Highlands-Annie Lake
Highlands-Annie Lake in Highlands County, Florida has a water quality grade of B (Good). Water clarity: 7 ft visibility. Phosphorus: 9 µg/L.
- Clarity
- 7 ft
- Type
- Mesotrophic
- Trend
- ↓ Declining
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Highlands-Annie Lake is a mesotrophic lake in Highlands County, Florida. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is declining over recent sampling years. Compared to the 72 other monitored lakes in Highlands County, Highlands-Annie Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-16. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Moderate clarity, visible to about 7 ft. Phosphorus level: 9 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7 ft | Not graded |
| Phosphorus | 9 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Highlands-Annie Lake
Compare lakeside cabins, hotels, and vacation rentals near Highlands-Annie 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-Annie Lake
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Fishing Highlands-Annie Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.635 m/yr | 5 |
| Phosphorus | ↓ Declining | +0.6 µg/L/yr | 5 |
EPA Impairment Status
Highlands-Annie Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL1938H · Official waterbody report · Matched by proximity (0.05 km)
County Ranking
Ranked #6 of 73 lakes in Highlands County
Nearby Lakes in Highlands County
Frequently asked questions about Highlands-Annie Lake
Where is Highlands-Annie Lake?
- Highlands-Annie Lake is a lake in Highlands County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Highlands-Annie Lake?
- Highlands-Annie Lake in Highlands County, Florida has a water quality grade of B (Good). Water clarity: 7 ft visibility. Phosphorus: 9 µg/L.
Is Highlands-Annie Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Highlands-Annie Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Highlands-Annie Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
354 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_WQX354 samples · 2020–2025
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