Okaloosa-Roberts Lake
Okaloosa County, Florida22 acresView mapDirections
Florida DEP publishes the water-quality measurements for Okaloosa-Roberts Lake. Here is what has been measured.
- Mesotrophic
Okaloosa-Roberts Lake in Okaloosa County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4.5 ft visibility. Phosphorus: 7.5 µg/L. Surface area: 22 acres.
Okaloosa-Roberts Lake is a 22-acre mesotrophic lake in Okaloosa County, Florida. Overall water quality is improving over recent sampling years. Compared to the 14 other monitored lakes in Okaloosa County, Okaloosa-Roberts Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-05-08. 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. Check local advisories before you swim.
Whether Okaloosa-Roberts 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 Okaloosa-Roberts Lake
These are the measurements Florida DEP publishes for Okaloosa-Roberts 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 4.5 ft. Phosphorus 7.5 µg/L. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 7.5µg/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. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Okaloosa-Roberts Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Okaloosa-Roberts Lake typically sits around 71°F at the surface in October. Summer average is about 79°F. Usually warmest in Aug (about 80°F) and coldest in Jan (about 56°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (56°F) to its warmest (80°F).
Typical surface water temperature by month, from 282 field readings (2011–2025) via the EPA Water Quality Portal. See the full Okaloosa-Roberts Lake water temperature breakdown →
Lake Details
Surface area
22 acres
No bathymetric survey has been published for Okaloosa-Roberts Lake, so its depth is not documented here.
Stays via Stay22
Stays near Okaloosa-Roberts Lake
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Fishing Okaloosa-Roberts Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Stable5 years
Phosphorus
Improving-0.4 µg/L/yr5 years
Reservoir Info (USACE NID)
Okaloosa-Roberts Lake is a man-made reservoir impounded by the James Robert Lake Dam (completed 1966), built primarily for recreation on the Swift Creek; earth-type dam, 14 ft tall and 490 ft long.
- Surface area
- 22 ac
- Normal storage
- 107 ac-ft
- Max storage
- 149 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Low
- Owner
- Florida Freshwater Fish and Wildlife Conservation Commission
All listed purposes: Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID FL00014 · Operator website · Matched by proximity (0.45 km)
Nearby Lakes in Okaloosa County
Frequently asked questions about Okaloosa-Roberts Lake
Where is Okaloosa-Roberts Lake?
- Okaloosa-Roberts Lake is a lake in Okaloosa County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Okaloosa-Roberts Lake?
- Okaloosa-Roberts Lake in Okaloosa County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4.5 ft visibility. Phosphorus: 7.5 µg/L. Surface area: 22 acres.
Is Okaloosa-Roberts Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Okaloosa-Roberts Lake?
- Okaloosa-Roberts Lake typically sits around 71°F at the surface in October, from 282 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
100 measurements from 3 monitoring stations, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX100 samples · 2020–2022
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.