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PORTNER RESERVOIR
Structure dossier · WDID 0303773 · 3 · FOSSIL CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:12 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 1861-06-01 — 29th most senior of the 2961 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: WINDSOR RES (1861-06-01). Immediately behind: FOSSIL CREEK RES (1861-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 4170.0 | 1861-06-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 6026.0 | 1866-07-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 6483.0 | 1867-10-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 6727.0 | 1868-06-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7092.0 | 1869-06-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7184.0 | 1869-09-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7761.0 | 1871-04-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7953.0 | 1871-10-10 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8218.0 | 1872-07-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8237.0 | 1872-07-20 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8492.0 | 1873-04-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8645.0 | 1873-09-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 9236.0 | 1875-04-15 | 1882-04-11 | 0.0 | 0.0 | A | MUN | |
| 11003.0 | 1880-02-15 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 15716.0 | 1893-01-10 | 1882-04-11 | 0.0 | 0.0 | A | MUN | |
| 20622.0 | 1906-06-18 | 1922-04-22 | 105.0 | 0.0 | A | IRR | |
| 21392.0 | 1908-07-27 | 1922-04-22 | 0.0 | 0.0 | A | MUN | |
| 35050.08218 | 1872-07-01 | 1953-09-10 | 0.0 | 0.0 | C | MUN | |
| 35050.08492 | 1873-04-01 | 1953-09-10 | 0.0 | 0.0 | C | MUN | |
| 35050.10736 | 1879-05-24 | 1953-09-10 | 0.0 | 0.0 | C | MUN | |
| 35050.11003 | 1880-02-15 | 1953-09-10 | 0.0 | 0.0 | C | MUN | |
| 46751.20669 | 1906-08-04 | 1978-12-31 | 0.0 | 0.0 | A | MUN |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 46 AF. Its most recent year on record, 2010, came in at 133 AF — 289% of that, and 14th lowest of the 14 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| 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 | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 1987 | 32 | 6th lowest of 14 · 70% of median | 63 | 63 | 0.4 |
| 1988 | — | no recorded volume | 33 | 0 | — |
| 1998 | 48 | 8th lowest of 14 · 104% of median | — | 91 | 0.4 |
| 1999 | 5 | 2nd lowest of 14 · 11% of median | — | 37 | 0.1 |
| 2000 | 53 | 10th lowest of 14 · 115% of median | — | 317 | 0.2 |
| 2001 | 23 | 5th lowest of 14 · 50% of median | 69 | 152 | 0.4 |
| 2002 | 13 | 3rd lowest of 14 · 28% of median | 32 | 62 | 0.1 |
| 2003 | 76 | 11th lowest of 14 · 165% of median | 15 | 196 | 1.8 |
| 2004 | 13 | 3rd lowest of 14 · 28% of median | 221 | 91 | 0.4 |
| 2005 | 80 | 12th lowest of 14 · 174% of median | 9 | 214 | 0.4 |
| 2006 | 83 | 13th lowest of 14 · 180% of median | 28 | 215 | 0.3 |
| 2007 | 44 | 7th lowest of 14 · 96% of median | 4 | 235 | 0.2 |
| 2008 | 3 | 1st lowest of 14 · 6% of median | 77 | 95 | 0.7 |
| 2009 | 52 | 9th lowest of 14 · 113% of median | 51 | 196 | 0.2 |
| 2010 | 133 | 14th lowest of 14 · 289% of median | 134 | 193 | 1.9 |
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.