← My Water  ·  All ditches in this district  ·  Print / save as PDF  · 

 ·  every download of this record carries its certificate id

PIEDRA FALLS DITCH

Structure dossier · WDID 7800604 · DITCH · EAST FORK PIEDRA RIVER · DWR record

Piedra Falls Ditch is a ditch on East Fork Piedra River in Colorado. This page is its public record: the water it has a right to, whether it may take it today, and its history, compiled from the Colorado Division of Water Resources.

Source DWR administrative record · verify at DWR structure ↗ Source DWR administrative record · verify at DWR diversion records ↗ Source Our computation, scored against a reference · scored against DWR's call analysis, see /methods

Where this page's figures come from

Generated 2026-10-15 13:29 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260928 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (dd58e60) — every figure regenerates from this named code version and data image.

Who owns it

  • Piedra Falls Ditch Company (nonprofit corporation) — probable match, from the Colorado Secretary of State business record ↗; verify before relying on it. A nonprofit corporation of this name, in good standing, with its principal office in Southlake; matched on the name and the location, not confirmed by the company.

DWR’s own records name no owner for a ditch, reservoir or well, so this comes from the source shown and can be out of date. Organisations only: a private landowner’s name is never listed.

Where this structure is measured

GageFlowing nowRecordHow we know
PIEDRA FALLS DITCH 7800604A — — named for this WDID

A green link is DWR's own: either its telemetry inventory maps this WDID to that station, or the station is named for this WDID (0700553 → 0700553A). An amber one is ours — the station sits within 250 m and shares a distinctive word with this structure's name, which is a strong hint rather than a DWR statement that this gage meters this structure. Wrong? Tell us.

In short

PIEDRA FALLS DITCH holds 2 decreed rights on EAST FORK PIEDRA RIVER. A call at PIEDRA FALLS DITCH on EAST FORK PIEDRA RIVER (1934-07-17) currently reaches it: junior rights called out. 2 further calls state no district and sit outside this one, so they are counted here rather than assumed either way. That is today's position; the weeks ahead cannot be projected for it: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it. In a median year over its last 15 recorded years it diverts 2,853 acre-feet. It was a party to 1 court cases that also touched 2 other structures.

Assembled from the figures on this page — every number above is checked against them before it is shown (7 checked). The detail, with its method, is in the cards below.

Download this structure

Everything on this page as data you can work with — and a README that makes it citable: the HydroBase snapshot it was built from, the build commit, what every column means, the method behind each derived figure, and that method's stated limits.

⇩ Full record (.zip) Print / save as PDF

Or one table at a time: rights.csv · annual_use.csv · curtailment_now.csv · court_cases.csv · co_parties.csv · call_climatology.csv

What is in the bundle
  • rights.csv — every decreed right, most senior first, with admin numbers, dates, amounts, uses and case numbers.
  • annual_use.csv — recorded diversion by year, with releases accounted separately.
  • curtailment_now.csv — each right's current priority status and how often it was out across analog years.
  • court_cases.csv — the cases attached to its rights.
  • co_parties.csv — the other structures that were parties to those cases. Not available anywhere else.
  • call_climatology.csv — how often each right has been out of priority by week of season, with confidence intervals and the seasons the record could actually judge.
  • README.txt — provenance, methods, limits, disclaimer, and links back to DWR's own records for verification.

Where it sits

Location as DWR records it (diversion). Faint dots are the neighbouring water; click any to open it.

Current administration

● Junior rights called out — call at PIEDRA FALLS DITCH (EAST FORK PIEDRA RIVER, priority 1934-07-17).

Which of its rights are out of priority?

The outlook for the weeks ahead is not computable for this structure: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it. Today’s position is a separate question, and it is answered in Current administration above — that screen reads the district’s active calls and needs no reference gage.

Where it sits in line

Priority 1934-07-18 — 131st most senior of the 371 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: EUGENIO GALLEGOS DITCH (1934-04-01). Immediately behind: PIEDRA RETAIN POND FEED (1934-08-16).

Decreed rights (2)

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. Alt-pointAn absolute amount decreed at another structure that may be diverted here instead -- an alternate point of diversion or an exchange. DWR calls this the APEX amount; a right showing 0.0 absolute but an alt-point amount is exercised here under another structure's decree. Decreed forWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on.Case
30879.00000 1934-07-181962-04-19 26.0 cfs 0.0 — Storage, Irrigation +5 #302
42919.00000 1967-07-051968-12-19 0.0 cfs 50.0 cfs — Irrigation, Other 68-306

Amounts marked cfs are flow rates; AF are stored volumes (storage rights are decreed in acre-feet). An absolute amount of 0.0 beside an alt-point amount is not a dead right: the water is decreed at another structure, and that row records permission to divert it here instead (an alternate point or exchange). A case listing several numbers reflects the original decree plus later change cases.

How much of this decree was in priority, by day

A right is in priority on a day when it is senior to every call administering this structure. Of its 26.0 cfs decreed rate, the average day over the last 6 year(s) had 26.0 cfs in priority (100% of the decree). No call in effect is a free river — that was 88.0% of days.

Calls are set and released at a time of day, not at midnight, so a day is counted by the hour: a call setting at 4pm costs that day a third of its rate, not all of it. A call began or ended mid-day on 3 of these days.

