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EPPERSON DITCH/PUMP

Structure dossier · WDID 0801015 · PUMP · SOUTH PLATTE RIVER · DWR record

Epperson Ditch/pump is a pump on South Platte 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 11:05 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.

The record and the river

Where this structure is measured

GageFlowing nowRecordHow we know
EPPERSON DITCH PUMP 0801015A 0.0 cfs 2022–2024, 164 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 last reported 2024-05-31 12:45

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

This station has not reported in over a day, so treat the number as the last thing it said, not as now.

Provisional 15-minute telemetry from 0801015A ↗ (EPPERSON DITCH PUMP). 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

EPPERSON DITCH/PUMP holds 12 decreed rights on SOUTH PLATTE RIVER. A call at BURLINGTON D RIVER HEADGATE on SOUTH PLATTE RIVER (1885-11-20), and 1 other currently reaches it: junior rights called out. 4 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: only 1 analog year(s) have both flow and a complete administration record; 4 needed. In a median year over its last 15 recorded years it diverts 321 acre-feet. That use is falling by about 6.2 acre-feet a year over 15 years (p=0.037666922228628774). It was a party to 6 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 (13 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 BURLINGTON D RIVER HEADGATE (SOUTH PLATTE RIVER, priority 1885-11-20).

● Junior rights called out — call at STERLING IRR CO DITCH 1 (SOUTH PLATTE RIVER, priority 1936-01-13).

Which of its rights are out of priority?

The outlook for the weeks ahead is not computable for this structure: only 1 analog year(s) have both flow and a complete administration record; 4 needed. 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 1860-05-01 — 2nd most senior of the 21886 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: BRANTNER DITCH (1860-04-01). Immediately behind: WALTER S WELTON RES (1860-05-15).

On MAINSTEM at river mile 101.6, it is 715th of 890 down the reach. Immediately upstream: WILSON RESTAURANT POND. Immediately downstream: DENVER SPR2W LRF RELEASE.

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 (13)

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
3774.00000 1860-05-011883-12-10 0.34 cfs 0.0 — Irrigation 91CW0030, CA1103 +2
4170.00000 1861-06-011884-02-04 0.0 cfs 0.0 0.23 cfs Municipal, All beneficial uses 91CW0102
4353.00000 1861-12-011884-02-04 0.0 cfs 0.0 3.37 cfs Municipal, All beneficial uses 91CW0109
4362.00000 1861-12-101884-02-04 0.0 cfs 0.0 3.0 cfs Municipal, All beneficial uses 91CW0100
4627.00000 1862-09-011884-02-04 0.0 cfs 0.0 0.8 cfs Municipal, All beneficial uses 91CW0100
4822.00000 1863-03-151883-04-28 0.0 AF 0.0 698.85 AF Municipal, Augmentation 09CW0084
4822.00000 1863-03-151883-04-28 0.0 cfs 0.0 2.65 cfs Municipal, Augmentation 09CW0084
5418.00000 1864-10-311884-02-04 0.0 cfs 0.0 1.4 cfs Municipal, All beneficial uses 91CW0109
5753.00000 1865-10-011884-02-04 0.0 cfs 0.0 1.5 cfs Municipal, All beneficial uses 91CW0105
7015.00000 1869-03-161884-02-04 0.0 cfs 0.0 1.6 cfs Municipal, All beneficial uses 91CW0103
7791.00000 1871-05-011884-02-04 0.0 cfs 0.0 3.2 cfs Municipal, All beneficial uses 91CW0103
11748.00000 1882-03-011884-02-04 0.0 cfs 0.0 1.0 cfs Municipal, All beneficial uses 91CW0103
51499.39575 1958-05-091991-12-31 2.25 cfs 0.0 — Irrigation 91CW0029

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 2.59 cfs decreed rate, the average day over the last 6 year(s) had 0.664 cfs in priority (26% of the decree). No call in effect is a free river — that was 10.5% of days.

On 1585 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 43 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 0.34 cfs 13% 0 0
2025 0.34 cfs 13% 2 0
2024 0.84 cfs 32% 110 0
2023 1.18 cfs 46% 70 0
2022 0.42 cfs 16% 8 0
2021 0.44 cfs 17% 2 0
Show the last 120 days, day by day
DateIn priorityControlling call
2026-10-14 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-13 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-12 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-11 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-10 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-09 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-08 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-07 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-06 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-05 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-04 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-03 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-02 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-10-01 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-30 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-29 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-28 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-27 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-26 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-25 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-24 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-23 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-22 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-21 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-20 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-19 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-18 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-17 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-16 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-15 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-14 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-13 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-12 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-11 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-10 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-09 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-08 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-07 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-06 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-05 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-04 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-03 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-02 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-09-01 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-31 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-30 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-29 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-28 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-27 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-26 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-25 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-24 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-23 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-22 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-21 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-20 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-19 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-18 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-17 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-16 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-15 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-14 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-13 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-12 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-11 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-10 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-09 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-08 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-07 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-06 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-05 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-04 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-03 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-02 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-08-01 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-31 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-30 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-29 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-28 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-27 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-26 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-25 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-24 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-23 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-22 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-21 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-20 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-19 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-18 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-17 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-16 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-15 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-14 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-13 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-12 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-11 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-10 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-09 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-08 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-07 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-06 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-05 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-04 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-03 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-02 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-07-01 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-30 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-29 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-28 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-27 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-26 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-25 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-24 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-23 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-22 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-21 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-20 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-19 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-18 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
2026-06-17 0.34 cfs (13%) HARMONY DITCH 1, 1897-05-03 · South Platte River · same source, at or above the calling point
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: 1435.

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 3774.00000 · never out of priority in these seasons
AprMayJunJulAugSep
middle right · admin 5418.00000 · never out of priority in these seasons
AprMayJunJulAugSep
most junior right · admin 51499.39575 · peaks at 10 of 11 seasons
AprMayJunJulAugSep
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 321 AF. Its most recent year on record, 2023, came in at 202 AF — 63% of that, and 4th lowest of the 15 years with a recorded volume.

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 recordDays recordedPeak (cfs)
1981 421 12th lowest of 15 · 131% of median 156 2.0
1982 321 8th lowest of 15 · 100% of median 118 2.0
1983 250 5th lowest of 15 · 78% of median 85 3.0
1984 312 7th lowest of 15 · 97% of median 97 2.0
1985 693 14th lowest of 15 · 216% of median 187 2.0
1986 698 15th lowest of 15 · 217% of median 198 2.0
1987 402 11th lowest of 15 · 125% of median 153 2.0
1988 603 13th lowest of 15 · 188% of median 262 2.4
1989 384 10th lowest of 15 · 120% of median 214 1.3
1990 304 6th lowest of 15 · 95% of median 192 1.5
1991 377 9th lowest of 15 · 117% of median 245 1.3
1992 145 2nd lowest of 15 · 45% of median 147 1.0
1993 40 1st lowest of 15 · 12% of median 40 1.0
2022 185 3rd lowest of 15 · 58% of median 184 1.3
2023 202 4th lowest of 15 · 63% of median 304 1.4

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 13 right(s), seniority decoded
diversion record stale 4676 measured days, but newest is 1067 day(s) before the data's end (target 450)
record continuity patchy 40% of the irrigation seasons in 1969-2023 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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