Marion-Eaton Lake
Marion-Eaton Lake in Marion County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 0.8 ft visibility. Phosphorus: 81 µg/L.
- Clarity
- 0.8 ft
- Type
- Hypereutrophic
- Trend
- ↑ Improving
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Marion-Eaton Lake →
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Marion-Eaton Lake is a highly nutrient-loaded hypereutrophic lake in Marion County, Florida. Water quality is graded D based on 1 sampling years through 2021. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 17 other monitored lakes in Marion County, Marion-Eaton Lake ranks #17 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2021-10-19. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 0.8 ft of visibility. Phosphorus level: 81 µg/L. Trophic State Index: 74.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.8 ft | Not graded |
| Phosphorus | 81 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 74 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Marion-Eaton Lake
Compare lakeside cabins, hotels, and vacation rentals near Marion-Eaton Lake in Marion County, Florida — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Marion-Eaton Lake are listed below.
Top-rated places to stay near Marion-Eaton Lake
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Planning a trip? Cabins and lodging at Marion-Eaton Lake → · more Florida lake trips
Recreation & Access
- Ocala National Forest Campround Ramp and PierPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Marion-Eaton Lake
- Lake Eaton0.6 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Fishing Marion-Eaton Lake
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.039 m/yr | 3 |
| Phosphorus | ↑ Improving | -16.18 µg/L/yr | 3 |
EPA Impairment Status
Marion-Eaton Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2771A · Official waterbody report · Matched by proximity (0.41 km)
County Ranking
Ranked #17 of 18 lakes in Marion County
Nearby Lakes With Higher Grades
Marion-Eaton Lake holds Grade D. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Marion County
Frequently asked questions about Marion-Eaton Lake
Where is Marion-Eaton Lake?
- Marion-Eaton Lake is a lake in Marion County, Florida. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Marion-Eaton Lake?
- Marion-Eaton Lake in Marion County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 0.8 ft visibility. Phosphorus: 81 µg/L.
Is Marion-Eaton Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Marion-Eaton Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Are there boat ramps on Marion-Eaton Lake?
- Marion-Eaton Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Ocala National Forest Campround Ramp and Pier. Public access is listed as yes.
Are there campgrounds on Marion-Eaton Lake?
- Marion-Eaton Lake has 1 public campground from USGS The National Map within 5 km, including Lake Eaton. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Marion-Eaton Lake across LakeQuality
More Florida Lake Rankings
Other Grade D Lakes in Florida
Hypereutrophic Lakes in Florida
Where this data comes from
36 measurements from 3 monitoring stations, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX36 samples · 2020–2021
Monitoring station identifiers (3)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles