Wisconsin lake · state assessment record
East Bay Lake
In Vilas County. The assessment record reported by Wisconsin to EPA under Clean Water Act sections 303(d) and 305(b), filed in the 2022 reporting cycle.
- 213
- Assessed acres
- Lake, Freshwater
- Water type
- Eutrophic
- Reported trophic class
This waterbody in one line
East Bay Lake, a lake in Wisconsin, was reported but not assessed in the state's most recent Integrated Report cycle (2022). By assessed acreage it sits in the upper quartile by assessed acreage nationally (38,628 lakes).
- Not Assessed
- overall status
- P82
- Assessed size nationally
Assessment verdicts are the state agency's decisions as reported to EPA ATTAINS; PlainLakes renders them without modification.
East Bay 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: monitoring lag
The signature tension is currency: the reporting cycle is 2022 while monitoring evidence runs through 2017, a 5-year gap. Cycle year and last-monitored year move independently in ATTAINS; this page shows both.
Large assessed unit
At 212.9 acres, East Bay Lake clears the upper tercile of assessed lake-type units with an area on file (6,848 still larger). Size comparisons use the portal's deduplicated lake ranking population, not raw ATTAINS row counts.
IR category 3 on East Bay Lake
The Integrated Report category filed for East Bay Lake is 3. PlainLakes renders EPA's code without remapping it into a consumer grade.
Overall status: Not Assessed
ATTAINS overall status on this unit is “Not Assessed”. PlainLakes does not rewrite that vocabulary into a consumer score.
According to the U.S. Environmental Protection Agency's ATTAINS program, Wisconsin carries 19,871 filed lake-type waterbodies in the August 2026 extract, and this page renders the assessment record EPA assigned to East Bay 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. Wisconsin filed 2017 as the year this waterbody was last monitored.
| Designated use | Group | Verdict |
|---|---|---|
| Fish Consumption | Fish-consumption or fishery | Not Assessed |
| Fish and Aquatic Life | Aquatic-life or related | Not Assessed |
| Public Health and Welfare | Recreation | Not Assessed |
| Recreation | Recreation | Not Assessed |
| Wildlife | Aquatic-life or related | Not Assessed |
The record
Listed impairment causes
The state reported this lake in its 2022 Integrated Report cycle but reached no assessment determination, so no causes are listed. The unit is recorded under EPA integrated-reporting Category 3: reviewed, with insufficient information to determine whether it meets water-quality standards. An undetermined waterbody is neither confirmed clean nor confirmed impaired.
Reading the record
How current is East Bay Lake's evidence?
5 years between the 2022 reporting cycle and monitoring through 2017
Wisconsin filed 2017 as the year this waterbody was last monitored.
The cycle is when the state reported; the monitoring year, where filed, is when it measured. How to read assessment currency.
Scale and rank
East Bay Lake is one of 19,871 lake-type waterbodies reported to EPA from Wisconsin. It is not among the 1,219 whose reported record carries enough populated assessment or gauge data for this site to list and index it. At 213 assessed acres it ranks 6,849th 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 6,848 lakes with a larger one.
What this record holds
Wisconsin filed this lake in its 2022 Integrated Report cycle but reached no determination, so the record holds that filing and its use rows, but no verdict, and with nothing judged, no impairment cause to track over time. The state has not yet filed a definitive fish-consumption verdict, a definitive recreation verdict, a definitive aquatic-life verdict, and 1 other 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 East Bay 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
213 Top 18% larger than 82% 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
In both charts each bar is a band and taller bars hold more waterbodies; the dashed line and filled bar mark East Bay Lake. Hover or tap any bar for its full count and share.
In context
Wisconsin context
ATTAINS carries 19,871 lake-type waterbodies in Wisconsin, 493 assessed as not supporting at least one use and 4,225 fully supporting.
| Other large assessed lakes in Wisconsin | Assessed acres |
|---|---|
| Lake Winnebago Not Supporting | 131,942 |
| Lake Pepin Not Supporting | 25,503 |
| Petenwell Lake Not Supporting | 23,001 |
| Lake Poygan Not Supporting | 14,024 |
| Lake Chippewa Fully Supporting | 13,616 |
| Turtle Flambeau Flowage Not Supporting | 12,943 |
Lakes near East Bay Lake's assessed acres
Similar assessed acres
Nearest filed extents (213 acres here).
- Caraway Lake · 213 acres · FL
- Long Lake · 213 acres · MI
- Bass · 213 acres · MN
- Spencer Lake · 213 acres · WA
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 WI10030484. 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.