Dexter Lake
Dexter Lake in Volusia County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.6 ft visibility. Phosphorus: 18 µg/L.
- Clarity
- 1.6 ft
- Trend
- ↑ Improving
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Why Dexter Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Dexter Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Dexter Lake is a lake in Volusia County, Florida. Overall water quality is improving over recent sampling years. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-09-17. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Dexter Lake
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 1.6 ft of visibility. Phosphorus level: 18 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 ft | Not graded |
| Phosphorus | 18 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Dexter Lake
Compare lakeside cabins, hotels, and vacation rentals near Dexter Lake in Volusia 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 Dexter Lake
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Recreation & Access
- Powell's CampgroundSemi-private
- Astor Landing Campground and Boat RampSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Dexter Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.023 m/yr | 5 |
| Phosphorus | → Stable | +1.31 µg/L/yr | 5 |
EPA Impairment Status
Dexter Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2921C · Official waterbody report
Graded lakes near Dexter Lake
Dexter Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Volusia County
Frequently asked questions about Dexter Lake
Where is Dexter Lake?
- Dexter Lake is a lake in Volusia County, Florida. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Dexter Lake?
- Dexter Lake in Volusia County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.6 ft visibility. Phosphorus: 18 µg/L.
Is Dexter Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Dexter Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Dexter Lake?
- Dexter Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Powell's Campground, Astor Landing Campground and Boat Ramp.
Explore Dexter Lake across LakeQuality
More Florida Lake Rankings
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
3 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 samples3 samples · 2024
Monitoring station identifiers (1)
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
Named boat-access points from the USGS National Boat Ramps inventory