Kentucky reservoir · state assessment record
Green River Lake
Assessment decisions reported by Kentucky to EPA under Clean Water Act sections 303(d) and 305(b), last assessed in the 2024 reporting cycle.
- 8,438
- Assessed acres
- Lake / Reservoir / Pond
- Water type
- Eutrophic
- Reported trophic class
- 75.9 ft
- Gage Height (provisional)
This waterbody in one line
Green River Lake, a reservoir in Kentucky, is assessed as fully supporting its designated uses, with no impairment causes listed in the state's most recent Integrated Report cycle (2024). By assessed acreage it sits among the largest 1% of assessed lakes nationally (38,628 lakes with a filed area); its impairment list is shorter than on half of assessed lakes (0 listed causes). Aquatic life is assessed as fully supporting. Fish consumption is assessed as fully supporting. A USGS gauge tracks its gage height daily.
- Fully Supporting
- overall status
- P99
- Assessed size nationally
- P51
- Shorter cause list
- Fully Supporting
- aquatic life
Assessment verdicts are the state agency's decisions as reported to EPA ATTAINS; PlainLakes renders them without modification.
A composite of this record's EPA ATTAINS designated-use verdicts, filed impairment count, and assessment currency, weighted and benchmarked against the national corpus of assessed active waterbodies. This is a water-quality standing, not a human-recreation or property-value judgment, and dimensions with no filed verdict drop out rather than count against the score.
Green River Lake against the ATTAINS register
Paragraphs are selected by this unit's percentiles and use matrix: different lakes lead with different dimensions. Figures are ATTAINS / portal register arithmetic, not advice.
The signature stat: cause-list length
The standout filed fact is a short cause list: 0 causes, shorter than 51% of assessed lake-type units. A short list can mean a focused impairment, or a shallow assessment.
Large assessed unit
At 8,438 acres, Green River Lake clears the upper tercile of assessed lake-type units with an area on file (382 still larger). Size comparisons use the portal's deduplicated lake ranking population, not raw ATTAINS row counts.
Every ruled-on use is fully supporting
The filed use determinations for fish consumption, recreation, aquatic life are all Fully Supporting. Where an overall IR category still flags the unit, look at the cause list and report standing rather than treating the use row as empty.
Large within Kentucky
Among Kentucky's 108 indexed units with an area, Green River Lake ranks 5 by assessed size, toward the large end of that state file.
IR category in the supporting band
EPA's Integrated Report category for Green River Lake is 1. In ATTAINS that band means the assessed uses are supporting (or supporting with other waters in the unit), so the narrative weight shifts to how deep the assessment went and whether monitoring is current, not to a restoration plan.
According to the U.S. Environmental Protection Agency's ATTAINS program, Kentucky carries 141 filed lake-type waterbodies in the August 2026 extract, and this page renders the assessment record EPA assigned to Green River Lake without modification. See our methodology for reporting-unit limits and gauge linking rules.
The record
Designated-use assessments
Fully Supporting and Not Supporting are the state's definitive verdicts; other entries mean the use was not conclusively assessed in this cycle.
| Designated use | Group | Verdict |
|---|---|---|
| Domestic Water Supply | Drinking-water supply designation | Fully Supporting |
| Fish Consumption | Fish-consumption or fishery | Fully Supporting |
| Primary Contact Recreation Water | Recreation | Fully Supporting |
| Secondary Contact Recreation Water | Recreation | Fully Supporting |
| Warm Water Aquatic Habitat | Aquatic-life or related | Fully Supporting |
The record
Listed impairment causes
The state's reported assessment lists no impairment causes for this reservoir.
Reading the record
Green River Lake: Category 1 reading
1 Category 1: all designated uses supported
Kentucky filed this assessment unit as Category 1: every designated use assessed here was reported as supported. That is the filer's Integrated Report classification, not a PlainLakes score.
Scale and rank
Green River Lake is one of 141 lake-type waterbodies reported to EPA from Kentucky, and one of 108 whose reported record carries enough populated assessment or gauge data for this site to list and index it. At 8,438 assessed acres it ranks 383rd by assessed size among the 38,628 lakes the dataset carries an area for, counting a state’s repeated filings of one water once, behind 382 lakes with a larger one.
