5.6.3 Other Issues

Modeled High Water Locations

The HHPLS identified a number of locations where modeling predicts that public roads, private roads, or private drives might overtop during infrequent events, or where there may be minimal freeboard above the flood level (see Figure 2).   Local plans should identify observed or these potential locations and assess whether the risk of occasional flooding is acceptable or should be addressed.

Flow Velocity or Erosion Issues

The HHPLS identified a number of locations where modeling predicts that under existing or future development conditions higher velocities than desired ay result in erosion at outlets or culverts, potentially warranting erosion control or energy dissipation.  Local plans should identify observed or these potential locations, assess the need for such measures, and set forth a plan for preventing future erosion.