Highlands-Redwater Lake
Highlands County, FloridaView mapDirections
No nutrient or algae sampling on record from Florida DEP for this lake.
- Impaired · Algal growth
- Limited data
Highlands-Redwater Lake in Highlands County, Florida has water-quality measurements published by Florida DEP, shown here as reported.
Highlands-Redwater Lake is a lake in Highlands County, Florida. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2021-04-26. Methodology: how these readings are compared.
If you are planning to stay, you can search lake houses and cabins around Highlands-Redwater Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Highlands-Redwater Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, nutrients (phosphorus, nitrogen), pH / acidity. Check local advisories before you swim.
Whether Highlands-Redwater 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 Highlands-Redwater Lake
These are the measurements Florida DEP publishes for Highlands-Redwater 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.
Ask about Highlands-Redwater Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Highlands-Redwater Lake typically sits around 87°F at the surface in September. Summer average is about 86°F. Usually warmest in Aug (about 88°F) and coldest in Feb (about 67°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (67°F) to its warmest (88°F).
Typical surface water temperature by month, from 28 field readings (2010–2015) via the EPA Water Quality Portal. See the full Highlands-Redwater Lake water temperature breakdown →
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Stays near Highlands-Redwater Lake
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Fishing Highlands-Redwater Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Improving5 years
Phosphorus
Improving-1.5 µg/L/yr5 years
EPA Impairment Status
Highlands-Redwater 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.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL1938F · Official waterbody report
Nearby Lakes in Highlands County
Frequently asked questions about Highlands-Redwater Lake
Where is Highlands-Redwater Lake?
- Highlands-Redwater Lake is a lake in Highlands County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Highlands-Redwater Lake?
- Highlands-Redwater Lake in Highlands County, Florida has water-quality measurements published by Florida DEP, shown here as reported.
Is Highlands-Redwater Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Highlands-Redwater Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, nutrients (phosphorus, nitrogen), pH / acidity. Check local advisories before you swim.
What is the water temperature of Highlands-Redwater Lake?
- Highlands-Redwater Lake typically sits around 87°F at the surface in September, from 28 EPA Water Quality Portal field readings (2010–2015). That is a typical value for the month, not a live reading.
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Where this data comes from
18 measurements from 3 monitoring stations, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX18 samples · 2020–2021
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
Impairment status from EPA ATTAINS 303(d) database