Madison County Lake Quality
Mississippi, 2 lakes, average grade D (Nutrient-rich)
Only 2 lakes in Madison County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. On average, Madison County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Lake Lorman (C) is the cleanest in the county.
Where to stay near Madison County
Top-rated places to stay near Madison County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Madison County?
Get lake water-quality report cards plus the best cabin & lodging deals near Madison County — straight to your inbox. No spam, unsubscribe anytime.
Quick Answers for Madison County
Planning a trip? Check special fishing regulations for Lake Lorman — or check the official Mississippi fishing regulations.
All Lakes in Madison County
2 lakes2 graded lakes
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | CLake LormanMadison | C | 3.9 ft | 70 µg/L | 8.4 µg/L | No recent samples | Not recorded |
| 2 | FRoss Barnett ReservoirMadison | F | 1.7 ft | 70 µg/L | 35.3 µg/L | No recent samples | Not recorded |
Lake Match
Which lake suits how you actually use one?
Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.
Other Counties in Mississippi
See how Madison County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 49 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.