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M E AND M DITCH
Structure dossier · WDID 7800580 · 1 · PIEDRA RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 22:03 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 1868-03-02 — 1st most senior of the 366 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 behind: SP-1502 (1868-03-02).
Decreed rights (3)
| 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 |
|---|---|---|---|---|---|---|---|
| 6636.0 | 1868-03-02 | 1976-12-31 | 0.0 | 0.0 | C | IRR | |
| 28645.18058 | 1899-06-10 | 1962-04-19 | 7.0 | 0.0 | C | IRR | #231 |
| 41016.3485 | 1945-06-01 | 1968-12-19 | 5.0 | 0.0 | C | IRRSTK | 68-96 |
Legal record & documents
3 decreed actions on record across
3 court cases:
W1603-76C, CA0308-D, CA0308.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W1603-76C | 1 | 1976-12-31 | O |
CA0308-D | 1 | 1968-12-19 | S |
CA0308 | 1 | 1962-04-19 | S |
DWR's own records for this structure: net amounts · transactions & adjudication history · scanned decrees (search a case number there for the imaged document). On this site: the district's full legal picture →
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 1,005 AF. Its most recent year on record, 2025, came in at 329 AF — 33% 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) |
|---|---|---|---|---|
| 2011 | 660 | 3rd lowest of 15 · 66% of median | 99 | 5.1 |
| 2012 | 1,640 | 15th lowest of 15 · 163% of median | 144 | 9.9 |
| 2013 | 841 | 6th lowest of 15 · 84% of median | 94 | 6.8 |
| 2014 | 1,274 | 12th lowest of 15 · 127% of median | 152 | 10.0 |
| 2015 | 597 | 2nd lowest of 15 · 59% of median | 91 | 5.0 |
| 2016 | 757 | 5th lowest of 15 · 75% of median | 126 | 6.5 |
| 2017 | 939 | 7th lowest of 15 · 93% of median | 109 | 6.4 |
| 2018 | 1,257 | 11th lowest of 15 · 125% of median | 158 | 8.5 |
| 2019 | 1,286 | 13th lowest of 15 · 128% of median | 160 | 9.2 |
| 2020 | 1,373 | 14th lowest of 15 · 137% of median | 160 | 11.9 |
| 2021 | 1,252 | 10th lowest of 15 · 125% of median | 128 | 9.5 |
| 2022 | 1,005 | 8th lowest of 15 · 100% of median | 110 | 10.5 |
| 2023 | 1,231 | 9th lowest of 15 · 122% of median | 121 | 6.0 |
| 2024 | 710 | 4th lowest of 15 · 71% of median | 158 | 10.3 |
| 2025 | 329 | 1st lowest of 15 · 33% of median | 144 | 5.1 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
How good is our record of it?
Grade B (8/10 points) — the components below are the finding; the letter alone is not.
The rubric, component by component
| Check | State | Detail |
|---|---|---|
| identity | complete | name, type, and water source all on file |
| decreed rights | on file | 3 right(s), seniority decoded |
| diversion record | present | 7761 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 59% of the irrigation seasons in 1964-2025 carry measured days |
| published-record stability | stable | no upstream revisions recorded against this structure |
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.