Hydrohistorian
← My Water · Print / save as PDF
KEYSTONE DITCH
Structure dossier · WDID 3600683 · 1 · KEYSTONE CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 01:21 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 1901-06-01 — 190th most senior of the 1247 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: QUAKEN ASP DITCH (1901-04-01). Immediately behind: REYNOLDS RESERVOIR (1901-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 18779.0 | 1901-06-01 | 1910-03-02 | 8.18 | 0.0 | C | IRRCOMDOMAUG | 130 |
| 32075.25018 | 1918-07-01 | 1952-03-10 | 2.36 | 0.0 | C | IRR | 323 |
| 32309.0 | 1938-06-17 | 1952-03-10 | 5.0 | 0.0 | C | RECFISDOM | 123 |
Legal record & documents
19 decreed actions on record across
7 court cases:
CA1806, CA1805, 96CW0163, 82CW0432, W3548, CA1277, 88CW0244.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA1806 | 1 | 1952-03-10 | S |
CA1805 | 2 | 1952-03-10 | S |
96CW0163 | 6 | 1952-03-10 | O, S |
82CW0432 | 2 | 1913-10-13 | O, S |
W3548 | 4 | 1910-03-02 | O |
CA1277 | 1 | 1910-03-02 | O |
88CW0244 | 3 | 1910-03-02 | 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 313 AF. Its most recent year on record, 2024, came in at 393 AF — 126% of that, and 10th 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) |
|---|---|---|---|---|
| 2004 | 313 | 8th lowest of 15 · 100% of median | 139 | 2.4 |
| 2005 | 510 | 14th lowest of 15 · 163% of median | 139 | 2.4 |
| 2006 | 182 | 3rd lowest of 15 · 58% of median | 108 | 1.8 |
| 2007 | 160 | 2nd lowest of 15 · 51% of median | 100 | 1.3 |
| 2008 | 284 | 7th lowest of 15 · 91% of median | 99 | 1.9 |
| 2009 | 0 | 1st lowest of 15 · 0% of median | 2 | 0.0 |
| 2012 | 258 | 5th lowest of 15 · 82% of median | 148 | 1.6 |
| 2017 | 234 | 4th lowest of 15 · 75% of median | 153 | 1.5 |
| 2018 | 268 | 6th lowest of 15 · 86% of median | 164 | 1.2 |
| 2019 | 345 | 9th lowest of 15 · 110% of median | 166 | 1.9 |
| 2020 | 423 | 11th lowest of 15 · 135% of median | 152 | 1.9 |
| 2021 | 497 | 13th lowest of 15 · 159% of median | 179 | 1.7 |
| 2022 | 574 | 15th lowest of 15 · 183% of median | 170 | 2.5 |
| 2023 | 428 | 12th lowest of 15 · 137% of median | 179 | 2.1 |
| 2024 | 393 | 10th lowest of 15 · 126% of median | 168 | 1.9 |
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 | 3 right(s), seniority decoded |
| diversion record | present | 3358 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 32% of the irrigation seasons in 1975-2024 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.