Crystal Lake
Rankin County, MississippiView mapDirections
MDEQ publishes the water-quality measurements for Crystal Lake. Here is what has been measured.
- Eutrophic
- Public access
Crystal Lake in Rankin County, Mississippi has water-quality measurements published by MDEQ, shown here as reported. Water clarity: 1.4 ft visibility. Phosphorus: 70 µg/L. Chlorophyll-a (algae): 29.1 µg/L.
Crystal Lake is a productive, nutrient-rich eutrophic lake in Rankin County, Mississippi. Limited fish-species data available. Public access is available with 1 public boat landing. 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. Methodology: how these readings are compared.
What Crystal Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyAlgae risk
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 Crystal Lake is safe to swim in today is a call for the Mississippi Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Crystal Lake
These are the measurements MDEQ publishes for Crystal Lake, 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 1.4 ft of visibility. Phosphorus 70 µg/L. Chlorophyll-a 29.1 µg/L. TSI 67.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 70µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 29.1µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 67 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Crystal Lake
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
- Crystal LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Crystal Lake are listed below.
Top-rated places to stay near Crystal Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Fishing Crystal Lake
Nearby Lakes in Rankin County
Frequently asked questions about Crystal Lake
Where is Crystal Lake?
- Crystal Lake is a lake in Rankin County, Mississippi. Its water-quality measurements are published by MDEQ and shown on this page as reported.
What is the water quality of Crystal Lake?
- Crystal Lake in Rankin County, Mississippi has water-quality measurements published by MDEQ, shown here as reported. Water clarity: 1.4 ft visibility. Phosphorus: 70 µg/L. Chlorophyll-a (algae): 29.1 µg/L.
Is Crystal Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Crystal Lake?
- Crystal Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Crystal Lake. Public access is listed as yes.
Can I fish at Crystal Lake?
- Crystal Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Mississippi's fish and wildlife agency, so check its current regulations before you go.
Explore Crystal Lake across LakeQuality
More lakes in Mississippi
Other 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)
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
Named boat-access points from the USGS National Boat Ramps inventory