StreamCrossing
Culverts
Undefined
Minor
Moderate
Severe
Basins
AU GRES-RIFLE
AU SABLE
BAD-MONTREAL
BETSIE-PLATTE
BETSY-CHOCOLAY
BIRCH-WILLOW
BLACK
BLACK-MACATAWA
BLACK-PRESQUE ISLE
BOARDMAN-CHARLEVOIX
BREVOORT-MILLECOQUINS
BRULE
CARP-PINE
CASS
CEDAR-FORD
CHEBOYGAN
CLINTON
DEAD-KELSEY
DETROIT
ESCANABA
FISHDAM-STURGEON
FLINT
HURON
KALAMAZOO
KAWKAWLIN-PINE
KEWEENAW PENINSULA
LAKE ST. CLAIR
LITTLE CALUMET-GALIEN
LONE LAKE-OCQUEOC
LOWER GRAND
MANISTEE
MANISTIQUE
MAPLE
MENOMINEE
MICHIGAMME
MUSKEGON
ONTONAGON
OTTAWA-STONY
PERE MARQUETTE-WHITE
PIGEON-WISCOGGIN
PINE
RAISIN
SAGINAW
SHIAWASSEE
ST. CLAIR
ST. JOSEPH
ST. MARYS
STURGEON
TACOOSH-WHITEFISH
TAHQUAMENON
THORNAPPLE
THUNDER BAY
TIFFIN
TITTABAWASSEE
UPPER GRAND
WAISKA
<all other values>