Name Sites Samples
Pratt County 2 2
Prentiss County 2 5
Presidio County 29 160
Prince George County 5 68
Prince George's County 8 24
Prince William County 2 13
Pulaski County 3 11
Pulaski County 8 29
Pushmataha County 9 71
Putnam County 2 7
Putnam County 2 5
Putnam County 2 7
Putnam County 2 5
Putnam County 4 17
Queen Anne's County 2 5
Quitman County 3 11
Rains County 2 5
Ramsey County 1 4
Randall County 2 45
Randolph County 2 3
Randolph County 3 7
Randolph County 1 2
Rapides Parish 2 3
Rawlins County 2 12
Ray County 2 3
Real County 1 3
Red River County 5 11
Red River Parish 5 18
Refugio County 1 4
Republic County 1 9