Lake-Hiawatha
Lake County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lake-Hiawatha. Here is what has been measured.
- Eutrophic
Lake-Hiawatha in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.8 ft visibility. Phosphorus: 23 µg/L.
Lake-Hiawatha is a productive, nutrient-rich eutrophic lake in Lake County, Florida. Overall water quality is declining over recent sampling years. Compared to the 127 other monitored lakes in Lake County, Lake-Hiawatha ranks #29 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-03-22. 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 Lake-Hiawatha 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 Lake-Hiawatha
These are the measurements Florida DEP publishes for Lake-Hiawatha, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.8 ft of visibility. Phosphorus 23 µg/L. TSI 56.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 23µg/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. | 56 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake-Hiawatha
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake-Hiawatha typically sits around 85°F at the surface in September. Summer average is about 87°F. Usually warmest in Jul (about 89°F) and coldest in Dec (about 55°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (55°F) to its warmest (89°F).
Typical surface water temperature by month, from 33 field readings (2010–2015) via the EPA Water Quality Portal. See the full Lake-Hiawatha water temperature breakdown →
Stays via Stay22
Stays near Lake-Hiawatha
Compare lakeside cabins, hotels, and vacation rentals near Lake-Hiawatha in Lake 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 Lake-Hiawatha
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Follow Lake-Hiawatha’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lake-Hiawatha
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+6.69 µg/L/yr6 years
Nearby Lakes in Lake County
Frequently asked questions about Lake-Hiawatha
Where is Lake-Hiawatha?
- Lake-Hiawatha is a lake in Lake County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Lake-Hiawatha?
- Lake-Hiawatha in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.8 ft visibility. Phosphorus: 23 µg/L.
Is Lake-Hiawatha safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Lake-Hiawatha?
- Lake-Hiawatha typically sits around 85°F at the surface in September, from 33 EPA Water Quality Portal field readings (2010–2015). That is a typical value for the month, not a live reading.
Explore Lake-Hiawatha across LakeQuality
More lakes in Florida
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
299 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_WQX299 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.