Waldenlake
Waldenlake in Hillsborough County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 1.1 ft visibility. Phosphorus: 205 µg/L.
- Clarity
- 1.1 ft
- Typical in August
- 86°F
- Type
- Hypereutrophic
- Trend
- ↑ Improving
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Waldenlake →
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Waldenlake is a highly nutrient-loaded hypereutrophic lake in Hillsborough County, Florida. Water quality is graded D based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. Compared to the 123 other monitored lakes in Hillsborough County, Waldenlake ranks #109 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-08-12. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria advisory
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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 1.1 ft of visibility. Phosphorus level: 205 µg/L. Trophic State Index: 78.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.1 ft | Not graded |
| Phosphorus | 205 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 78 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Waldenlake
Compare lakeside cabins, hotels, and vacation rentals near Waldenlake in Hillsborough 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 grade measures nutrients and algae, not lodging — cabins and rentals around Waldenlake are listed below.
Top-rated places to stay near Waldenlake
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Waldenlake typically sits around 86°F at the surface in August. Summer average is about 87°F. Usually warmest in Jun (about 88°F) and coldest in Jan (about 60°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 23 field readings (2010–2025) via the EPA Water Quality Portal. See the full Waldenlake water temperature breakdown →
Fishing Waldenlake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.1 m/yr | 2 |
| Phosphorus | ↑ Improving | -8.8 µg/L/yr | 5 |
EPA Impairment Status
Waldenlake 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 FL1561 · Official waterbody report · Matched by proximity (2.19 km)
County Ranking
Ranked #109 of 124 lakes in Hillsborough County
Nearby Lakes in Hillsborough County
Frequently asked questions about Waldenlake
Where is Waldenlake?
- Waldenlake is a lake in Hillsborough County, Florida. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Waldenlake?
- Waldenlake in Hillsborough County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 1.1 ft visibility. Phosphorus: 205 µg/L.
Is Waldenlake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Waldenlake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
What is the water temperature of Waldenlake?
- Waldenlake typically sits around 86°F at the surface in August, from 23 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Waldenlake across LakeQuality
More Florida Lake Rankings
Other Grade D Lakes in Florida
Hypereutrophic Lakes in Florida
Where this data comes from
21 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples21 samples · 2024–2025
Monitoring station identifiers (1)
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