Lake Conway
Lake Conway in Orange County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.6 ft visibility. Phosphorus: 10 µg/L.
- Clarity
- 4.6 ft
- Typical in August
- 88°F
- Trend
- ↑ Improving
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Why Lake Conway 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 Lake Conway, 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.
Lake Conway is a lake in Orange County, Florida. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-17. Grade methodology: LakeQuality methodology.
Watch Lake Conway water quality
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Swimming Safety
Not ratedBacteria D
Based on E. coli testing, Lake Conway frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 12.5% of 8 samples across 2 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water quality measurements for Lake Conway
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 4.6 ft. Phosphorus level: 10 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.6 ft | Not graded |
| Phosphorus | 10 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lake Conway
Compare lakeside cabins, hotels, and vacation rentals near Lake Conway in Orange 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 Conway
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Lake Conway typically sits around 88°F at the surface in August. Summer average is about 86°F. Usually warmest in Aug (about 88°F) and coldest in Dec (about 66°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 48 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Conway water temperature breakdown →
Fishing Lake Conway
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.38 m/yr | 5 |
| Phosphorus | → Stable | -0.05 µg/L/yr | 5 |
EPA Impairment Status
Lake Conway 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 FL3168A · Official waterbody report
Graded lakes near Lake Conway
Lake Conway has no grade, but these lakes within a short drive do.
Nearby Lakes in Orange County
Frequently asked questions about Lake Conway
Where is Lake Conway?
- Lake Conway is a lake in Orange 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 Lake Conway?
- Lake Conway in Orange County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.6 ft visibility. Phosphorus: 10 µg/L.
Is Lake Conway safe to swim in?
- Based on E. coli testing, Lake Conway frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 12.5% of 8 samples across 2 seasons. That works out to a bacteria swim-safety grade of D — a historical summary of past testing, not a current reading. Lake Conway is not rated for water quality — its monitoring record does not meet the evidence bar. Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
What is the water temperature of Lake Conway?
- Lake Conway typically sits around 88°F at the surface in August, from 48 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Lake Conway across LakeQuality
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Where this data comes from
4 measurements from 2 monitoring stations, 2023–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples4 samples · 2023–2025
Monitoring station identifiers (2)
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