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EXON DITCH
Structure dossier · WDID 3400524 · 1 · MANCOS RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:16 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (f6d7fdc) — 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 1883-04-25 — 191st most senior of the 495 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: MANCOS CANYON DITCH PUMP (1882-05-15). Immediately behind: SAMSON DITCH (1884-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 12168.0 | 1883-04-25 | 1893-04-28 | 1.167 | 0.0 | C | IRR | M-15 |
| 14015.0 | 1888-05-15 | 1893-04-28 | 0.667 | 0.0 | C | IRR | M-35 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 149 AF. Its most recent year on record, 2025, came in at 72 AF — 48% of that, and 3rd 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 | 275 | 12th lowest of 15 · 185% of median | 129 | 1.7 |
| 2012 | 263 | 11th lowest of 15 · 176% of median | 112 | 1.8 |
| 2013 | 180 | 9th lowest of 15 · 121% of median | 86 | 1.8 |
| 2014 | 149 | 8th lowest of 15 · 100% of median | 109 | 1.5 |
| 2015 | 336 | 13th lowest of 15 · 226% of median | 137 | 2.4 |
| 2016 | 434 | 15th lowest of 15 · 291% of median | 130 | 2.6 |
| 2017 | 380 | 14th lowest of 15 · 255% of median | 143 | 2.1 |
| 2018 | 98 | 6th lowest of 15 · 66% of median | 94 | 1.2 |
| 2019 | 190 | 10th lowest of 15 · 128% of median | 161 | 1.1 |
| 2020 | 86 | 5th lowest of 15 · 58% of median | 130 | 0.8 |
| 2021 | 82 | 4th lowest of 15 · 55% of median | 87 | 1.1 |
| 2022 | 116 | 7th lowest of 15 · 78% of median | 115 | 1.2 |
| 2023 | 59 | 1st lowest of 15 · 40% of median | 51 | 0.8 |
| 2024 | 69 | 2nd lowest of 15 · 46% of median | 62 | 1.0 |
| 2025 | 72 | 3rd lowest of 15 · 48% of median | 49 | 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.