Crystal Lake
Crystal Lake in Rankin County, Mississippi has a water quality grade of D (Nutrient-rich). Water clarity: 1.4 ft visibility. Phosphorus: 70 µg/L. Chlorophyll-a (algae): 29.1 µg/L.
- Clarity
- 1.4 ft
- Type
- Eutrophic
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Crystal Lake →
Crystal Lake is a productive, nutrient-rich eutrophic lake in Rankin County, Mississippi. Water quality is graded D based on 2 sampling years through 2025. Limited fish-species data available. Public access is available with 3 public boat landings. Compared to the 2 other monitored lakes in Rankin County, Crystal Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-10-13. Grade methodology: LakeGrade methodology.
Watch Crystal Lake water quality
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Swimming Safety
Grade onlyAlgae risk
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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 1.4 ft of visibility. Phosphorus level: 70 µg/L. Chlorophyll-a: 29.1 µg/L. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.4 ft | Not graded |
| Phosphorus | 70 µg/L | Poor |
| Chlorophyll-a (Algae) | 29.1 µg/L | Poor |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Crystal Lake
Compare lakeside cabins, hotels, and vacation rentals near Crystal Lake in Rankin County, Mississippi — 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Crystal Lake are listed below.
Top-rated places to stay near Crystal Lake
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Recreation & Access
- LeFleur's State ParkPublic
- LeFleur's State ParkPublic
- Crystal LakePublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Crystal Lake
County Ranking
Ranked #2 of 3 lakes in Rankin County
Nearby Lakes in Rankin County
Frequently asked questions about Crystal Lake
Where is Crystal Lake?
- Crystal Lake is a lake in Rankin County, Mississippi. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Crystal Lake?
- Crystal Lake in Rankin County, Mississippi has a water quality grade of D (Nutrient-rich). Water clarity: 1.4 ft visibility. Phosphorus: 70 µg/L. Chlorophyll-a (algae): 29.1 µg/L.
Is Crystal Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Crystal Lake has a water quality grade of D (Nutrient-rich). Algae concentration (chlorophyll-a) is 29.1 µg/L. Always check local health department advisories before swimming.
Are there boat ramps on Crystal Lake?
- Crystal Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include LeFleur's State Park, LeFleur's State Park, Crystal Lake. Public access is listed as yes.
Explore Crystal Lake across LakeGrade
More Mississippi Lake Rankings
Other Grade D Lakes in Mississippi
Eutrophic Lakes in Mississippi
Where this data comes from
107 measurements from 1 monitoring station, 2022–2025. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY
21MSWQ_WQX107 samples · 2022–2025
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
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
Named boat-access points from the USGS National Boat Ramps inventory