Hydrohistorian
← My Water · Print / save as PDF
RIDDLE DITCH
Structure dossier · WDID 4700855 · 1 · POTTER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:12 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — 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.
Which of its rights are out of priority?
Not computable for this structure: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it.
Where it sits in line
Priority 1908-04-06 — 448th most senior of the 1262 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: BRIGGS BOHN DITCH (1907-10-14). Immediately behind: CLEVELAND D OWL CK EXT (1908-04-29).
Decreed rights (1)
| 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. | Units | UsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 21366.2128 | 1908-04-06 | 1913-01-06 | 11.0 | 0.0 | C | IRR | 353 |
Legal record & documents
1 decreed actions on record across
1 court case:
CA2891.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA2891 | 1 | 1913-01-06 | S |
DWR's own records for this structure: net amounts · transactions & adjudication history · scanned decrees (search a case number there for the imaged document). On this site: the district's full legal picture →
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 919 AF. Its most recent year on record, 2024, came in at 99 AF — 11% of that, and 1st lowest of the 15 years with a recorded volume.
| Year | Diverted (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 record | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 2009 | 1,007 | 9th lowest of 15 · 110% of median | 100 | 11.3 |
| 2010 | 1,276 | 13th lowest of 15 · 139% of median | 99 | 13.6 |
| 2011 | 1,685 | 15th lowest of 15 · 183% of median | 150 | 26.9 |
| 2013 | 276 | 5th lowest of 15 · 30% of median | 47 | 5.7 |
| 2014 | 1,119 | 11th lowest of 15 · 122% of median | 80 | 14.2 |
| 2015 | 1,191 | 12th lowest of 15 · 130% of median | 93 | 21.3 |
| 2016 | 1,350 | 14th lowest of 15 · 147% of median | 81 | 8.5 |
| 2017 | 919 | 8th lowest of 15 · 100% of median | 120 | 7.9 |
| 2018 | 536 | 6th lowest of 15 · 58% of median | 57 | 5.0 |
| 2019 | 1,084 | 10th lowest of 15 · 118% of median | 88 | 14.3 |
| 2020 | 275 | 4th lowest of 15 · 30% of median | 45 | 4.7 |
| 2021 | 131 | 2nd lowest of 15 · 14% of median | 28 | 3.8 |
| 2022 | 684 | 7th lowest of 15 · 74% of median | 133 | 2.8 |
| 2023 | 143 | 3rd lowest of 15 · 16% of median | 18 | 4.2 |
| 2024 | 99 | 1st lowest of 15 · 11% of median | 62 | 0.8 |
Trends for this structure
Recorded use is falling over its last 15 recorded years (-75 AF/yr, Mann-Kendall p=0.006).
How good is our record of it?
Grade B (7/10 points) — the components below are the finding; the letter alone is not.
The rubric, component by component
| Check | State | Detail |
|---|---|---|
| identity | complete | name, type, and water source all on file |
| decreed rights | on file | 1 right(s), seniority decoded |
| diversion record | present | 3522 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 30% of the irrigation seasons in 1969-2024 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.