Lake Umatilla
Lake County, FloridaEutrophic
Lake Umatilla is a productive, nutrient-rich eutrophic lake in Lake County, Florida. Water quality is graded C based on 2 sampling years through 2025. Compared to the 316 other monitored lakes in Lake County, Lake Umatilla ranks #205 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-03-03. Grade methodology: LakeGrade methodology.
Watch Lake Umatilla water quality
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 3.3 ft of visibility. Phosphorus level: 28 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | D |
| Phosphorus | 28 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #205 of 317 lakes in Lake County
Cleaner Lakes Within 30 Miles
Lake Umatilla holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Lake County
More Florida Lake Rankings
Other Grade C Lakes in Florida
Orange County · Clarity: 3.5 ft
Walton County · Clarity: 4.2 ft
Seminole County · Clarity: 4.5 ft
Seminole County · Clarity: 2.9 ft
Polk County · Clarity: 3.5 ft
Volusia County · Clarity: 4.5 ft
Eutrophic Lakes in Florida
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Lake Umatilla under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Florida'S Natural Growers - UmatillaUmatilla · 0.6 mi away · NPDES FL0105643Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-03-03
Monitoring stations: 2
Where to stay near Lake Umatilla
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