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ROCKY MOUNTAIN DITCH

Structure dossier · WDID 0700652 · DITCH · CLEAR CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 21:09 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (4ab2507) — every figure regenerates from this named code version and data image.

Where it sits

Location as DWR records it. Faint dots are the neighbouring water; click any to open it.

Current administration

● Junior rights called out — call at SOUTH PLATTE RIVER COMPACT (SOUTH PLATTE RIVER, priority 1897-06-13).

● Junior rights called out — call at LITTLETON BOAT CHUTE NO 10 (SOUTH PLATTE RIVER, priority 1994-12-02).

● Junior rights called out — call at OSBORNE CAYWOOD DITCH (LITTLE THOMPSON RIVER, priority 1861-05-31).

● Junior rights called out — call at CANAL 3 DITCH (CACHE LA POUDRE RIVER, priority 1870-04-01).

● Junior rights called out — call at OGILVY DITCH (CACHE LA POUDRE RIVER, priority 1881-06-30).

Which of its rights are out of priority?

Under today's controlling call (SWADLEY LONGAN DITCH, priority 1861-04-09): 44 of this structure's 51 rights are out of priority now (call list is 12 days old). In the 5 past years most like this one (2018, 2024, 2025, 2022, 2017), 9 of the rights shown below were out at least one week in at least one analog year.

Right (priority)NowAnalog years outMajority out by
1860-02-25 3708 ● in priority 0 of 5 —
1860-05-16 3789 ● in priority 2 of 5 —
1860-05-19 3792 ● in priority 2 of 5 —
… 2 more rights between these …
1860-07-01 3835 ● in priority 3 of 5 —
1861-04-10 4118 ● in priority 4 of 5 2026-09-20
1861-05-13 4151 ● out 5 of 5 2026-08-30
1861-06-11 4180 ● out 5 of 5 2026-08-09
… 39 more rights between these …
1987-04-02 53326 ● out 5 of 5 2026-08-09
2009-07-31 58286 ● out 5 of 5 2026-08-09
2017-11-22 61322 ● out 5 of 5 2026-08-09
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 ROCKY MOUNTAIN DITCH around 2026-08-09 (the newest reading on file) — currently 40% of that gage's own median for this window — to pick the 5 most similar past years with complete administration records (1950–2026). 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 1860-02-25 — 11th most senior of the 1815 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: MANHART DITCH (1860-02-25). Immediately behind: WADSWORTH DITCH (1860-02-25).

On MAINSTEM at river mile 49.8, it is 49th of 107 down the reach. Immediately upstream: FARMERS HIGHLINE GAYNO RT TO CLEAR CREEK. Immediately downstream: CROKE CANAL.

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 (51)

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
3708.01860-02-251884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
3789.01860-05-161884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
3792.01860-05-191884-10-04 0.00.0 CSTOIRRMUNCOMINDRECFISDOMAUGWLD
3804.01860-05-311884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
3805.01860-06-011884-10-04 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
3835.01860-07-011884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
4118.01861-04-101884-10-04 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
4151.01861-05-131884-10-04 0.00.0 CSTOIRRMUNCOMINDRECFISDOMAUGWLD
4180.01861-06-111884-10-04 3.610.0 CIRRMUNCOMINDRECFIRDOMAUGRCH
4504.01862-05-011884-10-04 9.210.0 CIRRMUNINDRECDOM
4535.01862-06-011884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
4548.01862-06-141884-10-04 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
4568.01862-07-041884-10-04 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
4896.01863-05-281884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
4919.01863-06-201884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
5265.01864-05-311884-10-04 7.30.0 CIRRMUNINDRECDOM
5279.01864-06-141884-10-04 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
5285.01864-06-201884-10-04 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
5538.01865-02-281884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
5569.01865-03-311884-10-04 47.130.0 CIRRMUNINDRECDOM
5592.01865-04-231884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
5605.01865-05-061884-10-04 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
5615.01865-05-161884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
5785.01865-11-021884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
6884.01868-11-051884-10-04 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
7449.01870-05-241884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
7712.01871-02-111884-10-04 0.00.0 CSTOIRRMUNCOMINDRECFISDOMAUGWLD
8127.01872-04-011884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
8475.01873-03-151884-10-04 113.660.0 CIRRMUNINDRECDOM
10184.01877-11-181884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
10302.01878-03-161884-10-04 12.70.0 CIRRMUNINDRECDOM
10546.01878-11-151884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
11647.01881-11-201884-10-04 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
13240.01886-04-011895-10-09 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
16549.01895-04-231895-10-09 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
16718.081271872-04-011936-05-13 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
16718.101841877-11-181936-05-13 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
16718.132241886-03-161936-05-13 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
17621.01898-03-301936-05-13 190.00.0 CSTO
18415.01900-06-021936-05-13 0.00.0 CSTOIRRMUNCOMINDRECFISDOMAUGWLD
18574.01900-11-081936-05-13 190.00.0 CSTO
19055.01902-03-041936-05-13 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
20281.01905-07-121936-05-13 0.00.0 CIRRMUNCOMINDRECFISDOMAUGWLD
43829.412611962-12-201970-12-31 0.00.0 CIRRINDFIRDOM
50403.495461985-08-261988-12-31 0.00.0 CIRRFIRDOM
50753.01988-12-151988-12-31 0.00.0 CIRRINDFIRDOM
51696.01991-07-161991-12-31 25.00.0 CSTO
52595.524091993-06-281994-12-31 0.00.0 CSTOIRRMUNCOMINDRECFISDOMAUGWLD
53325.50131987-04-021996-12-31 0.00.0 CIRRMUNCOMINDRECFISFIRDOMSTKAUG
58286.02009-07-312009-12-31 0.00.0 CALL
61322.02017-11-222017-12-31 0.00.0 CIRRMUNCOMINDRECFIRDOMAUGRCH

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 8,545 AF. Its most recent year on record, 2025, came in at 7,086 AF — 83% of that, and 5th 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 10,034 13th lowest of 15 · 117% of median — 201 80.3
2012 5,354 1st lowest of 15 · 63% of median — 197 45.4
2013 12,206 15th lowest of 15 · 143% of median — 306 143.0
2014 9,190 11th lowest of 15 · 108% of median — 221 49.1
2015 6,702 4th lowest of 15 · 78% of median — 201 74.8
2016 8,450 7th lowest of 15 · 99% of median — 214 92.4
2017 8,545 8th lowest of 15 · 100% of median — 199 108.3
2018 6,081 2nd lowest of 15 · 71% of median — 264 62.8
2019 8,630 9th lowest of 15 · 101% of median — 255 89.9
2020 7,745 6th lowest of 15 · 91% of median — 214 103.8
2021 9,461 12th lowest of 15 · 111% of median — 217 95.9
2022 8,995 10th lowest of 15 · 105% of median — 246 55.1
2023 6,147 3rd lowest of 15 · 72% of median — 215 55.8
2024 10,192 14th lowest of 15 · 119% of median — 244 117.0
2025 7,086 5th lowest of 15 · 83% of median — 214 87.7

Call-derived yield: senior right divertible 100.0% of a median season / 100.0% dry-year.

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.