Mary Jane Lake
Orange County, FloridaEutrophic
Mary Jane Lake is a productive, nutrient-rich eutrophic lake in Orange County, Florida. Water quality is graded D based on 2 sampling years through 2024. Compared to the 531 other monitored lakes in Orange County, Mary Jane Lake ranks #424 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2024-12-02. Grade methodology: LakeGrade methodology.
Watch Mary Jane Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 1.6 ft of visibility. Phosphorus level: 28.5 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 ft | F |
| Phosphorus | 28.5 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #424 of 532 lakes in Orange County
Cleaner Lakes Within 30 Miles
Mary Jane Lake holds Grade D. 4 nearby lakes hold higher grades.
- COrange-Whippoorwill LakeOrange County · 3.6 mi · Higher grade (D → C)
- CLake Mary Jane †Southeast EndOrange County · 1.4 mi · Higher grade (D → C)
- COrange-Hart LakeOrange County · 2.1 mi · Higher grade (D → C)
- CHart LakeOrange County · 2.3 mi · Higher grade (D → C)
Nearby Lakes in Orange County
More Florida Lake Rankings
Other Grade D Lakes in Florida
Flagler County · Clarity: 1.8 ft
Indian River County · Clarity: 2.3 ft
Putnam County · Clarity: 2 ft
Alachua County · Clarity: 3.3 ft
Sarasota County · Clarity: 3.8 ft
Leon County · Clarity: 1 ft
Eutrophic Lakes in Florida
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Mary Jane Lake under Clean Water Act (NPDES) discharge permits.
- Orlando AirportOrlando · 2.2 mi away · NPDES FLG110905
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-12-02
Monitoring stations: 1
Where to stay near Mary Jane Lake
Compare lakeside cabins, hotels, and vacation rentals near Mary Jane Lake in Orange County, Florida — live availability and prices for your trip.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.