Dunfordref Lake
Dunfordref Lake in Washington County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 11.5 ft visibility. Phosphorus: 5 µg/L.
- Clarity
- 11.5 ft
- Trend
- ↓ Declining
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Why Dunfordref 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 Dunfordref 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.
Dunfordref Lake is a lake in Washington County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2021-06-16. 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 Dunfordref Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 11.5 ft. Phosphorus level: 5 µg/L. Trophic State Index: 35.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11.5 ft | Not graded |
| Phosphorus | 5 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 35 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Dunfordref Lake
Compare lakeside cabins, hotels, and vacation rentals near Dunfordref Lake in Washington 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 Dunfordref Lake
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Fishing Dunfordref Lake
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -1 m/yr | 2 |
| Phosphorus | ↓ Declining | +1 µg/L/yr | 2 |
Graded lakes near Dunfordref Lake
Dunfordref Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Washington County
Frequently asked questions about Dunfordref Lake
Where is Dunfordref Lake?
- Dunfordref Lake is a lake in Washington 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 Dunfordref Lake?
- Dunfordref Lake in Washington County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 11.5 ft visibility. Phosphorus: 5 µg/L.
Is Dunfordref Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Dunfordref Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Dunfordref Lake across LakeQuality
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Where this data comes from
2 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FL Dept. of Environmental Protection, Northwest District
21FLPNS_WQX2 samples · 2021
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.