The North Fork's main tributary is Panther Creek, located in Jasper County.

Deer, turkey, coyotes, foxes, squirrels and raccoons are common along the corridor, and there have been sightings of bobcats.

Several mountain lion sightings have been reported over the years, though no evidence has been found to support such claims.

A widely popular story among the locals is of the "Wild Woman of North Fork" which can be heard screaming sometimes late at night.

This may in fact be the call of a mountain lion which often sounds like a woman crying, although bobcats and foxes may make similar noises.

The North Fork's main tributary is named Panther Creek, suggesting that at one time mountain lions may have inhabited the area.

Non-game fish such as white suckers, common carp, and long-nosed and short-nosed gar are numerous.

Less productive bottomland fields are being reverted to brush land and wetlands, and shallow ponds have been created for migrating waterfowl.