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GLACIER SUMMER CITY D
Structure dossier · WDID 0600660 · DITCH · NORTH BOULDER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:13 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 1902-12-31 — 219th 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: 0600953 (1902-03-04). Immediately behind: GLACIER SUMMER CITY RES (1903-01-01).
On NORTH BOULDER CREEK at river mile -11.5, it is 10th of 14 down the reach. Immediately upstream: SILVER LAKE. Immediately downstream: BOULDER CITY PL.
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 (2)
| 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 |
|---|---|---|---|---|---|---|---|
| 20890.19357 | 1902-12-31 | 1926-06-21 | 10.0 | 0.0 | C | IRR | |
| 20890.19358 | 1903-01-01 | 1926-06-21 | 10.0 | 0.0 | C | STO |
Legal record & documents
2 decreed actions on record across
1 court case:
CA6672.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA6672 | 2 | 1926-06-21 | 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 10 years on record)
In a median year this structure has a recorded diversion of 48 AF. Its most recent year on record, 2025, came in at 41 AF — 86% of that, and 5th lowest of the 10 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) |
|---|---|---|---|---|
| 1983 | 71 | 7th lowest of 10 · 150% of median | 37 | 1.0 |
| 1986 | 135 | 9th lowest of 10 · 284% of median | 35 | 2.0 |
| 1988 | 155 | 10th lowest of 10 · 326% of median | 53 | 1.5 |
| 1990 | 54 | 6th lowest of 10 · 114% of median | 28 | 1.0 |
| 2003 | 101 | 8th lowest of 10 · 213% of median | 35 | 1.5 |
| 2007 | 34 | 4th lowest of 10 · 72% of median | 10 | 2.0 |
| 2021 | 3 | 1st lowest of 10 · 6% of median | 6 | 0.5 |
| 2022 | 19 | 3rd lowest of 10 · 40% of median | 12 | 1.1 |
| 2024 | 7 | 2nd lowest of 10 · 15% of median | 8 | 0.7 |
| 2025 | 41 | 5th lowest of 10 · 86% of median | 22 | 1.2 |
Trends for this structure
Recorded use is falling over its last 10 recorded years (-2 AF/yr, Mann-Kendall p=0.049).
Its reference gage, SILVER LAKE OUTLET: 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 | 2 right(s), seniority decoded |
| diversion record | current | 246 measured days, newest 416 day(s) before the data's end (DWR publishes ~1 year in arrears) |
| record continuity | sparse | 3% of the irrigation seasons in 1983-2025 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.