Mud Lake Dock
Mud Lake Dock in Hillsborough County, Florida has a water quality grade of D (Nutrient-rich). Phosphorus: 249 µg/L.
- 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 Mud Lake Dock →
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Mud Lake Dock 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, Mud Lake Dock ranks #120 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-06-19. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria B · 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.
Based on E. coli testing, Mud Lake Dock rarely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 2.8% of 36 samples across 6 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water Quality Grade: D (Nutrient-rich)
No clarity data. Phosphorus level: 249 µg/L. Trophic State Index: 84.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 249 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 84 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Mud Lake Dock
Compare lakeside cabins, hotels, and vacation rentals near Mud Lake Dock 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 Mud Lake Dock are listed below.
Top-rated places to stay near Mud Lake Dock
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Fishing Mud Lake Dock
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
Mud Lake Dock 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 (2.08 km)
County Ranking
Ranked #120 of 124 lakes in Hillsborough County
Nearby Lakes in Hillsborough County
Frequently asked questions about Mud Lake Dock
Where is Mud Lake Dock?
- Mud Lake Dock 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 Mud Lake Dock?
- Mud Lake Dock in Hillsborough County, Florida has a water quality grade of D (Nutrient-rich). Phosphorus: 249 µg/L.
Is Mud Lake Dock safe to swim in?
- Based on E. coli testing, Mud Lake Dock rarely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 2.8% of 36 samples across 6 seasons. That works out to a bacteria swim-safety grade of B — a historical summary of past testing, not a current reading. Mud Lake Dock has a water quality grade of D (Nutrient-rich). Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
Explore Mud Lake Dock across LakeQuality
More Florida Lake Rankings
Other Grade D Lakes in Florida
Hypereutrophic Lakes in Florida
Where this data comes from
38 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples38 samples · 2020–2025
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