Hydrohistorian
← My Water · Print / save as PDF
LEFT HAND DITCH
Structure dossier · WDID 0500603 · 1 · SOUTH SAINT VRAIN CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:33 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (2deb1d7) — 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 1863-06-01 — 66th most senior of the 1289 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: BADER DITCH 1 & 2 (1863-05-31). Immediately behind: FARMERS DITCH (1863-06-01).
Decreed rights (6)
| 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 |
|---|---|---|---|---|---|---|---|
| 4900.0 | 1863-06-01 | 1882-06-02 | 34.5904 | 0.0 | C | IRRCOMINDRECFISDOMAUGWLD | |
| 7457.0 | 1870-06-01 | 1882-06-02 | 578.5297 | 0.0 | C | IRRCOMINDRECFISDOMAUGWLD | |
| 11841.10836 | 1879-09-01 | 1907-03-13 | 14.09 | 0.0 | C | STO | |
| 19861.0 | 1904-05-18 | 1907-03-17 | 14.09 | 0.0 | C | STO | |
| 55669.0 | 2002-06-01 | 2002-12-31 | 0.0 | 0.0 | C | MUN | |
| 55870.0 | 2002-12-19 | 2002-12-31 | 0.0 | 0.0 | C | MUN |
Legal record & documents
30 decreed actions on record across
11 court cases:
02CW0321, CA4790, W7596, CA18398, 98CW0313, 93CW0028, 87CW0127, 85CW0117, CA1284, 11CW0032 and 1 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
02CW0321 | 2 | 2002-12-31 | O |
CA4790 | 2 | 1907-03-17 | S |
W7596 | 2 | 1882-12-02 | O |
CA18398 | 2 | 1882-12-02 | O |
98CW0313 | 2 | 1882-12-02 | O |
93CW0028 | 4 | 1882-12-02 | O |
87CW0127 | 2 | 1882-12-02 | O |
85CW0117 | 4 | 1882-12-02 | O |
CA1284 | 2 | 1882-06-02 | O |
11CW0032 | 4 | 1882-06-02 | O |
02CW0334 | 4 | 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 13,165 AF. Its most recent year on record, 2024, came in at 12,542 AF — 95% of that, and 6th 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) |
|---|---|---|---|---|
| 1960 | 1,198 | 2nd lowest of 15 · 9% of median | 48 | 34.0 |
| 1970 | 755 | 1st lowest of 15 · 6% of median | 50 | 20.0 |
| 1992 | 11,645 | 4th lowest of 15 · 88% of median | 164 | 148.5 |
| 2013 | 18,125 | 15th lowest of 15 · 138% of median | 159 | 297.0 |
| 2014 | 14,560 | 11th lowest of 15 · 111% of median | 156 | 141.0 |
| 2015 | 13,569 | 10th lowest of 15 · 103% of median | 156 | 134.0 |
| 2016 | 11,312 | 3rd lowest of 15 · 86% of median | 146 | 163.0 |
| 2017 | 18,022 | 14th lowest of 15 · 137% of median | 160 | 180.0 |
| 2018 | 13,457 | 9th lowest of 15 · 102% of median | 155 | 190.0 |
| 2019 | 14,591 | 12th lowest of 15 · 111% of median | 153 | 146.0 |
| 2020 | 12,848 | 7th lowest of 15 · 98% of median | 152 | 193.0 |
| 2021 | 12,455 | 5th lowest of 15 · 95% of median | 162 | 159.0 |
| 2022 | 13,165 | 8th lowest of 15 · 100% of median | 167 | 165.0 |
| 2023 | 15,854 | 13th lowest of 15 · 120% of median | 169 | 110.0 |
| 2024 | 12,542 | 6th lowest of 15 · 95% of median | 162 | 204.5 |
Call-derived yield: senior right divertible 100.0% of a median season / 44.4% dry-year.
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
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 | 6 right(s), seniority decoded |
| diversion record | present | 2348 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 16% of the irrigation seasons in 1955-2024 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.