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MACK DITCH 1
Structure dossier · WDID 8000662 · DITCH · NORTH FORK SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 20:39 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (e70d0b5) — every figure regenerates from this named code version and data image.
Current administration
● In priority — no active call senior to this structure's rights affects its district (23 active call(s) checked).
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 1863-05-01 — 113th most senior of the 21881 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: 8000661 (1863-05-01). Immediately behind: 8000665 (1863-05-01).
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. | Units | UsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 4869.0 | 1863-05-01 | 1913-05-22 | 1.0 | 0.0 | C | COM |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 226 AF. Its most recent year on record, 2025, came in at 267 AF — 118% of that, and 10th 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) |
|---|---|---|---|---|
| 2011 | 200 | 5th lowest of 15 · 88% of median | 112 | 1.0 |
| 2012 | 274 | 11th lowest of 15 · 121% of median | 146 | 1.0 |
| 2013 | 131 | 1st lowest of 15 · 58% of median | 67 | 1.0 |
| 2014 | 151 | 2nd lowest of 15 · 67% of median | 68 | 1.2 |
| 2015 | 182 | 4th lowest of 15 · 80% of median | 95 | 1.0 |
| 2016 | 300 | 14th lowest of 15 · 133% of median | 153 | 1.0 |
| 2017 | 250 | 9th lowest of 15 · 111% of median | 129 | 1.0 |
| 2018 | 212 | 7th lowest of 15 · 94% of median | 110 | 1.0 |
| 2019 | 204 | 6th lowest of 15 · 90% of median | 105 | 1.0 |
| 2020 | 162 | 3rd lowest of 15 · 72% of median | 90 | 1.0 |
| 2021 | 226 | 8th lowest of 15 · 100% of median | 138 | 1.0 |
| 2022 | 351 | 15th lowest of 15 · 155% of median | 179 | 1.0 |
| 2023 | 285 | 13th lowest of 15 · 126% of median | 114 | 1.6 |
| 2024 | 274 | 11th lowest of 15 · 121% of median | 140 | 1.0 |
| 2025 | 267 | 10th lowest of 15 · 118% of median | 150 | 1.0 |
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.