Lee-Harborage East Lake
Lee-Harborage East Lake in Lee County, Florida has a water quality grade of B (Good). Water clarity: 5 ft visibility. Phosphorus: 9 µg/L.
- Clarity
- 5 ft
- Type
- Mesotrophic
- Trend
- ↑ Improving
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Lee-Harborage East Lake is a mesotrophic lake in Lee County, Florida. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. Compared to the 73 other monitored lakes in Lee County, Lee-Harborage East Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-03-14. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria advisory
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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Murky, only visible to about 5 ft. Phosphorus level: 9 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | Not graded |
| Phosphorus | 9 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lee-Harborage East Lake
Compare lakeside cabins, hotels, and vacation rentals near Lee-Harborage East Lake in Lee 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.
Top-rated places to stay near Lee-Harborage East Lake
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Fishing Lee-Harborage East Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.45 m/yr | 5 |
| Phosphorus | ↑ Improving | -0.25 µg/L/yr | 5 |
EPA Impairment Status
Lee-Harborage East 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 FL3258C4 · Official waterbody report · Matched by proximity (0.76 km)
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Lee-Harborage East Lake under Clean Water Act (NPDES) discharge permits, including 2 classified by the EPA as major dischargers.
- East Mulloch Drainage DistrictEstero · 1.6 mi away · NPDES FLS266906Major
- Miromar Lakes CddBonita Springs · 4 mi away · NPDES FLS743593Major
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.
County Ranking
Ranked #1 of 74 lakes in Lee County
Nearby Lakes in Lee County
Frequently asked questions about Lee-Harborage East Lake
Where is Lee-Harborage East Lake?
- Lee-Harborage East Lake is a lake in Lee County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lee-Harborage East Lake?
- Lee-Harborage East Lake in Lee County, Florida has a water quality grade of B (Good). Water clarity: 5 ft visibility. Phosphorus: 9 µg/L.
Is Lee-Harborage East Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Lee-Harborage East Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Lee-Harborage East Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
300 measurements from 3 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX300 samples · 2020–2025
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)