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KNORR NO 1 DITCH
Structure dossier · WDID 3600689 · 1 · BLACK CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 20:35 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.
Which of its rights get called out?
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 1892-06-30 — 121st most senior of the 1247 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: SOUTH ACORN DITCH (1892-06-01). Immediately behind: RICE DITCH (1893-05-03).
Decreed rights (2)
| 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. | Units | UsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 15522.0 | 1892-06-30 | 1910-03-02 | 3.58 | 0.0 | C | IRR | 88 |
| 18079.0 | 1899-07-01 | 1910-03-02 | 3.0 | 0.0 | C | IRR | 116 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 434 AF. Its most recent year on record, 2024, came in at 166 AF — 38% of that, and 4th lowest of the 15 years with a recorded volume.
| Year | Diverted (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 record | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 2010 | 244 | 6th lowest of 15 · 56% of median | 58 | 3.5 |
| 2011 | 660 | 10th lowest of 15 · 152% of median | 139 | 6.6 |
| 2012 | 746 | 12th lowest of 15 · 172% of median | 135 | 6.6 |
| 2013 | 832 | 13th lowest of 15 · 192% of median | 114 | 6.6 |
| 2014 | 862 | 14th lowest of 15 · 199% of median | 101 | 6.5 |
| 2015 | 1,252 | 15th lowest of 15 · 288% of median | 179 | 6.6 |
| 2016 | 703 | 11th lowest of 15 · 162% of median | 95 | 6.5 |
| 2017 | 599 | 9th lowest of 15 · 138% of median | 114 | 6.0 |
| 2018 | 364 | 7th lowest of 15 · 84% of median | 120 | 5.1 |
| 2019 | 434 | 8th lowest of 15 · 100% of median | 89 | 5.0 |
| 2020 | 194 | 5th lowest of 15 · 45% of median | 78 | 3.7 |
| 2021 | 120 | 2nd lowest of 15 · 28% of median | 60 | 3.5 |
| 2022 | 154 | 3rd lowest of 15 · 36% of median | 98 | 2.0 |
| 2023 | 119 | 1st lowest of 15 · 27% of median | 89 | 1.5 |
| 2024 | 166 | 4th lowest of 15 · 38% of median | 56 | 2.8 |
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.