Alabama reservoir · state assessment record
Eightmile Creek (Lake Catoma)
Assessment decisions reported by Alabama Department of Environmental Management to EPA under Clean Water Act sections 303(d) and 305(b), last assessed in the 2022 reporting cycle.
- 527
- Assessed acres
- Reservoir
- Water type
This waterbody in one line
Eightmile Creek (Lake Catoma), a reservoir in Alabama, is assessed as not supporting one or more designated uses, with 3 listed impairment causes in the state's most recent Integrated Report cycle (2022). By assessed acreage it sits among the largest 10% by assessed acreage nationally (38,628 lakes); its impairment list is among the longest nationally (3 listed causes vs 23,610 assessed lakes). Aquatic life is assessed as not supporting. Alabama assesses fishing as not supported; it reported no verdict on fish consumption itself.
- Not Supporting
- overall status
- P91
- Assessed size nationally
- P5
- 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.
Where Eightmile Creek (Lake Catoma) stands in the filed 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: in-state cause rank
Inside Alabama, cause-list rank is the local separator: Eightmile Creek (Lake Catoma) is 24 of 263 indexed units by listed-cause count, toward the top of that state's filed lists.
No ruled-on use clears the bar
On the uses this filer ruled on, fish consumption, 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.
Large assessed unit
At 527.3 acres, Eightmile Creek (Lake Catoma) clears the upper tercile of assessed lake-type units with an area on file (3,599 still larger). Size comparisons use the portal's deduplicated lake ranking population, not raw ATTAINS row counts.
Longer than most cause lists
3 listed causes puts this unit above 90% 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.
Eightmile Creek (Lake Catoma): Category 5, TMDL still owed
Category 5 is the Integrated Report band where a TMDL (or equivalent) is still expected for Eightmile Creek (Lake Catoma). Read the listed causes and any cleanup actions filed beside them before treating the overall status tile as a finished restoration story.
According to the U.S. Environmental Protection Agency's ATTAINS program, Alabama carries 304 filed lake-type waterbodies in the August 2026 extract, and this page renders the assessment record EPA assigned to Eightmile Creek (Lake Catoma) 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 |
|---|---|---|
| Contact Recreation | Recreation | Not Supporting |
| Drinking and Food Processing | Drinking-water supply designation | Fully Supporting |
| Fishing | Fish-consumption or fishery | Not Supporting |
| Industrial and Agriculture Uses | Other | Not Supporting |
| Propagation of Fish and Wildlife | Aquatic-life or related | Not Supporting |
The record
Listed impairment causes
Causes the state listed as impairing designated uses of this reservoir, with the cycle each was first listed and the Clean Water Act action recorded against it.
| Cause | Affected uses | First listed | Cleanup standing |
|---|---|---|---|
| Ammonia, Total | Propagation of Fish and Wildlife; Fishing; Contact Recreation; Industrial and Agriculture Uses | 1996 | TMDL approved |
| Biochemical Oxygen Demand (BOD) | Propagation of Fish and Wildlife; Fishing | 1996 | TMDL approved |
| Mercury | Fishing | 2022 | TMDL priority: Low |
Probable sources named by the state
Each source below is listed under the cause the state filed it against, and carries the word the state filed with it — confirmed, or suspected.
- Ammonia, Total
- Industrial Point Source Discharge (suspected) Sanitary Sewer Overflows (Collection System Failures) (suspected) Animal Feeding Operations (NPS) (suspected)
- Biochemical Oxygen Demand (BOD)
- Animal Holding/Management Areas (suspected)
- Mercury
- Atmospheric Deposition (suspected)
Reading the record
Where Eightmile Creek (Lake Catoma) sits among peers
38% of Alabama's lakes assessed this deeply also came out mixed
Alabama ruled definitively on 5 designated uses at Eightmile Creek (Lake Catoma) and found 4 of 5 not supported. The dataset shows 94 Alabama lakes judged to that same depth.
Alabama's assessed lakes are most often judged on 4 uses; this one was judged on 5.
Computed share from EPA ATTAINS filed records, not an official EPA rating or safety grade.
| 1 | 2 | 3 | 4 | 5+ | |
|---|---|---|---|---|---|
| All supported | 0 | 5 | 8 | 70 | 47 |
| Mixed | Not possible | 0 | 4 | 71 | 36 (this record) |
| None supported | 8 | 1 | 1 | 11 | 11 |
Ringed cell: Eightmile Creek (Lake Catoma). Source: EPA ATTAINS, Reporting cycles 1987–2026.
Scale and rank
Eightmile Creek (Lake Catoma) is one of 304 lake-type waterbodies reported to EPA from Alabama, and one of 263 whose reported record carries enough populated assessment or gauge data for this site to list and index it. At 527 assessed acres it ranks 3,600th 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 3,599 lakes with a larger one.
In context
Where Eightmile Creek (Lake Catoma) 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
527 Top 9% larger than 91% 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
3 Longer than most more listed causes than 90% 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 Eightmile Creek (Lake Catoma). Hover or tap any bar for its full count and share.
In context
Alabama context
ATTAINS carries 304 lake-type waterbodies in Alabama, 143 assessed as not supporting at least one use and 130 fully supporting. Among the 263 indexed units there, Eightmile Creek (Lake Catoma) ranks 24th by listed-cause count (3 listed causes) and 133rd by assessed size among the 263 with an area filed; it sits in the not-supporting set (143 statewide) . Its listed causes include Biochemical Oxygen Demand (BOD) and Mercury, which also appear among Alabama's most-filed impairment causes (led by Mercury). It also lists Ammonia, Total, outside that top-five list.
| Other large assessed lakes in Alabama | Assessed acres |
|---|---|
| Tennessee River (Lake Guntersville) Fully Supporting | 20,440 |
| Wheeler Lake Not Supporting | 18,705 |
| Tallapoosa River (Lake Martin) Fully Supporting | 15,867 |
| Coosa River (Weiss Lake) Not Supporting | 15,066 |
| Tennessee River (Wheeler Lake) Not Supporting | 13,441 |
| Tennessee River (Wilson Lake) Not Supporting | 13,363 |
Peers near Eightmile Creek (Lake Catoma)'s size or cause load
Similar assessed acres
Nearest filed extents (527 acres here).
- Smith Mtn. Lake (Gills Creek) · 527 acres · VA
- Gardner Lake (Salem/Montville/Bozrah) · 527 acres · CT
- Middle McKenzie Lake · 527 acres · WI
- Clear Lake · 528 acres · SD
Similar cause load
Nearest listed-cause counts (3 here). Peers already in the acreage column are omitted.
- 67th St. Beach · 3 causes · IL
- Abiquiu Reservoir · 3 causes · NM
- Absecon Creek (AC Reserviors) (gage to SB) · 3 causes · NJ
- Absecon Creek (below gage) · 3 causes · NJ
What to do with this record
- The listing here is on a fishery use, not on fish consumption, and this state reported no consumption verdict for this reservoir. Your state fish-advisory program is the source for whether the catch is safe to eat. 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 AL03160109-0104-102. 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.