Lake Allen Middle
Walton County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lake Allen Middle. Here is what has been measured.
- Eutrophic
- Impaired · Oxygen depletion (low DO)
Lake Allen Middle in Walton County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.5 ft visibility. Phosphorus: 19 µg/L.
Lake Allen Middle is a productive, nutrient-rich eutrophic lake in Walton County, Florida. Compared to the 83 other monitored lakes in Walton County, Lake Allen Middle ranks #17 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-01-29. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Lake Allen Middle is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO), pH / acidity. Check local advisories before you swim.
Whether Lake Allen Middle 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 Lake Allen Middle
These are the measurements Florida DEP publishes for Lake Allen Middle, 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 2.5 ft of visibility. Phosphorus 19 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 19µg/L | Good GoodFairPoor |
| 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. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Allen Middle
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake Allen Middle typically sits around 72°F at the surface in October. Summer average is about 86°F. Usually warmest in Jul (about 87°F) and coldest in Jan (about 55°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (55°F) to its warmest (87°F).
Typical surface water temperature by month, from 414 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Allen Middle water temperature breakdown →
Stays via Stay22
Stays near Lake Allen Middle
Compare lakeside cabins, hotels, and vacation rentals near Lake Allen Middle in Walton 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 Allen Middle
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Follow Lake Allen Middle’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lake Allen Middle
Water Quality Trend: Stable
Based on 5 years of monitoring (2020–2024).
Water clarity
Stable5 years
Phosphorus
Stable-0.25 µg/L/yr5 years
EPA Impairment Status
Lake Allen Middle is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit FL959H · Official waterbody report
Nearby Lakes in Walton County
Frequently asked questions about Lake Allen Middle
Where is Lake Allen Middle?
- Lake Allen Middle is a lake in Walton County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Lake Allen Middle?
- Lake Allen Middle in Walton County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.5 ft visibility. Phosphorus: 19 µg/L.
Is Lake Allen Middle safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Allen Middle is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO), pH / acidity. Check local advisories before you swim.
What is the water temperature of Lake Allen Middle?
- Lake Allen Middle typically sits around 72°F at the surface in October, from 414 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Lake Allen Middle across LakeQuality
More lakes in Florida
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
118 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- CHOCTAWHATCHEE BASIN ALLIANCE
21FLCBA_WQX118 samples · 2020–2025
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database