Arkansas Lake Water Quality

Across {{stateName}}, 149 lakes carry an active water-quality grade spread over 54 counties. The underlying measurements come from {{agency}}, alongside federal programs and volunteer monitoring networks. A-grade lakes are scarce in {{stateName}}: about 12% of the dataset. Most lakes here sit in C or D — productive, often shallow, frequently algal in late summer.

Eutrophic conditions dominate — nutrient-loaded, productive, with algal pressure that shows up most years in late summer. These lakes tend to be shallow, agricultural-watershed, and over-warmed by the time July ends. The cleanest county on average is Fulton (grade A); the most-stressed is Desha. The gap between the top and bottom counties is large enough that "{{stateName}} lake water quality" hides real local variation.