Wyoming lake · state assessment record
Gillette Fishing Lake
Assessment decisions reported by Wyoming to EPA under Clean Water Act sections 303(d) and 305(b), last assessed in the 1998 reporting cycle.
- 15
- Assessed acres
- Lake, Freshwater
- Water type
- Eutrophic
- Reported trophic class
This waterbody in one line
Gillette Fishing Lake, a lake in Wyoming, is assessed as not supporting one or more designated uses, with 2 listed impairment causes in the state's most recent Integrated Report cycle (1998). By assessed acreage it sits below the national median by assessed acreage (38,628 lakes); its impairment list is among the longest nationally (2 listed causes vs 23,610 assessed lakes). Aquatic life is assessed as not supporting.
- Not Supporting
- overall status
- P27
- Assessed size nationally
- P10
- Shorter cause list
- Not 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.
Reading Gillette Fishing Lake's filed record
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: in-state cause rank
Inside Wyoming, cause-list rank is the local separator: Gillette Fishing Lake is 2 of 8 indexed units by listed-cause count, toward the top of that state's filed lists.
Every ruled-on use is not supporting
On the uses this filer ruled on, aquatic life, every determination is Not Supporting. That is a use-by-use reading of the filed record, not a single overall lake grade.
Gillette Fishing Lake: Category 4A reading
Category 4A means a TMDL (or equivalent) is already approved for the impairment on Gillette Fishing Lake. The remaining work is implementation and tracking, read the cleanup-standing and cause rows for what the state already committed to address.
Longer than most cause lists
2 listed causes puts this unit above 80% of assessed lake-type records by list length. Treat that as a coding-and-sampling signal: states that split pollutants finely mint longer lists without proving worse water.
Overall status: not supporting
The filer's overall status for Gillette Fishing Lake is Not Supporting. That tile summarizes the assessment unit; the designated-use rows and cause list are the evidence behind it.
According to the U.S. Environmental Protection Agency's ATTAINS program, Wyoming carries 14 filed lake-type waterbodies in the August 2026 extract, and this page renders the assessment record EPA assigned to Gillette Fishing 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. Wyoming filed its own confidence on the 2 definitive verdicts it rated: Fair and Good. That rating is the filer's, in EPA's own field, and EPA publishes no definition of the four words it offers.
| Designated use | Group | Verdict |
|---|---|---|
| Aquatic Life Other Than Fish | Aquatic-life or related | Not Supporting Filer confidence: Good |
| Cold Water Fishery | Aquatic-life or related | Not Supporting Filer confidence: Fair |
| Agriculture | Other | Not Assessed |
| Drinking Water | Drinking-water supply designation | Not Assessed |
| Fish Consumption | Fish-consumption or fishery | Not Assessed |
| Industry | Other | Not Assessed |
| Non-Game Fish | Aquatic-life or related | Not Assessed |
| Recreation | Recreation | Not Assessed |
| Scenic Value | Other | Not Assessed |
| Wildlife | Other | Not Assessed |
The record
Listed impairment causes
Causes the state listed as impairing designated uses of this lake, with the cycle each was first listed and the Clean Water Act action recorded against it.
| Cause | Affected uses | First listed | Cleanup standing |
|---|---|---|---|
| Sedimentation/Siltation | Aquatic Life Other Than Fish, Cold Water Fishery | 1996 | TMDL approved |
| Phosphate | Aquatic Life Other Than Fish, Cold Water Fishery | 2006 | TMDL approved |
Probable sources
Wyoming listed the source of the impairment as unknown. That is the state's own filed value, not a gap in this record: the cause has been identified, the origin has not.
Reading the record
Gillette Fishing Lake: Category 4A reading
4A Category 4A: impaired, TMDL completed
Wyoming filed this assessment unit as Category 4A: impaired, with a pollutant-budget TMDL already completed under 303(d). The listing remains an impairment finding; the plan is on file rather than still awaiting write-up.
Scale and rank
Gillette Fishing Lake is one of 14 lake-type waterbodies reported to EPA from Wyoming, and one of 8 whose reported record carries enough populated assessment or gauge data for this site to list and index it. At 15 assessed acres it ranks 28,194th 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 28,193 lakes with a larger one.
Still unfiled
The state has not yet filed a definitive fish-consumption verdict and a definitive recreation verdict for this record; those fields populate when it reports them in a future Integrated Report cycle.
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.
In context
Where Gillette Fishing 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
15 Top 73% larger than 27% 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
2 Longer than most more listed causes than 80% 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 Gillette Fishing Lake. Hover or tap any bar for its full count and share.
In context
Wyoming context
ATTAINS carries 14 lake-type waterbodies in Wyoming, 7 assessed as not supporting at least one use and 6 fully supporting. Among the 8 indexed units there, Gillette Fishing Lake ranks 2nd by listed-cause count (2 listed causes) and 7th by assessed size among the 8 with an area filed; it sits in the not-supporting set (7 statewide) . Its listed causes include Sedimentation/Siltation; and Phosphate, which also appear among Wyoming's most-filed impairment causes (led by Selenium).
| Other large assessed lakes in Wyoming | Assessed acres |
|---|---|
| Boysen Reservoir Not Assessed | 19,387 |
| Glendo Reservoir Fully Supporting | 12,050 |
| Ocean Lake Not Supporting | 6,076 |
| Brooks Lake Not Supporting | 209 |
| Meeboer Lake Fully Supporting | 116 |
| Rasmus Lee Lake Not Supporting | 85 |
Peers near Gillette Fishing Lake's size or cause load
Similar assessed acres
Nearest filed extents (15 acres here).
- Arbutus Lake, Wolfes Pond · 15 acres · NY
- Balsam Lake · 15 acres · NY
- Berry Lake · 15 acres · WI
- Chamberlin Mills Pond · 15 acres · NY
Similar cause load
Nearest listed-cause counts (2 here). Peers already in the acreage column are omitted.
- 12th St. Beach · 2 causes · IL
- 31st St. Beach · 2 causes · IL
- 49th St. Beach · 2 causes · IL
- 57th St. Beach · 2 causes · IL
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
- 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 WYBF101202010601_01. 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.