Highlands-Redwater Lake
Highlands-Redwater Lake in Highlands County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
- Typical in August
- 88°F
- Trend
- ↑ Improving
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Why Highlands-Redwater Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Highlands-Redwater Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
Watch Highlands-Redwater Lake water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Highlands-Redwater Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Highlands-Redwater Lake
Compare lakeside cabins, hotels, and vacation rentals near Highlands-Redwater Lake in Highlands 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 Highlands-Redwater Lake
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Highlands-Redwater Lake typically sits around 88°F at the surface in August. 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.
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 →
Fishing Highlands-Redwater Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.08 m/yr | 5 |
| Phosphorus | ↑ Improving | -1.5 µg/L/yr | 5 |
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
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL1938F · Official waterbody report · Matched by proximity (0.05 km)
Graded lakes near Highlands-Redwater Lake
Highlands-Redwater Lake has no grade, but these lakes within a short drive do.
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. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Highlands-Redwater Lake?
- Highlands-Redwater Lake in Highlands County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Highlands-Redwater Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Highlands-Redwater Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Highlands-Redwater Lake?
- Highlands-Redwater Lake typically sits around 88°F at the surface in August, from 28 EPA Water Quality Portal field readings (2010–2015). That is a typical value for the month, not a live reading.
Explore Highlands-Redwater Lake across LakeQuality
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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)
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