Water level
A USGS gauge tracks this reservoir's gage height daily, and the latest reading is 0.09 ft below the reading 32 days earlier, against a 365-day observed range of 8.1 ft.
Reported trophic class
Eutrophic is the trophic class the filing agency reported to EPA ATTAINS for this assessment unit. It describes nutrient enrichment, not whether the water is safe, and it is not a PlainLakes inference. What the trophic scale measures.
Water level: 365-day record
Daily gage height values, feet above this gauge’s own local zero, not above sea level, from USGS gauge 03305990 (Green River Lake Near Campbellsville, Ky), shown weekly. Readings are daily-batch snapshots, not real-time conditions.
- Latest reading
- 75.9 ft 0.09000000000000341ft vs 32 days earlier
- 2026-08-15 · Provisional, subject to USGS revision
Water level: 365-day record
Subscribe to water level updates for Green River Lake (RSS)
Every daily value in this window is provisional and subject to USGS revision: USGS has not yet approved any value in the trailing 365 days of this record.
Full gauge record: USGS monitoring location 03305990
In context
Where Green River Lake sits nationally
Assessed size among U.S. lakes
Distribution of assessed acreage across ATTAINS lakes filed with an area, counting a state’s repeated filings of one water once
8,438 Top 1% larger than 99% of 38,628 lakes
lakes the dataset carries an area for, counting a state’s repeated filings of one water once, bucketed by value
Source EPA ATTAINS · Reporting cycles 1987–2026
Listed causes vs waterbodies carrying a verdict
How many impairment causes U.S. waterbodies with a reported verdict carry
0 Among the shortest cause lists fewer listed causes than 51% of 23,610 waterbodies carrying a verdict
named waterbodies carrying a verdict, bucketed by value
Source EPA ATTAINS · Reporting cycles 1987–2026
In both charts each bar is a band and taller bars hold more waterbodies; the dashed line and filled bar mark Green River Lake. Hover or tap any bar for its full count and share.
In context
Kentucky context
ATTAINS carries 141 lake-type waterbodies in Kentucky, 72 assessed as not supporting at least one use and 57 fully supporting. Among the 108 indexed units there, Green River Lake ranks 73rd by listed-cause count (no listed causes) and 5th by assessed size among the 108 with an area filed; it is one of the 57 fully-supporting indexed records in the state .
| Other large assessed lakes in Kentucky | Assessed acres |
|---|---|
| Lake Cumberland Not Supporting | 50,611 |
| Kentucky Lake Not Supporting | 48,725 |
| Lake Barkley Not Supporting | 39,298 |
| Barren River Lake Not Supporting | 9,461 |
| Cave Run Lake Not Supporting | 8,097 |
| Nolin Lake Fully Supporting | 6,024 |
Peers near Green River Lake's size or cause load
Similar assessed acres
Nearest filed extents (8,438 acres here).
- Tenkiller Ferry Lake · 8,442 acres · OK
- Lake Livingston · 8,415 acres · TX
- Portage Lake · 8,464 acres · MI
- Oroville, Lake · 8,468 acres · CA
Similar cause load
Nearest listed-cause counts (0 here). Peers already in the acreage column are omitted.
- 31st Street Harbor · 0 causes · IL
- 42nd Avenue East Beach · 0 causes · MN
- 59th Street Harbor · 0 causes · IL
- 657 Dunleavy (Beach) · 0 causes · MI
What to do with this record
- Assessment verdicts are cycle-based, not real-time. For fish-consumption decisions, your state advisory program is the binding source. Consumption status guide
- Water levels shown are daily snapshots. Seasonal drawdown and datum conventions matter when comparing levels. How to read level data
- Impairment listings follow the Clean Water Act 303(d) process; a listing is a regulatory finding, not a closure notice. 303(d) explained
PlainLakes renders state assessment decisions and federal gauge observations without modification. It does not issue advisories.
Assessment decisions on this page are rendered directly from state Integrated Report records in EPA's ATTAINS system; gauge figures are daily-value observations from the USGS National Water Information System, no number is typed in by an editor. Overall status, use verdicts, and causes are the state's reported decisions for assessment unit KY-855. Counts and percentiles are computed across all lake-type records PlainLakes ingests from ATTAINS. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-08-17. Primary sources: EPA ATTAINS and USGS National Water Information System.