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GRIFFING NO 1 DITCH
Structure dossier · WDID 2800571 · 1 · TOMICHI CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:55 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (2deb1d7) — 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 1878-06-01 — 49th most senior of the 1505 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: HARRIS DITCH (1878-05-31). Immediately behind: GRIFFING NO 2 DITCH (1878-06-01).
Decreed rights (6)
| 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 |
|---|---|---|---|---|---|---|---|
| 16192.10379 | 1878-06-01 | 1904-04-29 | 2.0 | 0.0 | C | IRRAUG | 39 |
| 16192.10805 | 1879-08-01 | 1904-04-29 | 0.5 | 0.0 | C | IRRAUG | 44 |
| 28311.10379 | 1878-06-01 | 1943-04-19 | 8.0 | 0.0 | C | IRR | 208 |
| 28311.10805 | 1879-08-01 | 1943-04-19 | 4.0 | 0.0 | C | IRR | 212 |
| 28311.19842 | 1904-04-29 | 1943-04-19 | 6.85 | 0.0 | C | IRR | 287 |
| 60995.0 | 2016-12-30 | 2016-12-31 | 0.0 | 2.93 | C | INDRCH |
Legal record & documents
20 decreed actions on record across
8 court cases:
16CW3089, CA2079, 95CW0045, 94CW0192, 03CW0022, CA1266, 96CW0267, 83CW0318.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
16CW3089 | 2 | 2020-12-31 | S |
CA2079 | 3 | 1943-04-19 | S |
95CW0045 | 2 | 1943-04-19 | S |
94CW0192 | 1 | 1943-04-19 | S |
03CW0022 | 6 | 1943-04-19 | S |
CA1266 | 2 | 1904-04-29 | S |
96CW0267 | 2 | 1904-04-29 | S |
83CW0318 | 2 | 1904-04-29 | 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 2,683 AF. Its most recent year on record, 2025, came in at 2,120 AF — 79% of that, and 3rd lowest of the 15 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| 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 | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 2011 | 1,357 | 1st lowest of 15 · 51% of median | — | 76 | 11.5 |
| 2012 | 2,683 | 8th lowest of 15 · 100% of median | — | 160 | 16.0 |
| 2013 | 2,496 | 7th lowest of 15 · 93% of median | 0 | 96 | 16.5 |
| 2014 | 2,747 | 9th lowest of 15 · 102% of median | 2,747 | 101 | 16.0 |
| 2015 | 2,841 | 11th lowest of 15 · 106% of median | 1,813 | 121 | 32.5 |
| 2016 | 7,262 | 15th lowest of 15 · 271% of median | 3,775 | 111 | 38.2 |
| 2017 | 1,516 | 2nd lowest of 15 · 56% of median | 648 | 91 | 18.1 |
| 2018 | 2,154 | 4th lowest of 15 · 80% of median | 0 | 102 | 17.8 |
| 2019 | 2,987 | 13th lowest of 15 · 111% of median | 0 | 131 | 17.0 |
| 2020 | 2,905 | 12th lowest of 15 · 108% of median | — | 129 | 18.6 |
| 2021 | 2,343 | 6th lowest of 15 · 87% of median | — | 84 | 16.0 |
| 2022 | 2,305 | 5th lowest of 15 · 86% of median | — | 102 | 16.5 |
| 2023 | 2,775 | 10th lowest of 15 · 103% of median | — | 137 | 24.2 |
| 2024 | 3,119 | 14th lowest of 15 · 116% of median | — | 105 | 20.2 |
| 2025 | 2,120 | 3rd lowest of 15 · 79% of median | — | 78 | 16.5 |
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 | 6 right(s), seniority decoded |
| diversion record | present | 5155 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 43% of the irrigation seasons in 1970-2025 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.