Lee-Harborage East Lake
Lee County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lee-Harborage East Lake. Here is what has been measured.
- Mesotrophic
Lee-Harborage East Lake in Lee County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5 ft visibility. Phosphorus: 9 µg/L.
Lee-Harborage East Lake is a mesotrophic lake in Lee County, Florida. 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. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lee-Harborage East Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lee-Harborage East Lake
These are the measurements Florida DEP publishes for Lee-Harborage East Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5 ft. Phosphorus 9 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 9µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Fishing Lee-Harborage East Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Improving5 years
Phosphorus
Improving-0.25 µg/L/yr5 years
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.
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. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Lee-Harborage East Lake?
- Lee-Harborage East Lake in Lee County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5 ft visibility. Phosphorus: 9 µg/L.
Is Lee-Harborage East Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lee-Harborage East Lake across LakeQuality
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Other 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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)