Little Fish Lake
Orange County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Little Fish Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Mercury
Little Fish Lake in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.9 ft visibility. Phosphorus: 9 µg/L.
Little Fish Lake is a mesotrophic lake in Orange County, Florida. Water clarity is improving over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Little Fish Lake ranks #21 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-04. Methodology: how these readings are compared.
Swimming conditions
Readings onlyBacteria tested: low
Based on clarity and algae readings from past sampling — there is no 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, Little Fish Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 30 samples across 8 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.
Whether Little Fish 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 Little Fish Lake
These are the measurements Florida DEP publishes for Little Fish Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5.9 ft. Phosphorus 9 µg/L. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 9µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Little Fish Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Little Fish Lake typically sits around 79°F at the surface in October. Summer average is about 85°F. Usually warmest in Aug (about 87°F) and coldest in Jan (about 62°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (62°F) to its warmest (87°F).
Typical surface water temperature by month, from 67 field readings (2010–2025) via the EPA Water Quality Portal. See the full Little Fish Lake water temperature breakdown →
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Stays near Little Fish Lake
Compare lakeside cabins, hotels, and vacation rentals near Little Fish Lake in Orange 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.
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Fishing Little Fish Lake
Water Quality Trend: Stable
Based on 5 years of monitoring (2020–2024).
Water clarity
Improving5 years
Phosphorus
Worsening+1.75 µg/L/yr5 years
EPA Impairment Status
Little Fish Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL3170Z1 · Official waterbody report
Nearby Lakes in Orange County
Frequently asked questions about Little Fish Lake
Where is Little Fish Lake?
- Little Fish Lake is a lake in Orange County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Little Fish Lake?
- Little Fish Lake in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.9 ft visibility. Phosphorus: 9 µg/L.
Is Little Fish Lake safe to swim in?
- Based on E. coli testing, Little Fish Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 30 samples across 8 seasons. That is a historical summary of past bacteria testing, not a current reading and not a swimming clearance. Bacteria levels can spike quickly after heavy rain, so whether Little Fish Lake is safe to swim in today is a call for Florida's water agency and the county health department; check their current beach advisories before you swim.
What is the water temperature of Little Fish Lake?
- Little Fish Lake typically sits around 79°F at the surface in October, from 67 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
63 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 samples63 samples · 2020–2025
Monitoring station identifiers (1)
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