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LOWER P & B EMERSON LAKE
Structure dossier · WDID 0102018 · RA · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:48 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 1979-04-18 — 3749th most senior of the 7705 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: D ALESSANDRO NNT UDA WELL 106954 (1979-03-13). Immediately behind: MAGNUSON FLOOD DIVR A (1979-06-30).
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 |
|---|---|---|---|---|---|---|---|
| 47224.0 | 1979-04-18 | 1979-12-31 | 63.5 | 0.0 | A | AUGRCH |
Legal record & documents
No court-case numbers are attached to the cached rights.
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 201 AF. Its most recent year on record, 2024, came in at 94 AF — 47% of that, and 2nd 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) |
|---|---|---|---|---|
| 2010 | 337 | 14th lowest of 15 · 168% of median | 24 | 15.9 |
| 2011 | 248 | 11th lowest of 15 · 123% of median | 88 | 5.0 |
| 2012 | 139 | 6th lowest of 15 · 69% of median | 19 | 8.3 |
| 2013 | 117 | 3rd lowest of 15 · 58% of median | 26 | 7.5 |
| 2014 | 182 | 7th lowest of 15 · 90% of median | 35 | 6.4 |
| 2015 | 201 | 8th lowest of 15 · 100% of median | 22 | 13.8 |
| 2016 | 85 | 1st lowest of 15 · 42% of median | 19 | 3.9 |
| 2017 | 407 | 15th lowest of 15 · 202% of median | 59 | 20.6 |
| 2018 | 241 | 10th lowest of 15 · 120% of median | 48 | 4.9 |
| 2019 | 218 | 9th lowest of 15 · 108% of median | 47 | 4.4 |
| 2020 | 133 | 5th lowest of 15 · 66% of median | 27 | 4.4 |
| 2021 | 268 | 12th lowest of 15 · 133% of median | 75 | 6.3 |
| 2022 | 124 | 4th lowest of 15 · 62% of median | 30 | 4.5 |
| 2023 | 311 | 13th lowest of 15 · 155% of median | 16 | 18.6 |
| 2024 | 94 | 2nd lowest of 15 · 47% of median | 10 | 6.7 |
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 | 1 right(s), seniority decoded |
| diversion record | present | 876 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 10% of the irrigation seasons in 1982-2024 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.