Channel Elevation (ELV)                                                         
Drainage Area (FRAC)                                                            
Drainage direction (S)                                                          
River Class (IBN)                                                               
Contour Density (IROUGH)                                                        
Channel Density (ICHNL)                                                         
Reach Number (IREACH)                                                           
 Bare                
 forest              
 crops               
 wetland             
 water               
 impervious          
