The graphs shown below are from data being collected in 2004.

Sokol Park, near Czech Village SW on the Cedar River Trail
Cedar Lake Loop, near the northwest corner
McCloud Place NE, near 32nd Street along the Cedar River Trail
Boyson Road Hiawatha, at the trailhead of the Cedar Valley Nature Trail in Hiawatha
Boyson Trail, at Boyson Road, Marion
Sac & Fox Trail, at East Post Road
Sac & Fox Trail, at Cole Street