Region
Pennsylvania
3
Tennessee
3
Chester County
2
Minnesota
2
Arnold Air Force Base
1
Bear Creek (Tenn. and Ky.)
1
California
1
Delaware
1
Florida
1
Humboldt River Watershed
1
Lehigh County
1
Louisiana
1
Massachusetts
1
Memphis Region
1
Nevada
1
New Castle County
1
Oak Ridge Region
1
Pasco County
1
Rochester
1
Rock River Region (Wis. and Ill.)
1
Saint Louis Park
1
Santa Barbara County
1
Texas
1
Trans-Pecos (Tex. and N.M.)
1
Treasure Valley (Idaho and Or.)
1
Utah
1
Valley Creek (Pa.)
1
Wisconsin
1