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ZARTMAN DITCH
Structure dossier · WDID 3700871 · 1 · SALT CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:13 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 1908-10-31 — 293rd most senior of the 2162 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: EWING DITCH (1906-06-01). Immediately behind: BOLTS DITCH (1882-10-01).
Decreed rights (4)
| 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 |
|---|---|---|---|---|---|---|---|
| 22435.21488 | 1908-10-31 | 1911-11-13 | 2.4 | 0.0 | C | IRR | 296 |
| 23261.2266 | 1912-01-16 | 1914-06-01 | 2.0 | 0.0 | C | IRR | 317 |
| 30894.26906 | 1923-09-01 | 1936-10-03 | 0.95 | 0.0 | C | IRR | 455GG |
| 53691.21488 | 1908-10-31 | 1997-12-31 | 3.0 | 0.0 | C | IRR |
Legal record & documents
5 decreed actions on record across
4 court cases:
97CW0271, CA0963, CA0626, CA0563.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
97CW0271 | 2 | 1997-12-31 | S |
CA0963 | 1 | 1936-10-03 | S |
CA0626 | 1 | 1914-06-01 | S |
CA0563 | 1 | 1911-11-13 | 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 212 AF. Its most recent year on record, 2024, came in at 160 AF — 76% of that, and 6th 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) |
|---|---|---|---|---|
| 2002 | 38 | 4th lowest of 15 · 18% of median | 21 | 1.0 |
| 2003 | 245 | 9th lowest of 15 · 116% of median | 172 | 1.8 |
| 2004 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2005 | 451 | 12th lowest of 15 · 213% of median | 122 | 2.0 |
| 2006 | 354 | 11th lowest of 15 · 167% of median | 125 | 1.9 |
| 2007 | 212 | 8th lowest of 15 · 100% of median | 143 | 1.7 |
| 2008 | 541 | 14th lowest of 15 · 255% of median | 155 | 3.6 |
| 2009 | 468 | 13th lowest of 15 · 221% of median | 130 | 3.2 |
| 2010 | 630 | 15th lowest of 15 · 297% of median | 149 | 3.0 |
| 2011 | 166 | 7th lowest of 15 · 78% of median | 57 | 1.6 |
| 2014 | 311 | 10th lowest of 15 · 147% of median | 135 | 4.2 |
| 2015 | 51 | 5th lowest of 15 · 24% of median | 129 | 0.2 |
| 2016 | 36 | 3rd lowest of 15 · 17% of median | 54 | 0.4 |
| 2023 | 0 | 1st lowest of 15 · 0% of median | 61 | 0.0 |
| 2024 | 160 | 6th lowest of 15 · 76% of median | 305 | 1.4 |
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 | 4 right(s), seniority decoded |
| diversion record | present | 4716 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 30% of the irrigation seasons in 1951-2024 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.