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BERGEN DITCH

Structure dossier · WDID 0900535 · DITCH · TURKEY CREEK · DWR record

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 2026-10-12 11:53 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

  • The Bergen Ditch & Reservoir 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 Littleton; 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DWR’s own records name no owner for a ditch, reservoir or well, so this comes from the source shown and can be out of date.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.

The record and the river

Where this structure is measured

GageFlowing nowRecordHow we know
BERGEN DITCH 0900535A 0.0 cfs 2023–2026, 990 days DWR telemetry mapping

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.

Flowing now

0.0 cfs as of 2026-10-12 07:30 (4.4 h ago)

Zero is a real reading: the gage is reporting, and it says this structure is not diverting right now.

Provisional 15-minute telemetry from 0900535A ↗ (BERGEN DITCH). Raw, not the approved record — it is never merged into the diversion history below. DWR publishes the official diversion record after the water year closes and is approved, which is why that record ends months back while this reads minutes ago.

In short

BERGEN DITCH holds 4 decreed rights on TURKEY CREEK. A call at PIONEER UNION DITCH on BEAR CREEK (1861-12-10) currently reaches it: fully called out. 7 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: no gage record for this year at this date, so there is nothing to find analogs for. In a median year over its last 15 recorded years it diverts 717 acre-feet. It was a party to 1 court cases that also touched 10 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

● Fully called out — call at PIONEER UNION DITCH (BEAR CREEK, priority 1861-12-10).

Which of its rights are out of priority?

The outlook for the weeks ahead is not computable for this structure: no gage record for this year at this date, so there is nothing to find analogs for. 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 1874-05-01 — 111th most senior of the 2058 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: TIGER LILY D SP 3 (1873-08-15). Immediately behind: 0903687 (1874-05-01).

On TURKEY CREEK at river mile 32.2, it is 6th of 21 down the reach. Immediately upstream: SANGER PL. Immediately downstream: RED ROCKS COUNTRY CLUB CNL.

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 (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. 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
8887.00000 1874-05-011884-02-04 5.04 cfs 0.0 — Irrigation 82CW0476, CA6832
10476.00000 1878-09-061884-02-04 8.266 cfs 0.0 — Irrigation CA6832, 82CW0476
11591.00000 1881-09-251884-02-04 1.6842 cfs 0.0 — Irrigation CA6832, 82CW0476
13081.00000 1885-10-241935-09-24 53.76 cfs 0.0 — Irrigation CA91471, 82CW0476

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 68.75 cfs decreed rate, the average day over the last 6 year(s) had 40.08 cfs in priority (58% of the decree). No call in effect is a free river — that was 10.0% of days.

On 286 days some rights were in priority and others were not — seniority splits a decree rather than switching it off. 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 28 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 0.72 cfs 1% 0 178
2025 33.86 cfs 49% 2 80
2024 37.69 cfs 55% 110 126
2023 44.71 cfs 65% 68 19
2022 32.16 cfs 47% 3 56
2021 8.17 cfs 12% 0 71
Show the last 120 days, day by day
DateIn priorityControlling call
2026-10-11 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-10 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-09 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-08 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-07 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-06 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-05 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-04 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-03 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-02 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-10-01 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-30 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-29 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-28 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-27 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-26 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-25 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-24 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-23 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-22 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-21 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-20 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-19 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-18 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-17 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-16 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-15 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-14 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-13 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-12 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-11 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-10 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-09 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-08 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-07 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-06 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-05 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-04 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-03 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-02 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-09-01 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-31 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-30 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-29 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-28 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-27 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-26 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-25 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-24 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-23 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-22 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-21 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-20 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-19 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-18 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-17 0.0 cfs (0%) WARD DITCH, 1862-09-01 · Bear Creek · on a river this source flows into
2026-08-16 0.0 cfs (0%) INDEPENDENT HIGHLINE DITCH, 1862-11-01 · Turkey Creek · same source, at or above the calling point
2026-08-15 0.0 cfs (0%) INDEPENDENT HIGHLINE DITCH, 1862-11-01 · Turkey Creek · same source, at or above the calling point
2026-08-14 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-13 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-12 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-11 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-10 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-09 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-08 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-07 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-06 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-05 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-04 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-03 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-02 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-08-01 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-31 0.0 cfs (0%) PIONEER UNION DITCH, 1861-12-10 · Bear Creek · on a river this source flows into
2026-07-30 0.0 cfs (0%) PIONEER UNION DITCH, 1861-12-10 · Bear Creek · on a river this source flows into
2026-07-29 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-28 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-27 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-26 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-25 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-24 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-23 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-22 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-21 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-20 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-19 0.0 cfs (0%) SOUTH PLATTE RIVER AT WATERTON, 1860-12-31 · South Platte River · on a river this source flows into
2026-07-18 0.0 cfs (0%) SOUTH PLATTE RIVER AT WATERTON, 1860-12-31 · South Platte River · on a river this source flows into
2026-07-17 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-16 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-15 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-14 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-13 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-12 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-11 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-10 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-09 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-08 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-07 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-06 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-05 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-04 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-03 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-02 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-07-01 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-30 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-10 · Bear Creek · on a river this source flows into
2026-06-29 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-28 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-27 22.917 cfs (33%) HARRIMAN DITCH, 1865-10-01 · Bear Creek · on a river this source flows into
2026-06-26 45.833 cfs (67%) WESTERN MUTUAL DITCH, 1871-10-05 · South Platte River · on a river this source flows into
2026-06-25 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-24 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-23 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-22 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-21 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-20 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-19 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-18 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-17 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-16 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-15 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
2026-06-14 0.0 cfs (0%) HARRIMAN DITCH, 1861-12-01 · Bear Creek · on a river this source flows into
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: 5488, of which 5355 sit on a river it flows into.

