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AGRICULTURAL DITCH

Structure dossier · WDID 0700502 · DITCH · CLEAR CREEK · DWR record

Where this page's figures come from

Generated 2026-08-28 14:53 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (5cd37f7) — every figure regenerates from this named code version and data image.

In short

AGRICULTURAL DITCH holds 58 decreed rights on CLEAR CREEK. As of 2026-08-09, 51 of them are out of priority under a call at admin 3835.00000 placed by WANNAMAKER DITCH. Its 7 most senior rights, back to 1860-02-25, keep diverting. In a median year over its last 15 recorded years it diverts 5,806 acre-feet. That use is rising by about 469.8 acre-feet a year over 15 years (p=0.0075331703386321). It was a party to 21 court cases that also touched 35 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 SWADLEY LONGAN DITCH (RALSTON CREEK, priority 1861-04-09).

● Junior rights called out — call at CLEAR CR PLATTE RIVER D (CLEAR CREEK, priority 1861-11-01).

● Junior rights called out — call at WANNAMAKER DITCH (CLEAR CREEK, priority 1860-06-30).

● Junior rights called out — call at LOWER LATHAM DITCH (SOUTH PLATTE RIVER, priority 1885-11-20).

Which of its rights are out of priority?

Under today's controlling call (WANNAMAKER DITCH, priority 1860-06-30): 51 of this structure's 58 rights are out of priority now. (9 call(s) state no district and sit outside this one — not judged, not assumed.) In the 5 past years most like this one (2025, 2024, 2023, 2022, 2021), 5 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
1860-05-15 3788 ● in priority 0 of 5
1860-05-16 3789 ● in priority 0 of 5
… 2 more rights between these …
1860-06-14 3818 ● in priority 0 of 5
1860-07-01 3835 ● in priority 0 of 5
1860-08-31 3896 ● out 3 of 5
1861-05-13 4151 ● out 4 of 5 2026-09-20
… 46 more rights between these …
1999-12-30 54785 ● out 5 of 5 2026-08-09
2009-07-31 58286 ● out 5 of 5 2026-08-09
1955-10-05 60996 ● 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 COORS IND DITCH around 2026-08-09 (the newest reading on file) — currently 93% of that gage's own median for this window — to pick the 5 most similar past years with complete administration records (2004–2026). 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 1860-02-252nd 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: 0700619 (1859-12-31). Immediately behind: CHURCH DITCH (1860-02-25).

On MAINSTEM at river mile 48.2, it is 36th of 107 down the reach. Immediately upstream: GOLDEN CITY WATER WORKS RESERVOIR. Immediately downstream: COORS INDUSTRIAL 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 (59)

