Orange-Arnold Lake
Orange County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Orange-Arnold Lake. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
- Limited data
Orange-Arnold Lake in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4 ft visibility. Phosphorus: 23 µg/L.
Orange-Arnold Lake is a productive, nutrient-rich eutrophic lake in Orange County, Florida. Overall water quality is improving over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Orange-Arnold Lake ranks #263 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-03-22. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
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. Orange-Arnold Lake is listed impaired under Clean Water Act §303(d) (IR 5A) for algal growth, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Orange-Arnold Lake 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 Orange-Arnold Lake
These are the measurements Florida DEP publishes for Orange-Arnold Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4 ft. Phosphorus 23 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 23µg/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. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Orange-Arnold Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Orange-Arnold Lake typically sits around 77°F at the surface in October. Summer average is about 78°F. Usually warmest in Jun (about 79°F) and coldest in May (about 73°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (73°F) to its warmest (79°F).
Typical surface water temperature by month, from 12 field readings (2014–2015) via the EPA Water Quality Portal. See the full Orange-Arnold Lake water temperature breakdown →
Stays via Stay22
Stays near Orange-Arnold Lake
Compare lakeside cabins, hotels, and vacation rentals near Orange-Arnold Lake 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 Orange-Arnold Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Planning a whole trip? See where to stay at Florida’s top lakes →
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Fishing Orange-Arnold Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Improving5 years
Phosphorus
Improving-5.95 µg/L/yr5 years
EPA Impairment Status
Orange-Arnold Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5A).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
Source: EPA ATTAINS assessment unit FL3168Z3 · Official waterbody report
Nearby Lakes in Orange County
Frequently asked questions about Orange-Arnold Lake
Where is Orange-Arnold Lake?
- Orange-Arnold Lake is a lake in Orange County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Orange-Arnold Lake?
- Orange-Arnold Lake in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4 ft visibility. Phosphorus: 23 µg/L.
Is Orange-Arnold Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Orange-Arnold Lake is listed impaired under Clean Water Act §303(d) (IR 5A) for algal growth, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of Orange-Arnold Lake?
- Orange-Arnold Lake typically sits around 77°F at the surface in October, from 12 EPA Water Quality Portal field readings (2014–2015). That is a typical value for the month, not a live reading.
Explore Orange-Arnold Lake across LakeQuality
Planning a trip around Canaveral?
Orange-Arnold Lake is about 40 miles from Canaveral National Seashore. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Canaveral →More lakes in Florida
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
9 measurements from 3 monitoring stations, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX9 samples · 2024–2025
Monitoring station identifiers (3)
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