Florida lake · state assessment record
Marshall Lake
Assessment decisions reported by Florida to EPA under Clean Water Act sections 303(d) and 305(b), last assessed in the 2024 reporting cycle.
- 61
- Assessed acres
- Lake, Freshwater
- Water type
This waterbody in one line
Marshall Lake, a lake in Florida, is assessed as not supporting one or more designated uses, with 4 listed impairment causes in the state's most recent Integrated Report cycle (2024). By assessed acreage it sits above the national median by assessed acreage (38,628 lakes); its impairment list is among the longest nationally (4 listed causes vs 23,610 assessed lakes). Aquatic life is assessed as not supporting.
- Not Supporting
- overall status
- P59
- Assessed size nationally
- P3
- 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.
Marshall 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 cause-list length: 4 listed impairment causes, a longer list than 95% of assessed lake-type units (n=23,610). List length tracks how states sample and code, not a severity score.
No ruled-on use clears the bar
On the uses this filer ruled on, recreation, aquatic life, every determination is Not Supporting. That is a use-by-use reading of the filed record, not a single overall lake grade.
Marshall Lake: Category 5, TMDL still owed
Category 5 is the Integrated Report band where a TMDL (or equivalent) is still expected for Marshall Lake. Read the listed causes and any cleanup actions filed beside them before treating the overall status tile as a finished restoration story.
Overall status: not supporting
The filer's overall status for Marshall Lake is Not Supporting. That tile summarizes the assessment unit; the designated-use rows and cause list are the evidence behind it.
Mid-pack inside Florida
Size rank 591 of 973 inside Florida is mid-pack; the national percentile is the better scale comparison for this unit.
According to the U.S. Environmental Protection Agency's ATTAINS program, Florida carries 1,475 filed lake-type waterbodies in the August 2026 extract, and this page renders the assessment record EPA assigned to Marshall 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 |
|---|---|---|
| Fish and Wildlife Propagation - Freshwater | Aquatic-life or related | Not Supporting |
| Recreation | Recreation | Not Supporting |
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 |
|---|---|---|---|
| Benthic Macroinvertebrates Bioassessments | Fish and Wildlife Propagation - Freshwater | 2020 | TMDL priority: Medium |
| Chlorophyll-a | Fish and Wildlife Propagation - Freshwater; Recreation | 2020 | TMDL approved |
| Nitrogen, Total | Fish and Wildlife Propagation - Freshwater; Recreation | 2020 | TMDL approved |
| Phosphorus, Total | Fish and Wildlife Propagation - Freshwater; Recreation | 2020 | TMDL approved |
Reading the record
Where Marshall Lake sits among peers
30% of Florida's lakes assessed this deeply also had no use supported
Florida ruled definitively on 2 designated uses at Marshall Lake and found none of them supported. The dataset shows 691 Florida lakes judged to that same depth.
Florida's assessed lakes are most often judged on 2 uses, as this one was.
Computed share from EPA ATTAINS filed records, not an official EPA rating or safety grade.
| 1 | 2 | 3 | 4 | 5+ | |
|---|---|---|---|---|---|
| All supported | 30 | 325 | 12 | 0 | 0 |
| Mixed | Not possible | 156 | 140 | 17 | 0 |
| None supported | 68 | 210 (this record) | 45 | 0 | 0 |
Ringed cell: Marshall Lake. Source: EPA ATTAINS, Reporting cycles 1987–2026.
Scale and rank
Marshall Lake is one of 1,475 lake-type waterbodies reported to EPA from Florida, and one of 973 whose reported record carries enough populated assessment or gauge data for this site to list and index it. At 61 assessed acres it ranks 15,851st 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 15,850 lakes with a larger one.
Awaiting a filing
The state has not yet filed a definitive fish-consumption verdict for this record; that field populates when it reports it in a future Integrated Report cycle.
Why no water-level record
Marshall Lake has no daily USGS water-level or reservoir-storage series on this page because NWIS lists a lake monitoring site named for the waterbody, but the site is not active, and PlainLakes ingests only the active inventory, so there is no series to attach. How PlainLakes links gauges.
In context
Where Marshall 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
61 Top 41% larger than 59% 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
4 Longer than most more listed causes than 95% 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 Marshall Lake. Hover or tap any bar for its full count and share.
In context
Florida context
ATTAINS carries 1,475 lake-type waterbodies in Florida, 636 assessed as not supporting at least one use and 367 fully supporting. Among the 973 indexed units there, Marshall Lake ranks 81st by listed-cause count (4 listed causes) and 591st by assessed size among the 973 with an area filed; it sits in the not-supporting set (636 statewide) . Its listed causes include Benthic Macroinvertebrates Bioassessments; Chlorophyll-a; Nitrogen, Total; and Phosphorus, Total, which also appear among Florida's most-filed impairment causes (led by Phosphorus, Total).
| Other large assessed lakes in Florida | Assessed acres |
|---|---|
| Lake Okeechobee Not Supporting | 76,101 |
| Lake George Not Supporting | 43,576 |
| Lake Apopka Not Supporting | 30,909 |
| Lake Kissimmee Not Supporting | 30,671 |
| Lake Istokpoga Not Supporting | 26,673 |
| Lake Tohopekaliga Fully Supporting | 19,006 |
Peers near Marshall Lake's size or cause load
Similar assessed acres
Nearest filed extents (61 acres here).
- Range Line Lake · 61 acres · WI
- Newland Reservoir · 61 acres · CA
- Thirteen · 61 acres · MN
- Chicago Botanic Garden · 61 acres · IL
Similar cause load
Nearest listed-cause counts (4 here). Peers already in the acreage column are omitted.
- Agency Lake · 4 causes · OR
- Aldrich Pond · 4 causes · MA
- American Falls Reservoir (Snake River) · 4 causes · ID
- Anderson & Carlton · 4 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 FL2854A. 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.