Seminole-Horseshoe Lake
Seminole County, FloridaView mapDirections
No nutrient or algae sampling on record from Florida DEP for this lake.
- Impaired · Impaired biota (cause unknown)
- Limited data
Seminole-Horseshoe Lake in Seminole County, Florida has water-quality measurements published by Florida DEP, shown here as reported.
Seminole-Horseshoe Lake is a lake in Seminole County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2023-04-05. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Seminole-Horseshoe Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown). Check local advisories before you swim.
Whether Seminole-Horseshoe 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 Seminole-Horseshoe Lake
These are the measurements Florida DEP publishes for Seminole-Horseshoe 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 Seminole-Horseshoe Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Seminole-Horseshoe Lake typically sits around 80°F at the surface in October. Summer average is about 85°F. Usually warmest in Aug (about 86°F) and coldest in Dec (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 (86°F).
Typical surface water temperature by month, from 34 field readings (2010–2019) via the EPA Water Quality Portal. See the full Seminole-Horseshoe Lake water temperature breakdown →
Stays via Stay22
Stays near Seminole-Horseshoe Lake
Compare lakeside cabins, hotels, and vacation rentals near Seminole-Horseshoe Lake in Seminole 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 Seminole-Horseshoe Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Fishing Seminole-Horseshoe Lake
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+10.2 µg/L/yr5 years
EPA Impairment Status
Seminole-Horseshoe 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.
Source: EPA ATTAINS assessment unit FL2991D · Official waterbody report
Nearby Lakes in Seminole County
Frequently asked questions about Seminole-Horseshoe Lake
Where is Seminole-Horseshoe Lake?
- Seminole-Horseshoe Lake is a lake in Seminole County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Seminole-Horseshoe Lake?
- Seminole-Horseshoe Lake in Seminole County, Florida has water-quality measurements published by Florida DEP, shown here as reported.
Is Seminole-Horseshoe Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Seminole-Horseshoe Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown). Check local advisories before you swim.
What is the water temperature of Seminole-Horseshoe Lake?
- Seminole-Horseshoe Lake typically sits around 80°F at the surface in October, from 34 EPA Water Quality Portal field readings (2010–2019). That is a typical value for the month, not a live reading.
Explore Seminole-Horseshoe Lake across LakeQuality
Planning a trip around Canaveral?
Seminole-Horseshoe Lake is about 25 miles from Canaveral National Seashore. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Canaveral →More lakes in Florida
Other Lakes in Florida
Where this data comes from
3 measurements from 3 monitoring stations, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX3 samples · 2023
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