Hydrohistorian
← My Water · Print / save as PDF
SOUTH BOULDER CANON DITCH
Structure dossier · WDID 0600593 · DITCH · SOUTH BOULDER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 23:22 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (96d5528) — 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: no administrative call record for this basin.
Where it sits in line
Priority 1859-10-01 — 8th most senior of the 1867 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: S BOULDER BEAR CR DITCH (1859-10-01). Immediately behind: LAFAYETTE PL (1859-10-01).
On SOUTH BOULDER CREEK at river mile 14.2, it is 23rd of 58 down the reach. Immediately upstream: HODGSON HARRIS RES. Immediately downstream: MCGINN 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 (22)
| 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 |
|---|---|---|---|---|---|---|---|
| 3561.0 | 1859-10-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGWLD | |
| 4869.0 | 1863-05-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGOTHWLD | |
| 5511.0 | 1865-02-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGOTHWLD | |
| 5570.0 | 1865-04-01 | 1882-06-02 | 0.65 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMOTH | |
| 5935.0 | 1866-04-01 | 1882-06-02 | 0.34 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMOTH | |
| 5979.0 | 1866-05-15 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGOTHWLD | |
| 5996.0 | 1866-06-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGOTHWLD | |
| 7440.0 | 1870-05-15 | 1882-06-02 | 26.37 | 0.0 | C | IRR | |
| 7457.0 | 1870-06-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGWLD | |
| 7579.0 | 1870-10-01 | 1882-06-02 | 0.46 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMOTH | |
| 7805.0 | 1871-05-15 | 1882-06-02 | 39.63 | 0.0 | C | IRR | |
| 8141.0 | 1872-04-15 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECDOMOTH | |
| 8553.0 | 1873-06-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECDOMOTH | |
| 11611.0 | 1881-10-15 | 1907-03-13 | 5.0 | 0.0 | C | STO | |
| 20188.10866 | 1879-10-01 | 1907-03-13 | 28.0 | 0.0 | C | STO | |
| 20188.11049 | 1880-04-01 | 1907-03-13 | 40.0 | 0.0 | C | STO | |
| 20188.11079 | 1880-05-01 | 1907-03-13 | 28.0 | 0.0 | C | STO | |
| 20188.1251 | 1884-04-01 | 1907-03-13 | 40.0 | 0.0 | C | STO | |
| 20188.15096 | 1891-05-01 | 1907-03-13 | 10.0 | 0.0 | C | STO | |
| 20188.1598 | 1893-10-01 | 1907-03-13 | 15.0 | 0.0 | C | STO | |
| 20890.16071 | 1893-12-31 | 1926-06-21 | 15.0 | 0.0 | C | STO | |
| 25321.0 | 1919-04-30 | 1926-06-21 | 10.0 | 0.0 | C | STO |
Legal record & documents
36 decreed actions on record across
10 court cases:
97CW0195, 19CW3020, 90CW0108, CA6672, CA4842, CA8470, CA1286, 82CW0052, 80CW0469, 80CW0468.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
97CW0195 | 3 | 1997-12-31 | O, S |
19CW3020 | 1 | 1997-12-31 | S |
90CW0108 | 8 | 1990-12-31 | O, S |
CA6672 | 2 | 1926-06-21 | S |
CA4842 | 7 | 1907-03-13 | O, S |
CA8470 | 1 | 1882-06-02 | O |
CA1286 | 2 | 1882-06-02 | O |
82CW0052 | 3 | 1882-06-02 | O |
80CW0469 | 2 | 1882-06-02 | O |
80CW0468 | 7 | 1882-06-02 | O |
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 1,592 AF. Its most recent year on record, 2025, came in at 1,592 AF — 100% of that, and 8th 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 | 1,706 | 11th lowest of 15 · 107% of median | 59 | 24.0 |
| 2010 | 2,027 | 15th lowest of 15 · 127% of median | 65 | 28.0 |
| 2011 | 2,018 | 14th lowest of 15 · 127% of median | 90 | 31.5 |
| 2012 | 389 | 1st lowest of 15 · 24% of median | 30 | 13.8 |
| 2013 | 2,003 | 13th lowest of 15 · 126% of median | 49 | 29.1 |
| 2014 | 1,670 | 10th lowest of 15 · 105% of median | 78 | 22.0 |
| 2015 | 716 | 2nd lowest of 15 · 45% of median | 47 | 13.9 |
| 2016 | 1,198 | 6th lowest of 15 · 75% of median | 60 | 14.2 |
| 2017 | 1,293 | 7th lowest of 15 · 81% of median | 78 | 15.4 |
| 2018 | 1,083 | 3rd lowest of 15 · 68% of median | 45 | 22.4 |
| 2019 | 1,848 | 12th lowest of 15 · 116% of median | 75 | 20.0 |
| 2020 | 1,145 | 5th lowest of 15 · 72% of median | 75 | 18.7 |
| 2022 | 1,606 | 9th lowest of 15 · 101% of median | 62 | 21.7 |
| 2024 | 1,102 | 4th lowest of 15 · 69% of median | 62 | 16.3 |
| 2025 | 1,592 | 8th lowest of 15 · 100% of median | 55 | 20.1 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
Its reference gage, SCHEARER DITCH: no clear flow trend.
How good is our record of it?
Grade B (8/10 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 | 22 right(s), seniority decoded |
| diversion record | current | 4863 measured days, newest 398 day(s) before the data's end (DWR publishes ~1 year in arrears) |
| record continuity | sparse | 30% 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.