My X-section at Rio Polluto, Depth input example    
.03 N 
.0002 slope
333 channel length
       10        0
       30    -3.75 
       40   -30.65
       45   -31.85
       55   -28.35
       70   -30.05 
       90   -25.15
      110   -24.05
      119        0
                                         