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CASTLE ROCK NT DEN WL FLD

Structure dossier · WDID 0804011 · WF · DENVER · DWR record

Castle Rock Nt Den Wl Fld is a water structure on Denver 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 2026-10-19 21:11 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260928 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (26fd646) — every figure regenerates from this named code version and data image.

The record and the river

In short

CASTLE ROCK NT DEN WL FLD holds 21 decreed rights on DENVER. A call at CHATFIELD RESERVOIR on SOUTH PLATTE RIVER (1868-03-03) currently reaches it: fully called out. 5 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. It was a party to 2 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 (5 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 (other). Faint dots are the neighbouring water; click any to open it.

Current administration

● Fully called out — call at CHATFIELD RESERVOIR (SOUTH PLATTE RIVER, priority 1868-03-03).

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 1979-12-10 — 8061st 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: CASTLE ROCK NT LDA WL FLD (1979-12-10). Immediately behind: RECTOR WELL 112486 (1979-12-10).

Decreed rights (21)

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
47460.00000 1979-12-101979-12-31 122.5 AF 0.0 — All beneficial uses 93CW0010
47481.00000 1979-12-311979-12-31 50.0 AF 0.0 — All beneficial uses 93CW0010
48212.00000 1981-12-311981-12-31 724.0 AF 0.0 — Irrigation, Municipal +8 19CW3039
49186.00000 1984-08-311984-12-31 150.0 AF 0.0 — Irrigation, Municipal +8 19CW3039
49287.00000 1984-12-101980-12-31 103.5 AF 0.0 — All beneficial uses 93CW0010
49673.00000 1985-12-311985-12-31 224.5 AF 0.0 — All beneficial uses 93CW0010
50038.00000 1986-12-311986-12-31 827.0 AF 0.0 — Municipal, Augmentation +1 86CW0377
52654.00000 1994-02-281994-12-31 39.0 AF 0.0 — All beneficial uses 19CW3039
52865.00000 1994-09-271994-12-31 61.1 AF 0.0 — Municipal, Industrial +5 97CW0168
53477.00000 1996-05-311996-12-31 39.3 AF 0.0 — Irrigation, Municipal +8 19CW3039
54237.00000 1998-06-301998-12-31 163.0 AF 0.0 — Irrigation, Municipal +8 19CW3039
54328.00000 1998-09-291998-12-31 25.6 AF 0.0 — Irrigation, Municipal +8 19CW3039
54448.00000 1999-01-271999-12-31 11.6 AF 0.0 — Irrigation, Municipal +8 99CW0010
54632.00000 1999-07-301999-12-31 19.6 AF 0.0 — Irrigation, Municipal +8 19CW3039
54694.00000 1999-09-301999-12-31 14.5 AF 0.0 — All beneficial uses 19CW3039
55211.00000 2001-02-282001-12-31 21.1 AF 0.0 — Irrigation, Municipal +8 19CW3039
55911.00000 2003-01-292003-12-31 7.5 AF 0.0 — All beneficial uses 19CW3039
55941.00000 2003-02-282003-12-31 153.1 AF 0.0 — Irrigation, Commercial +8 19CW3039
56375.00000 2004-05-072004-12-31 15.3 AF 0.0 — Irrigation, Municipal +8 19CW3039
56387.00000 2004-05-192004-12-31 20.8 AF 0.0 — All beneficial uses 19CW3039
57390.00000 2007-02-162007-12-31 4.2 AF 0.0 — All beneficial uses 19CW3039

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 47460.00000 · peaks at 10 of 11 seasons
AprMayJunJulAugSep
middle right · admin 54237.00000 · peaks at 10 of 11 seasons
AprMayJunJulAugSep
most junior right · admin 57390.00000 · 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.

How good is our record of it?

Grade C (6/10 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 21 right(s), seniority decoded
diversion record absent no diversion records cached
record continuity unknown no record span to measure against
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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