Geiger Lake
Forrest County, Mississippi296 acresView mapDirections
MDEQ publishes the water-quality measurements for Geiger Lake. Here is what has been measured.
- Eutrophic
- Public access
Geiger Lake in Forrest County, Mississippi has water-quality measurements published by MDEQ, shown here as reported. Water clarity: 3.9 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 9.6 µg/L. Surface area: 296 acres.
Geiger Lake is a 296-acre productive, nutrient-rich eutrophic lake in Forrest County, Mississippi. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-10-07. 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 Geiger 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 Geiger Lake
These are the measurements MDEQ publishes for Geiger 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 3.9 ft. Phosphorus 40 µg/L. Chlorophyll-a 9.6 µg/L. TSI 56.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 40µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 9.6µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 56 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Geiger Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
296 acres
Public access
Yes
Listed by MDEQ
No bathymetric survey has been published for Geiger Lake, so its depth is not documented here.
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Stays near Geiger Lake
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Fishing Geiger Lake
Reservoir Info (USACE NID)
Geiger Lake is a man-made reservoir impounded by the Paul B. Johnson State Park Dam, built primarily for recreation; earth-type dam, 30 ft tall.
- Surface area
- 296 ac
- Max storage
- 7,200 ac-ft
- Hazard class
- Low
- Owner
- MISSISSIPPI DEPARTMENT OF WILDLIFE FISHERIES AND PARKS
Source: USACE National Inventory of Dams, NID ID MS02490 · Operator website · Matched by proximity (0.19 km)
Nearby Lakes in Forrest County
Frequently asked questions about Geiger Lake
Where is Geiger Lake?
- Geiger Lake is a lake in Forrest County, Mississippi. Its water-quality measurements are published by MDEQ and shown on this page as reported.
What is the water quality of Geiger Lake?
- Geiger Lake in Forrest County, Mississippi has water-quality measurements published by MDEQ, shown here as reported. Water clarity: 3.9 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 9.6 µg/L. Surface area: 296 acres.
Is Geiger Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Geiger Lake?
- Public access to Geiger Lake is listed as yes on the lake record. 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 Geiger Lake across LakeQuality
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Where this data comes from
86 measurements from 1 monitoring station, 2022–2024. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY
21MSWQ_WQX86 samples · 2022–2024
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.