PIONEER UNION DITCH
WDID 0900862Water Right Dependency Report · generated from release evidence · 2026-07-29Decreed
17.4 cfs
9 right(s) · senior 1861-06-01
Median reliability
100%
severe: 100%
Observed callers
6
dominant: HARRIMAN DITCH
Served land
0 parcels
$0 assessed
Active signals
3
0 entitlement gap(s)
1 · What it isdecree components and legal genealogy
| Right | Priority | Amount | Uses | Status |
|---|---|---|---|---|
| 0900862-4170.00000 | 1861-06-01 (admin 4170.00000) | 0.0248 cfs | 1 | Absolute |
| 0900862-4353.00000 | 1861-12-01 (admin 4353.00000) | — AF | 2X | Absolute |
| 0900862-4362.00000 | 1861-12-10 (admin 4362.00000) | 5.4381 cfs | 12345678AP | Absolute |
| 0900862-4489.00000 | 1862-04-16 (admin 4489.00000) | — AF | 2X | Absolute |
| 0900862-4627.00000 | 1862-09-01 (admin 4627.00000) | 1.6856 cfs | 123456789AP | Absolute |
| 0900862-51331.00000 | 1990-07-16 (admin 51331.00000) | 5 cfs | 0156A | Absolute |
| 0900862-5418.00000 | 1864-10-31 (admin 5418.00000) | — AF | 2X | Absolute |
| 0900862-5553.00000 | 1865-03-15 (admin 5553.00000) | 5.2151 cfs | 12345678AP | Absolute |
| 0900862-5570.00000 | 1865-04-01 (admin 5570.00000) | — AF | 2X | Absolute |
2 · How it has performedbeneficial-use evidence, honestly classified
- water quality composite
- 0.79
3 · What it depends on & who controls its riverobserved call causality + supply support
- HARRIMAN DITCH
- 763.4 day-eq · 352 episodes / 20 seasons · last 2026 · conf 0.98
- WARD DITCH
- 392.1 day-eq · 250 episodes / 16 seasons · last 2026 · conf 0.98
- WARRIOR DITCH
- 200.8 day-eq · 99 episodes / 8 seasons · last 2020 · conf 0.91
- HINDRY DITCH
- 55.2 day-eq · 174 episodes / 7 seasons · last 2013 · conf 0.84
- SODA LAKES(WEST) RES 1
- 12.6 day-eq · 16 episodes / 9 seasons · last 2025 · conf 0.98
- BOWLES RESERVOIR
- 6.3 day-eq · 15 episodes / 10 seasons · last 2018 · conf 0.98
- owner evidence
- TOMBLING, DON · probable (0.55)
- owner evidence
- TOMBLING, DON · probable (0.55)
- owner evidence
- TOMBLING, DON · probable (0.55)
- owner evidence
- TOMBLING, DON · probable (0.55)
- as a caller
- impairs 716 rights · 77545.9 day-eq administered
4 · What happens under stressempirical administration replay + season nowcast
- median year
- 100% seasonal reliability
- severe drought (2002-class)
- 100% seasonal reliability
- 2026 season nowcast
- Apr 1 SWE 61% of median → severe-class year
- call timing
- P(call by Jun 15) = 0.67 · P(any call) = 0.83 · expected first call ~day 160
- method
- empirical replay of observed administration by condition class — modeled, not observed
5 · What else is affected — the land under this waterserved parcels with entitlement + conveyance posture (three truths, never collapsed)
| Parcel | Owner (assessor) | Acres | Assessed | Coverage | Entitlement | Deed posture |
|---|
6 · What can impair it — active signalsevery detection on this structure, its rights, and its land
7 · Verify before closingthe transaction-specific evidence checklist
- resolve right ownership
- best evidence is probable — county deed research + company records required
- confirm administration exposure
- 6 observed senior caller(s); verify current call status with the division office
- professional review
- this report is data intelligence, not a legal or engineering opinion
Evidence basewhat this report rests on — and what it doesn't
- source coverage
- 6/10 sources live — development (seed fallback present)
- sources
- CDSS structures/net-amounts/calls/diversions · OIT parcels (annual, ≤12mo lag) · irrigated lands · satellite ET · court outcomes · company ledgers
- disclaimer
- data intelligence from public + program records; not a legal opinion, engineering report, or title commitment