Robert'S Lake
Robert'S Lake in Okaloosa County, Florida has a water quality grade of B (Good). Water clarity: 4.5 ft visibility. Phosphorus: 7 µg/L. Surface area: 22 acres.
- Clarity
- 4.5 ft
- Typical in August
- 80°F
- Area
- 22 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
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Robert'S Lake is a 22-acre mesotrophic lake in Okaloosa County, Florida. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. Compared to the 14 other monitored lakes in Okaloosa County, Robert'S Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-04. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Murky, only visible to about 4.5 ft. Phosphorus level: 7 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.5 ft | Not graded |
| Phosphorus | 7 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Robert'S Lake
Compare lakeside cabins, hotels, and vacation rentals near Robert'S Lake in Okaloosa 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 Robert'S Lake
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Water Temperature
Robert'S Lake typically sits around 80°F at the surface in August. Summer average is about 80°F. Usually warmest in Jun (about 80°F) and coldest in Jan (about 55°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 280 field readings (2011–2025) via the EPA Water Quality Portal.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 22 acres |
No bathymetric survey has been published for Robert'S Lake, so its depth is not documented here.
Fishing Robert'S Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.05 m/yr | 5 |
| Phosphorus | ↑ Improving | -0.4 µg/L/yr | 5 |
Reservoir Info (USACE NID)
Robert'S 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 (0.44 km)
EPA Impairment Status
Robert'S Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Source: EPA ATTAINS assessment unit FL568 · Official waterbody report · Matched by proximity (1.5 km)
County Ranking
Ranked #2 of 15 lakes in Okaloosa County
Nearby Lakes in Okaloosa County
Frequently asked questions about Robert'S Lake
Where is Robert'S Lake?
- Robert'S Lake is a lake in Okaloosa County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Robert'S Lake?
- Robert'S Lake in Okaloosa County, Florida has a water quality grade of B (Good). Water clarity: 4.5 ft visibility. Phosphorus: 7 µg/L. Surface area: 22 acres.
Is Robert'S Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Robert'S Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Robert'S Lake?
- Robert'S Lake typically sits around 80°F at the surface in August, from 280 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
Explore Robert'S Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
255 measurements from 3 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- CHOCTAWHATCHEE BASIN ALLIANCE
21FLCBA_WQX255 samples · 2020–2025
Monitoring station identifiers (3)
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