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CHATFIELD RESERVOIR

Structure dossier · WDID 0803514 · RESERVOIR · SOUTH PLATTE RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 19:17 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (e70d0b5) — every figure regenerates from this named code version and data image.

Current administration

● In priority — no active call senior to this structure's rights affects its district (23 active call(s) checked).

Where it sits in line

Priority 1861-06-15 — 32nd most senior of the 21881 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: 0801005 (1861-06-15). Immediately behind: 0803983 (1861-06-15).

Decreed rights (61)

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. UnitsUsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on.Case
4184.01861-06-151889-10-18 0.00.0 CMUN
4229.01861-07-301883-12-10 0.00.0 CMUN
4260.01861-08-301883-12-10 0.00.0 CIRRMUNCOMINDRECFIRDOMSTKAUGCUR
4352.01861-11-301883-10-18 0.00.0 CIRRMUNCOMINDFIRDOMOTH
4869.01863-05-011913-05-22 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
4869.01863-05-011913-05-22 0.00.0 AIRRMUNCOMINDRECFISFIRDOMSTKAUG
5112.01863-12-301883-10-18 0.00.0 CIRRMUNCOMINDRECFISFIRDOMAUGPWR
5478.01864-12-301883-12-10 0.00.0 CMUN
5843.01865-12-301883-12-10 0.00.0 CIRRMUNCOMINDRECDOMSTKAUGCUROTH
5965.01866-05-011889-10-18 0.00.0 CMUN
6637.01868-03-031883-12-10 0.00.0 CIRRMUNCOMINDRECDOMAUGWLD
7659.01870-12-201930-06-16 0.00.0 CMUN
8645.01873-09-011889-10-18 0.00.0 CIRRMUNINDDOMCUROTH
8659.01873-09-151883-04-28 0.00.0 CMUN
8765.01873-12-301883-10-18 0.00.0 CIRRMUNCOMINDFIRDOMOTH
8918.01874-06-011889-10-18 0.00.0 CIRRMUNCOMINDRECFISFIRDOMCUROTH
9131.01874-12-311930-06-16 0.00.0 CMUN
9252.01875-05-011889-10-18 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKOTH
10348.01878-05-011889-10-18 0.00.0 CIRRMUNCOMINDRECFISDOMSTKAUGRCH
10348.01878-05-011889-10-18 0.00.0 AIRRMUNCOMINDRECFISDOMSTKAUGRCH
10449.01878-08-101889-10-18 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKCUR
10480.01878-09-101930-06-16 0.00.0 CMUN
10744.01879-06-011889-10-18 0.00.0 CMUN
11139.01880-06-301930-06-16 0.00.0 CMUN
11170.01880-07-311889-10-18 0.00.0 AIRRMUNCOMINDRECFISDOMSTKAUGRCH
11170.01880-07-311889-10-18 0.00.0 CIRRMUNCOMINDRECFISDOMSTKAUGRCH
11414.01881-04-011889-10-18 0.00.0 CIRRMUNCOMINDRECFISDOMSTKAUGRCH
11414.01881-04-011889-10-18 0.00.0 AIRRMUNCOMINDRECFISDOMSTKAUGRCH
11451.01881-05-081889-10-18 0.00.0 CMUN
11809.01882-05-011889-10-18 0.00.0 CIRRMUNCOMINDRECFISFIRDOMOTHALL
12924.01885-05-201889-10-18 0.00.0 CMUNALL
13707.01887-07-121889-10-18 0.00.0 CIRRMUNINDDOMCUROTH
14041.01888-06-101889-10-18 0.00.0 CIRRMUNINDDOMCUROTH
14519.01889-10-011930-06-16 0.00.0 CMUN
14536.129361885-06-011913-05-22 0.00.0 CIRRMUNINDDOMOTHALL
15585.01892-09-011930-06-16 0.00.0 CMUN
18018.01899-05-011930-06-16 0.00.0 CMUN
22254.01910-12-061930-06-16 0.00.0 CMUN
45804.01975-05-291975-12-31 24000.00.0 AIRRMUNCOMRECDOMAUGPWR
46020.417141964-03-171976-12-31 0.00.0 CMUN
46748.01977-12-281977-12-31 12523.0198677.0 AIRRMUNCOMINDRECFISFIRDOMAUGPWR
49179.01984-08-241983-12-31 0.026400.0 AIRRMUNCOMINDRECFISFIRDOMSTKAUG
49193.01984-09-071984-12-31 0.06000.0 AIRRMUNCOMINDRECFISDOMSTKOTHRCH
49437.01985-05-091985-12-31 0.02500.0 AIRRMUNINDRECDOMAUG
49582.01985-10-011985-12-31 0.0800.0 AIRRMUNCOMINDRECFISFIRDOMSTKOTH
49598.01985-10-171985-12-31 0.00.0 CIRRMUNCOMINDRECFISDOMSTKAUGWLD
51079.01989-11-061989-12-31 2000.00.0 AMUN
51312.01990-06-271990-12-31 0.075.0 AFISAUGWLD
52623.01994-01-281994-12-31 0.02000.0 AFISAUGWLD
56490.02004-08-302004-12-31 0.00.0 CMUNALL
56490.02004-08-302004-12-31 0.00.0 AMUNALL
56561.02004-11-092004-12-31 0.01000.0 AMUN
56977.02005-12-302005-12-31 0.00.0 CAUGCURRCH
58074.566392005-01-262009-12-31 0.02000.0 ACOMRECFISAUGWLD
58438.02009-12-302009-12-31 0.00.0 CMUN
59664.02013-05-092013-12-31 45.2985.71 AIRRMUNCOMINDRECFISFIRDOMSTKAUG
60586.02015-11-172015-12-31 0.09641.0 AIRRINDRECFISAUGWLD
60748.02016-04-272016-12-31 0.02000.0 AMUNINDAUG
61420.02018-02-282018-12-31 0.0500.0 AMUN
61420.02018-02-282018-12-31 0.00.0 CMUN
62091.02019-12-312019-12-31 0.00.0 CMUN

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 27,289 AF. Its most recent year on record, 2026, came in at 5,398 AF — 20% 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)
2012 37,212 11th lowest of 15 · 136% of median 11,695 366 240.9
2013 42,176 13th lowest of 15 · 155% of median 12,704 361 446.6
2014 21,320 5th lowest of 15 · 78% of median 6,768 286 463.6
2015 29,805 9th lowest of 15 · 109% of median 5,185 316 497.3
2016 20,709 4th lowest of 15 · 76% of median 1,428 300 231.2
2017 27,289 8th lowest of 15 · 100% of median 98 298 433.1
2018 25,014 7th lowest of 15 · 92% of median 174 355 151.8
2019 21,623 6th lowest of 15 · 79% of median 214 335 585.0
2020 29,844 10th lowest of 15 · 109% of median 8,114 350 207.3
2021 37,348 12th lowest of 15 · 137% of median 10,225 365 500.4
2022 18,873 2nd lowest of 15 · 69% of median 4,906 365 151.1
2023 105,689 15th lowest of 15 · 387% of median 8,670 365 1950.1
2024 53,398 14th lowest of 15 · 196% of median 17,827 366 764.9
2025 19,600 3rd lowest of 15 · 72% of median 9,111 365 67.5
2026 5,398 1st lowest of 15 · 20% of median 5,807 304 39.5

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.