This is paper water. It is the decreed rate that was in priority — not water that was physically in the stream, and not water this structure diverted. A ditch can be in priority for 50 cfs on a day the creek carries five. What that distinction means →

YearMean in priority (Apr–Sep) Share of decreeFree-river days Days fully out
2026 26.0 cfs 100% 173 0
2025 26.0 cfs 100% 259 0
2024 26.0 cfs 100% 366 0
2023 26.0 cfs 100% 365 0
2022 26.0 cfs 100% 365 0
2021 26.0 cfs 100% 78 0
Show the last 120 days, day by day
DateIn priorityControlling call
2026-10-14 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-13 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-12 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-11 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-10 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-09 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-08 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-07 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-06 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-05 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-04 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-03 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-02 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-10-01 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-30 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-29 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-28 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-27 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-26 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-25 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-24 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-23 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-22 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-21 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-20 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-19 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-18 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-17 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-16 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-15 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-14 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-13 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-12 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-11 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-10 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-09 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-08 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-07 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-06 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-05 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-04 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-03 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-02 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-09-01 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-31 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-30 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-29 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-28 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-27 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-26 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-25 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-24 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-23 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-22 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-21 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-20 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-19 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-18 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-17 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-16 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-15 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-14 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-13 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-12 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-11 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-10 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-09 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-08 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-07 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-06 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-05 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-04 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-03 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-02 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-08-01 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-31 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-30 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-29 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-28 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-27 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-26 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-25 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-24 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-23 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-22 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-21 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-20 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-19 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-18 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-17 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-16 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-15 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-14 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-13 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-12 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-11 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-10 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-09 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-08 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-07 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-06 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-05 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-04 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-03 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-02 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-07-01 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-06-30 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-06-29 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-06-28 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-06-27 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-06-26 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-06-25 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-06-24 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · East Fork Piedra River · same source, at or above the calling point
2026-06-23 26.0 cfs (100%) PIEDRA FALLS DITCH, 1934-07-18 · part of the day (67%) · East Fork Piedra River · same source, at or above the calling point
2026-06-22 26.0 cfs (100%) free river — no call
2026-06-21 26.0 cfs (100%) free river — no call
2026-06-20 26.0 cfs (100%) free river — no call
2026-06-19 26.0 cfs (100%) free river — no call
2026-06-18 26.0 cfs (100%) free river — no call
2026-06-17 26.0 cfs (100%) free river — no call
How this is worked out, and what it cannot tell you
  • This is a decreed rate that was in priority -- paper water, not water that was available or diverted.
  • Augmentation plans, exchanges and substitute supply plans let a structure divert lawfully while out of priority; none are modelled.
  • Calls on the river this source flows into are included without a position test, so curtailment can be over-reported where the calling point sits above the confluence.
  • DWR's administration is the authority. Scored against DWR's own call analysis, this method agreed on 95.5% of 85,822 structure-days (2026-08-29).
  • Calls considered for this structure: 12, of which 10 sit on a river it flows into.

Recorded use (last 15 years on record)

Years far under the decreed amount? That gap has a name — paper water vs. wet water, explained on this structure.

In a median year this structure has a recorded diversion of 2,853 AF. Its most recent year on record, 2025, came in at 1,162 AF — 41% of that, and 1st lowest of the 15 years with a recorded volume.

This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.

YearDiverted (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 recordReleased (AF)Days recordedPeak (cfs)
2011 3,412 10th lowest of 15 · 120% of median — 135 27.3
2012 4,116 12th lowest of 15 · 144% of median 201 176 26.3
2013 2,853 8th lowest of 15 · 100% of median 374 150 30.1
2014 2,675 6th lowest of 15 · 94% of median 289 148 21.5
2015 2,468 4th lowest of 15 · 86% of median 1,166 150 13.9
2016 1,349 2nd lowest of 15 · 47% of median 171 109 12.9
2017 1,981 3rd lowest of 15 · 69% of median 22 134 17.5
2018 3,036 9th lowest of 15 · 106% of median 0 163 18.6
2019 2,816 7th lowest of 15 · 99% of median 681 111 26.0
2020 2,641 5th lowest of 15 · 93% of median 0 158 14.5
2021 3,428 11th lowest of 15 · 120% of median 0 148 16.8
2022 4,366 13th lowest of 15 · 153% of median 2,108 145 29.7
2023 5,030 15th lowest of 15 · 176% of median 945 162 31.0
2024 4,436 14th lowest of 15 · 156% of median 667 160 25.5
2025 1,162 1st lowest of 15 · 41% of median 366 131 11.3

Call-derived yield: senior right divertible 2.3% of a median season / 0.0% dry-year.

How good is our record of it?

Grade B (8/10 points) — the components below are the finding; the letter alone is not.

The rubric, component by component
CheckStateDetail
identity complete name, type, and water source all on file
decreed rights on file 2 right(s), seniority decoded
diversion record present 7928 measured days; currency unknown (no data-coverage date to compare against)
record continuity patchy 60% of the irrigation seasons in 1964-2025 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.

Hydrohistorian is free, with no ads — one server and a lot of public records. If it earns its keep, you can help keep it running.