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. Decreed forWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on.Case
3708.00000 1860-02-251884-10-04 0.0 C 0.0 Irrigation, Municipal +8
3788.00000 1860-05-151884-10-04 1.64 C 0.0 Storage, Irrigation +8
3789.00000 1860-05-161884-10-04 0.0 C 0.0 Irrigation, Municipal +8
3792.00000 1860-05-191884-10-04 0.675 C 0.0 Storage, Irrigation +8
3804.00000 1860-05-311884-10-04 3.83 C 0.0 Storage, Irrigation +8
3818.00000 1860-06-141884-10-04 1.12 C 0.0 Storage, Irrigation +8
3835.00000 1860-07-011884-10-04 0.0 C 0.0 Irrigation, Municipal +8
3896.00000 1860-08-311884-10-04 0.0 C 0.0 Municipal
4151.00000 1861-05-131884-10-04 0.0 C 0.0 Storage, Irrigation +8
4152.00000 1861-05-141884-10-04 0.098 C 0.0 Storage, Irrigation +8
4171.00000 1861-06-021884-10-04 1.12 C 0.0 Storage, Irrigation +8
4180.00000 1861-06-111884-10-04 0.39 C 0.0 Storage, Irrigation +8
4535.00000 1862-06-011884-10-04 0.15 C 0.0 Storage, Irrigation +8
4554.00000 1862-06-201884-10-04 0.0 C 0.0 Municipal
4896.00000 1863-05-281884-10-04 0.0 C 0.0 Irrigation, Municipal +8
4919.00000 1863-06-201884-10-04 0.0 C 0.0 Irrigation, Municipal +8
5295.00000 1864-06-301884-10-04 0.0 C 0.0 Municipal
5538.00000 1865-02-281884-10-04 0.0 C 0.0 Irrigation, Municipal +8
5592.00000 1865-04-231884-10-04 0.0 C 0.0 Irrigation, Municipal +8
5615.00000 1865-05-161884-10-04 0.163 C 0.0 Storage, Irrigation +8
5785.00000 1865-11-021884-10-04 0.0 C 0.0 Irrigation, Municipal +8
7449.00000 1870-05-241884-10-04 0.0 C 0.0 Irrigation, Municipal +8
7712.00000 1871-02-111884-10-04 0.0 C 0.0 Storage, Irrigation +8
8127.00000 1872-04-011884-10-04 0.0 C 0.0 Irrigation, Municipal +8
9121.00000 1874-12-211884-10-04 101.54 C 0.0 Storage, Irrigation +8
10184.00000 1877-11-181884-10-04 0.0 C 0.0 Irrigation, Municipal +8
10546.00000 1878-11-151884-10-04 0.0 C 0.0 Irrigation, Municipal +8
11647.00000 1881-11-201884-10-04 0.0 C 0.0 Irrigation, Municipal +8
12136.00000 1883-03-241884-10-04 48.46 C 0.0 Storage, Irrigation +8
13240.00000 1886-04-011895-10-09 0.0 C 0.0 Irrigation, Municipal +8
16549.00000 1895-04-231895-10-09 0.0 C 0.0 Irrigation, Municipal +8
16718.08127 1872-04-011936-05-13 0.0 C 0.0 Irrigation, Municipal
16718.09682 1876-07-041936-05-13 24.0 C 0.0 Storage
16718.10014 1877-06-011936-05-13 10.0 C 0.0 Storage
16718.10184 1877-11-181936-05-13 0.0 C 0.0 Municipal, All beneficial uses
16718.12053 1882-12-311936-05-13 38.4 C 0.0 Storage
16718.13224 1886-03-161936-05-13 0.0 C 0.0 Irrigation, Municipal +8
16718.13966 1888-03-271936-05-13 55.0 C 0.0 Storage, Irrigation +8
16718.14107 1888-08-151936-05-13 50.0 C 0.0 Storage
16718.14121 1888-08-291936-05-13 38.4 C 0.0 Storage
16718.14287 1889-02-111936-05-13 16.0 C 0.0 Storage
16718.15341 1892-01-011936-05-13 100.0 C 0.0 Storage
18415.00000 1900-06-021936-05-13 910.0 A 0.0 Storage, Irrigation +8
18415.00000 1900-06-021936-05-13 13.0 C 0.0 Storage, Irrigation +8
19055.00000 1902-03-041936-05-13 0.0 C 0.0 Irrigation, Municipal +8
20088.00000 1904-12-311996-12-31 0.0 C 0.0 Irrigation
20281.00000 1905-07-121936-05-13 0.0 C 0.0 Municipal
31999.00000 1937-08-111989-12-31 0.0 C 0.0 Storage, Irrigation +4
50403.49546 1985-08-261988-12-31 0.0 C 0.0 Irrigation, Fire +1
50753.00000 1988-12-151988-12-31 0.0 C 0.0 Irrigation, Industrial +2
51132.00000 1989-12-291989-12-31 0.0 C 0.0 Irrigation, Municipal +5
51696.00000 1991-07-161991-12-31 25.0 C 0.0 Storage
52409.00000 1993-06-281993-12-31 0.0 C 0.0 Irrigation, Municipal +7
52595.52409 1993-06-281994-12-31 0.0 C 0.0 Storage, Irrigation +8
53325.50130 1987-04-021996-12-31 0.0 C 0.0 Irrigation, Municipal +8
53508.00000 1996-07-011996-12-31 10.59 C 39.41 C Storage
54785.00000 1999-12-301999-12-31 0.0 C 0.0 Augmentation
58286.00000 2009-07-312009-12-31 0.0 C 0.0 All beneficial uses
60996.38628 1955-10-052017-12-31 0.0 C 7.5 C Recreation, Wildlife

How often is it out of priority?

Across the 8 seasons whose call record is complete enough to judge this structure (2017, 2018, 2020, 2021, 2022, 2023, 2024, 2026), week by week from April. Read these as counts, not rates — 8 seasons is a short record.

most senior right · admin 3708.00000 · never out of priority in these seasons
AprMayJunJulAugSep
middle right · admin 13240.00000 · peaks at 8 of 8 seasons
AprMayJunJulAugSep
most junior right · admin 60996.38628 · peaks at 8 of 8 seasons
AprMayJunJulAugSep
Why only 8 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 — 15 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 5,806 AF. Its most recent year on record, 2025, came in at 9,536 AF — 164% of that, and 10th 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 3,761 1st lowest of 15 · 65% of median 182 31.9
2012 4,278 5th lowest of 15 · 74% of median 214 24.7
2013 5,806 8th lowest of 15 · 100% of median 214 43.1
2014 4,802 7th lowest of 15 · 83% of median 192 22.2
2015 4,085 2nd lowest of 15 · 70% of median 134 24.3
2016 4,098 3rd lowest of 15 · 71% of median 172 27.5
2017 4,106 4th lowest of 15 · 71% of median 205 25.3
2018 4,474 6th lowest of 15 · 77% of median 208 35.9
2019 9,534 9th lowest of 15 · 164% of median 217 38.2
2020 10,593 15th lowest of 15 · 182% of median 228 58.1
2021 10,138 13th lowest of 15 · 175% of median 216 48.5
2022 10,451 14th lowest of 15 · 180% of median 276 39.4
2023 9,710 11th lowest of 15 · 167% of median 311 40.8
2024 9,868 12th lowest of 15 · 170% of median 216 39.2
2025 9,536 10th lowest of 15 · 164% of median 215 39.4

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

How good is our record of it?

Grade A (10/10 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 59 right(s), seniority decoded
diversion record current 15960 measured days, newest 282 day(s) before the data's end (DWR publishes ~1 year in arrears)
record continuity continuous 99% of the irrigation seasons in 1950-2025 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.