57 2.0
2014 775 14th lowest of 15 · 314% of median 88 14.8
2015 429 13th lowest of 15 · 174% of median 67 10.0
2016 170 5th lowest of 15 · 69% of median 6 23.1
2017 272 9th lowest of 15 · 110% of median 21 30.0
2018 138 3rd lowest of 15 · 56% of median 11 14.6
2019 1,083 15th lowest of 15 · 438% of median 46 31.5
2022 289 10th lowest of 15 · 117% of median 18 24.0
2023 84 2nd lowest of 15 · 34% of median 5 14.1
2024 247 8th lowest of 15 · 100% of median 11 35.5
2025 206 6th lowest of 15 · 83% of median 12 32.4

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.