Major Clay Step features near Shorty's Island on the Kootenai River near Bonners Ferry, ID
The major clay step features are defined as having a vertical face that is greater than 1.5 meters. 
The clay step features were qualitately identified using an underwater video monitoring sysyem. 
The extent and magnitude of the clay steps were mapped using a muliteam bathymetric 
echosounder system.