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SEYMOUR DITCH 1
Structure dossier · WDID 4700869 · 1 · GRIZZLY CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 01:19 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 1889-05-25 — 205th 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: VICTOR DITCH (1889-05-20). Immediately behind: FREEMAN DITCH (1889-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 14390.0 | 1889-05-25 | 1892-09-19 | 3.0 | 0.0 | C | IRR | 94(84) |
| 38837.0 | 1956-05-01 | 1958-01-10 | 5.0 | 0.0 | C | IRR | 785 |
Legal record & documents
2 decreed actions on record across
2 court cases:
CA0511, CA0922.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA0511 | 1 | 1958-01-10 | S |
CA0922 | 1 | 1892-09-19 | O |
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 553 AF. Its most recent year on record, 2024, came in at 215 AF — 39% 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) |
|---|---|---|---|---|
| 2008 | 427 | 6th lowest of 15 · 77% of median | 37 | 11.0 |
| 2009 | 602 | 9th lowest of 15 · 109% of median | 52 | 8.5 |
| 2010 | 812 | 11th lowest of 15 · 147% of median | 67 | 10.0 |
| 2011 | 875 | 12th lowest of 15 · 158% of median | 62 | 11.0 |
| 2012 | 1,390 | 15th lowest of 15 · 251% of median | 103 | 9.0 |
| 2013 | 627 | 10th lowest of 15 · 113% of median | 40 | 10.5 |
| 2014 | 930 | 14th lowest of 15 · 168% of median | 48 | 10.8 |
| 2015 | 428 | 7th lowest of 15 · 77% of median | 70 | 8.0 |
| 2016 | 553 | 8th lowest of 15 · 100% of median | 39 | 8.0 |
| 2017 | 298 | 4th lowest of 15 · 54% of median | 27 | 6.0 |
| 2018 | 32 | 2nd lowest of 15 · 6% of median | 8 | 2.7 |
| 2019 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2020 | 333 | 5th lowest of 15 · 60% of median | 29 | 6.0 |
| 2023 | 904 | 13th lowest of 15 · 164% of median | 57 | 8.2 |
| 2024 | 215 | 3rd lowest of 15 · 39% of median | 38 | 2.9 |
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 (7/10 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 | 2 right(s), seniority decoded |
| diversion record | present | 2749 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 24% of the irrigation seasons in 1970-2024 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.