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MALLON DITCH NO 2
Structure dossier · WDID 4700748 · 1 · ROARING FORK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:23 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
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 1900-04-15 — 294th most senior of the 1262 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: CARPENTER DITCH 2 (1899-10-15). Immediately behind: WARD DITCH 3 (1900-05-12).
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 |
|---|---|---|---|---|---|---|---|
| 18367.0 | 1900-04-15 | 1902-04-23 | 80.0 | 0.0 | C | IRR | 153(135) |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 3,716 AF. Its most recent year on record, 2025, came in at 1,561 AF — 42% of that, and 1st 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 | 4,013 | 9th lowest of 15 · 108% of median | 48 | 71.0 |
| 2010 | 2,934 | 3rd lowest of 15 · 79% of median | 35 | 72.0 |
| 2012 | 3,483 | 5th lowest of 15 · 94% of median | 135 | 60.1 |
| 2013 | 2,406 | 2nd lowest of 15 · 65% of median | 64 | 28.5 |
| 2014 | 3,525 | 6th lowest of 15 · 95% of median | 65 | 57.5 |
| 2015 | 6,307 | 15th lowest of 15 · 170% of median | 61 | 65.4 |
| 2016 | 4,614 | 10th lowest of 15 · 124% of median | 61 | 50.6 |
| 2017 | 3,527 | 7th lowest of 15 · 95% of median | 67 | 58.8 |
| 2018 | 4,662 | 11th lowest of 15 · 126% of median | 64 | 64.0 |
| 2019 | 3,716 | 8th lowest of 15 · 100% of median | 35 | 76.5 |
| 2021 | 5,939 | 13th lowest of 15 · 160% of median | 47 | 70.0 |
| 2022 | 5,990 | 14th lowest of 15 · 161% of median | 66 | 65.0 |
| 2023 | 3,343 | 4th lowest of 15 · 90% of median | 62 | 65.0 |
| 2024 | 4,814 | 12th lowest of 15 · 130% of median | 52 | 65.0 |
| 2025 | 1,561 | 1st lowest of 15 · 42% of median | 81 | 9.8 |
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.