How often is it out of priority?

Across the 11 seasons whose call record is complete enough to judge this structure (2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026), week by week from April.

most senior right · admin 8887.00000 · peaks at 10 of 11 seasons
AprMayJunJulAugSep
middle right · admin 11591.00000 · peaks at 11 of 11 seasons
AprMayJunJulAugSep
most junior right · admin 13081.00000 · peaks at 11 of 11 seasons
AprMayJunJulAugSep

Snow sets the clock here. In the driest third of snow years (3 seasons), 2 seasons stayed under call throughout and 0 ended free. In the middle third (5 seasons), the call settled in for the season around June 24 (June 10 to July 15 across those years); in 1 of them it never lifted at all. In the wettest third (3 seasons), the call settled in for the season around June 3 (May 20 to July 8 across those years).

Snow years ranked by the district’s April 1 snow-water percentile across 1 SNOTEL site; 11 seasons carry both a snow reading and a judgeable call record. How the past played out, not a forecast.

Why only 11 seasons, and what the bars mean

Each bar is one week: how many of those seasons that right was out of priority under a call this site can lawfully attribute to this structure. Green is never, red is every season on record.

The short record is a property of DWR's data, not of the river. A call only counts against a structure when we can establish it applies — by the districts named in its set comments, or by stream mile on the same source. DWR did not begin stating affected districts routinely until about 2015: fewer than one call in ten can be judged before then, against roughly two in three since. A season we cannot judge is not a season without calls, so it is dropped rather than counted as quiet — 12 seasons dropped here.

This is a frequency over past seasons, not a forecast. It says nothing about what the division engineer will do this year.

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 717 AF. Its most recent year on record, 2025, came in at 933 AF — 130% of that, and 12th 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 971 13th lowest of 15 · 135% of median — 86 18.6
2012 658 7th lowest of 15 · 92% of median — 63 15.5
2013 858 10th lowest of 15 · 120% of median — 51 25.9
2014 302 1st lowest of 15 · 42% of median — 29 16.0
2015 458 3rd lowest of 15 · 64% of median — 20 16.0
2016 1,099 14th lowest of 15 · 153% of median — 54 17.5
2017 1,929 15th lowest of 15 · 269% of median — 123 16.0
2018 630 6th lowest of 15 · 88% of median — 68 15.5
2019 717 8th lowest of 15 · 100% of median — 48 11.2
2020 577 4th lowest of 15 · 80% of median — 38 16.5
2021 879 11th lowest of 15 · 123% of median — 51 12.0
2022 794 9th lowest of 15 · 111% of median — 65 13.9
2023 577 4th lowest of 15 · 80% of median — 51 16.8
2024 371 2nd lowest of 15 · 52% of median — 27 13.5
2025 933 12th lowest of 15 · 130% of median — 87 11.3

Call-derived yield: senior right divertible 58.0% of a median season / 16.8% dry-year.

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
CheckStateDetail
identity complete name, type, and water source all on file
decreed rights on file 4 right(s), seniority decoded
diversion record stale 4005 measured days, but newest is 477 day(s) before the data's end (target 450)
record continuity sparse 25% of the irrigation seasons in 1950-2025 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.

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