Habitats and Range
The brook trout inhabits small streams, creeks, lakes, and spring ponds. Some brook trout, referred to as sea-run brook trout, are anadromous. Brook trout are native to a wide area of eastern North America, but increasingly confined to higher elevations southward in the Appalachian Mountains to northern Georgia, Canada from the Hudson Bay basin east, the Great Lakes–Saint Lawrence system, and the upper Mississippi River drainage as far west as eastern Iowa.
The typical pH range of brook trout waters is 5.0 to 7.5, with pH extremes of 3.5 to 9.8 possible. Water temperatures typically range from 34 to 72°F (1 to 22°C).
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