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WELLMAN DITCH
Structure dossier · WDID 0600557 · DITCH · BOULDER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 23:46 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (96d5528) — 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: no administrative call record for this basin.
Where it sits in line
Priority 1917-03-08 — 266th most senior of the 1867 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: 0605206 (1916-08-15). Immediately behind: 0605251 (1917-11-03).
On MAINSTEM at river mile 10.4, it is 13th of 78 down the reach. Immediately upstream: NORTH BOULDER FARMERS D 12TH ST RETURN. Immediately downstream: PHIL HOGAN SEEPAGE DITCH.
Position on the modelled network, not a claim about whose water this is — a stream carries water from many rights at once, and diverted water returns to it.
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 |
|---|---|---|---|---|---|---|---|
| 24538.0 | 1917-03-08 | 1926-06-21 | 50.0 | 0.0 | C | STO | |
| 24868.0 | 1918-02-01 | 1935-01-09 | 70.0 | 0.0 | C | STO | |
| 54681.0 | 1999-09-17 | 1999-12-31 | 0.0 | 0.0 | C | IRRINDFIRDOMOTH |
Legal record & documents
8 decreed actions on record across
5 court cases:
99CW0227, 13CW3087, CA6672, CA1279, 84CW0357.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
99CW0227 | 2 | 1999-12-31 | S |
13CW3087 | 2 | 1999-12-31 | S |
CA6672 | 2 | 1935-01-09 | S |
CA1279 | 1 | 1882-06-02 | O |
84CW0357 | 1 | 1882-06-02 | 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 4 years on record)
In a median year this structure has a recorded diversion of 76 AF. Its most recent year on record, 1953, came in at 58 AF — 76% of that, and 2nd lowest of the 4 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) |
|---|---|---|---|---|
| 1950 | 30 | 1st lowest of 4 · 39% of median | 4 | 5.0 |
| 1951 | 119 | 4th lowest of 4 · 156% of median | 11 | 6.0 |
| 1952 | 95 | 3rd lowest of 4 · 124% of median | 18 | 3.0 |
| 1953 | 58 | 2nd lowest of 4 · 76% of median | 9 | 5.0 |
Trends for this structure
Its reference gage, BOULDER CREEK BELOW WELLMAN DITCH: no clear flow trend.
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 | fragment | 42 measured day(s) on file (under 180 -- a season, not a history) |
| record continuity | unknown | record too short to assess continuity (needs 2+ years of span and 180+ 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.