Little Lake Grassy
Highlands County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Little Lake Grassy. Here is what has been measured.
- Limited data
Little Lake Grassy in Highlands County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 14.5 µg/L.
Little Lake Grassy is a lake in Highlands County, Florida. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-11-12. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Little Lake Grassy 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 Lake Grassy
These are the measurements Florida DEP publishes for Little Lake Grassy, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3 ft of visibility. Phosphorus 14.5 µg/L. TSI 52.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 14.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| 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. | 52 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Little Lake Grassy
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Little Lake Grassy typically sits around 78°F at the surface in November. Summer average is about 87°F. Usually warmest in Aug (about 88°F) and coldest in Feb (about 65°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (65°F) to its warmest (88°F).
Typical surface water temperature by month, from 21 field readings (2010–2024) via the EPA Water Quality Portal. See the full Little Lake Grassy water temperature breakdown →
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Stays near Little Lake Grassy
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Fishing Little Lake Grassy
Water Quality Trend: Improving
Based on 4 years of monitoring (2020–2024).
Water clarity
Improving4 years
Phosphorus
Improving-0.86 µg/L/yr4 years
Nearby Lakes in Highlands County
Frequently asked questions about Little Lake Grassy
Where is Little Lake Grassy?
- Little Lake Grassy is a lake in Highlands 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 Lake Grassy?
- Little Lake Grassy in Highlands County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 14.5 µg/L.
Is Little Lake Grassy safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Little Lake Grassy?
- Little Lake Grassy typically sits around 78°F at the surface in November, from 21 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Explore Little Lake Grassy across LakeQuality
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Where this data comes from
10 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples10 samples · 2024
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.