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B A & B DITCH NO 1
Structure dossier · WDID 4300511 · 1 · FLAG CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:27 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 in line
Priority 1886-05-16 — 51st most senior of the 3293 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: NICHOLS DITCH (1886-05-10). Immediately behind: COAL CREEK VALLEY DITCH (1886-05-27).
Decreed rights (4)
| 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 |
|---|---|---|---|---|---|---|---|
| 13285.0 | 1886-05-16 | 1889-05-10 | 1.5 | 0.0 | C | IRR | 42 |
| 14010.0 | 1888-05-10 | 1889-05-10 | 2.3 | 0.0 | C | IRR | 100 |
| 25090.2 | 1904-10-04 | 1918-09-12 | 2.0 | 0.0 | C | IRRDOM | 223 |
| 32172.23496 | 1914-05-01 | 1942-05-26 | 2.75 | 0.0 | C | IRR | 455C |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 1,214 AF. Its most recent year on record, 2025, came in at 1,143 AF — 94% of that, and 7th 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) |
|---|---|---|---|---|
| 2009 | 1,746 | 11th lowest of 15 · 144% of median | 188 | 6.0 |
| 2010 | 1,214 | 8th lowest of 15 · 100% of median | 166 | 8.6 |
| 2011 | 1,947 | 14th lowest of 15 · 160% of median | 169 | 8.6 |
| 2012 | 1,336 | 9th lowest of 15 · 110% of median | 153 | 8.6 |
| 2013 | 1,372 | 10th lowest of 15 · 113% of median | 141 | 8.6 |
| 2014 | 1,752 | 12th lowest of 15 · 144% of median | 134 | 8.6 |
| 2016 | 1,083 | 6th lowest of 15 · 89% of median | 79 | 7.0 |
| 2017 | 380 | 2nd lowest of 15 · 31% of median | 48 | 4.2 |
| 2018 | 717 | 3rd lowest of 15 · 59% of median | 96 | 6.7 |
| 2019 | 843 | 4th lowest of 15 · 69% of median | 74 | 8.0 |
| 2021 | 1,966 | 15th lowest of 15 · 162% of median | 151 | 10.7 |
| 2022 | 1,916 | 13th lowest of 15 · 158% of median | 170 | 8.5 |
| 2023 | 879 | 5th lowest of 15 · 72% of median | 153 | 3.7 |
| 2024 | 127 | 1st lowest of 15 · 10% of median | 100 | 0.7 |
| 2025 | 1,143 | 7th lowest of 15 · 94% of median | 127 | 5.7 |
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.