City Hall Lake
Lee County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for City Hall Lake. Here is what has been measured.
- Hypereutrophic
- Impaired · Algal growth
- Limited data
City Hall Lake in Lee County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 104.5 µg/L.
City Hall Lake is a highly nutrient-loaded hypereutrophic lake in Lee County, Florida. Overall water quality is improving over recent sampling years. Compared to the 73 other monitored lakes in Lee County, City Hall Lake ranks #73 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-07-14. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
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. City Hall Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, nutrients (phosphorus, nitrogen), oxygen depletion (low DO). Check local advisories before you swim.
Whether City Hall 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 City Hall Lake
These are the measurements Florida DEP publishes for City Hall Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 104.5 µg/L. TSI 71.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 105µg/L | Poor 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. | 71 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
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Stays via Stay22
Stays near City Hall Lake
Compare lakeside cabins, hotels, and vacation rentals near City Hall 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around City Hall Lake are listed below.
Top-rated places to stay near City Hall Lake
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Fishing City Hall Lake
Water quality readings over time
2 seasons of samples on record (2020–2022). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-51 µg/L/yr2 years
EPA Impairment Status
City Hall Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
Source: EPA ATTAINS assessment unit FL2092H · Official waterbody report
Nearby Lakes in Lee County
Frequently asked questions about City Hall Lake
Where is City Hall Lake?
- City Hall 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 City Hall Lake?
- City Hall Lake in Lee County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 104.5 µg/L.
Is City Hall Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. City Hall Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, nutrients (phosphorus, nitrogen), oxygen depletion (low DO). Check local advisories before you swim.
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Where this data comes from
4 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples4 samples · 2020–2022
Monitoring station identifiers (1)
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
Impairment status from EPA ATTAINS 303(d) database