Soil limitations (NRCS)
z Flooding: Frequent or Occasional
z Depth to bedrock <40 inches
z Depth to cemented pan or layer<40 in
z Ponding likely
z Depth to high water table <4 ft
z Low permeability (24-60" depth)
<0.6 in/hr
z High permeability (24-60" depth) >6.0 in/hr
z Slope >15%