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DENVER FILTER PLT FLUME

Structure dossier · WDID 0801006 · PUMP · SOUTH PLATTE RIVER · DWR record

Denver Filter Plt Flume 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 2026-10-14 14:50 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
LAST CHANCE PUMP STATION LCPUMPCO 14.5 cfs 2018–2026, 2,633 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

14.5 cfs as of 2026-10-14 12:00 (2.8 h ago)

Provisional 15-minute telemetry from LCPUMPCO ↗ (LAST CHANCE PUMP STATION). 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

DENVER FILTER PLT FLUME holds 5 decreed rights on SOUTH PLATTE RIVER. As of 2026-10-02, 1 of them are out of priority under a call at admin 5112.00000 placed by SOUTH PLATTE RIVER AT WATERTON. Its 4 most senior rights, back to 1860-12-28, keep diverting. 5 further calls state no district and sit outside this one, so they are counted here rather than assumed either way. In a median year over its last 15 recorded years it diverts 2,072 acre-feet. It was a party to 6 court cases that also touched 22 other structures.

Assembled from the figures on this page — every number above is checked against them before it is shown (11 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 SOUTH PLATTE RIVER AT WATERTON (SOUTH PLATTE RIVER, priority 1863-12-30).

Which of its rights are out of priority?

Under today's controlling call (SOUTH PLATTE RIVER AT WATERTON, priority 1863-12-30): 1 of this structure's 5 rights are out of priority now. (5 call(s) state no district and sit outside this one — not judged, not assumed.) In the 5 past years most like this one (2025, 2020, 2021, 2023, 2022), 0 of the rights shown below were out at least one week in at least one analog year.

Right (priority)NowAnalog years outMajority out by
1860-12-28 4015 ● in priority 0 of 5 —
1861-08-30 4260 ● in priority 0 of 5 —
1862-11-30 4717 ● in priority 0 of 5 —
1863-12-30 5112 ● in priority 0 of 5 —
1865-12-30 5843 ● out 0 of 5 —
How this table is built, and what it is not

“Now” compares each right's admin number with today's most senior applicable active call. The outlook uses flows at LAST CHANCE PUMP STATION around 2026-10-02 (the newest reading on file) — currently 209% of that gage's own median for this window — to pick the 5 most similar past years with complete administration records (2011–2026). Only calls that verifiably apply count: DWR's own district statements in the call's set comments, a caller located in this district, or — on the same stream, where DWR records both stream miles (measured from the mouth) — a caller DOWNSTREAM of this structure. An upstream senior cannot demand water this diversion never deprives it of. Calls that state nothing and sit elsewhere are counted as unjudged rather than assumed, which also means the verified record is shorter than the raw one: early calls rarely state districts. For each week it finds the most senior call then in force; a right is out in that week exactly when that call is senior to it, which is why one line prices every right and juniors can be out while seniors keep diverting. “Majority out by” is the first week out in more than half the analog years. A frequency among named historical years, not a probability from a model, and not a forecast of what the division engineer will do. It says how often years whose flow resembled this one were under a call senior to this right in a given week. Snowpack, storage, and the actual administrative decisions of a given season are not modelled. Check the analog years listed: if they do not resemble this year to you, the outlook does not either.

Where it sits in line

Priority 1860-12-28 — 15th 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: DENVER CONDUIT NO 20 (1860-12-28). Immediately behind: DENVER FOOTHILLS PL 26 (1860-12-28).

On MAINSTEM at river mile 83.8, it is 593rd of 890 down the reach. Immediately upstream: HIGHLINE CNL. Immediately downstream: PLATTE CANON DITCH.

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 (6)

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
4015.00000 1860-12-281883-12-10 0.0 AF 0.0 1790.28 AF Irrigation, Municipal 20CW3200
4015.00000 1860-12-281883-12-10 0.0 cfs 0.0 6.5 cfs Irrigation, Municipal 20CW3200
4260.00000 1861-08-301883-12-10 0.0 cfs 0.0 8.08 cfs Municipal 90CW0172
4717.00000 1862-11-301883-12-10 0.0 cfs 0.0 2.4 cfs Irrigation, Municipal +6 86CW0014
5112.00000 1863-12-301883-12-10 0.0 cfs 0.0 0.83 cfs Irrigation, Municipal +8 92CW0014, CA0973
5843.00000 1865-12-301883-12-10 0.0 cfs 0.0 0.82 cfs Municipal 90CW0172

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 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 4015.00000 · never out of priority in these seasons
AprMayJunJulAugSep
middle right · admin 4717.00000 · never out of priority in these seasons
AprMayJunJulAugSep
most junior right · admin 5843.00000 · peaks at 1 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 2,072 AF. Its most recent year on record, 2026, came in at 6,497 AF — 314% of that, and 12th 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)
1980 121 2nd lowest of 15 · 6% of median 25 3.0
1981 4 1st lowest of 15 · 0% of median 3 1.0
2011 1,012 3rd lowest of 15 · 49% of median 36 17.0
2012 9,939 14th lowest of 15 · 480% of median 346 18.0
2013 6,588 13th lowest of 15 · 318% of median 202 30.9
2016 1,294 4th lowest of 15 · 62% of median 19 111.1
2017 4,591 11th lowest of 15 · 222% of median 112 81.1
2018 25,612 15th lowest of 15 · 1236% of median 239 278.5
2020 4,548 10th lowest of 15 · 220% of median 163 27.0
2021 2,413 9th lowest of 15 · 116% of median 140 15.2
2022 2,072 8th lowest of 15 · 100% of median 168 15.0
2023 1,639 5th lowest of 15 · 79% of median 365 24.0
2024 1,657 6th lowest of 15 · 80% of median 366 15.9
2025 2,070 7th lowest of 15 · 100% of median 365 15.4
2026 6,497 12th lowest of 15 · 314% of median 287 30.5

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 6 right(s), seniority decoded
diversion record current 3336 measured days, newest -12 day(s) before the data's end (DWR publishes ~1 year in arrears)
record continuity sparse 25% of the irrigation seasons in 1963-2026 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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