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HAHN AND OTTEN DITCH
Structure dossier · WDID 4500618 · 1 · EAST DIVIDE CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:12 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 1909-06-04 — 178th most senior of the 1378 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: KIMBALL WELL NO 1 (1903-12-09). Immediately behind: BOULTON DITCH (1907-02-23).
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 |
|---|---|---|---|---|---|---|---|
| 22243.21704 | 1909-06-04 | 1910-12-10 | 0.8 | 0.0 | C | IRR | 143AA |
| 22258.21339 | 1908-06-04 | 1911-04-11 | 0.36 | 0.0 | C | IRR | 143AAA |
| 30170.22738 | 1912-04-03 | 1939-06-22 | 2.03 | 0.0 | C | IRR | 166D |
Legal record & documents
3 decreed actions on record across
3 court cases:
CA3253, CA1488, CA1435.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA3253 | 1 | 1939-06-22 | S |
CA1488 | 1 | 1911-04-11 | S |
CA1435 | 1 | 1910-12-10 | 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 42 AF. Its most recent year on record, 2009, came in at 45 AF — 107% 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) |
|---|---|---|---|---|
| 1994 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 1995 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 1996 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 1997 | 376 | 15th lowest of 15 · 895% of median | 67 | 3.0 |
| 1998 | 13 | 5th lowest of 15 · 31% of median | 12 | 0.8 |
| 1999 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2000 | 73 | 12th lowest of 15 · 174% of median | 39 | 1.0 |
| 2001 | 103 | 13th lowest of 15 · 245% of median | 38 | 1.5 |
| 2003 | 32 | 7th lowest of 15 · 76% of median | 11 | 2.0 |
| 2004 | 25 | 6th lowest of 15 · 60% of median | 11 | 1.6 |
| 2005 | 141 | 14th lowest of 15 · 336% of median | 51 | 2.5 |
| 2006 | 42 | 8th lowest of 15 · 100% of median | 31 | 0.8 |
| 2007 | 44 | 9th lowest of 15 · 105% of median | 20 | 1.5 |
| 2008 | 62 | 11th lowest of 15 · 148% of median | 20 | 1.8 |
| 2009 | 45 | 10th lowest of 15 · 107% of median | 21 | 1.5 |
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 (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 | 395 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 8% of the irrigation seasons in 1986-2009 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.