Lake-Umatilla
Lake-Umatilla in Lake County, Florida has a water quality grade of B (Good). Water clarity: 4.4 ft visibility. Phosphorus: 17 µg/L.
- Clarity
- 4.4 ft
- Type
- Eutrophic
- Trend
- ↓ Declining
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Lake-Umatilla is a productive, nutrient-rich eutrophic lake in Lake County, Florida. Water quality is graded B based on 1 sampling years through 2023. Overall water quality is declining over recent sampling years. Compared to the 127 other monitored lakes in Lake County, Lake-Umatilla ranks #82 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2023-08-06. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLimited data
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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Murky, only visible to about 4.4 ft. Phosphorus level: 17 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.4 ft | Not graded |
| Phosphorus | 17 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 50 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake-Umatilla
Compare lakeside cabins, hotels, and vacation rentals near Lake-Umatilla in Lake 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 Lake-Umatilla
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Fishing Lake-Umatilla
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -1.025 m/yr | 3 |
| Phosphorus | ↓ Declining | +19.55 µg/L/yr | 3 |
EPA Impairment Status
Lake-Umatilla is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit FL2806A · Official waterbody report
County Ranking
Ranked #82 of 128 lakes in Lake County
Nearby Lakes in Lake County
Frequently asked questions about Lake-Umatilla
Where is Lake-Umatilla?
- Lake-Umatilla is a lake in Lake County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake-Umatilla?
- Lake-Umatilla in Lake County, Florida has a water quality grade of B (Good). Water clarity: 4.4 ft visibility. Phosphorus: 17 µg/L.
Is Lake-Umatilla safe to swim in?
- Good for swimming, clear water with low algae levels. Lake-Umatilla has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Lake-Umatilla across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
47 measurements from 3 monitoring stations, 2022–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX47 samples · 2022–2023
Monitoring station identifiers (3)
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