APPENDIX XXIV - PERMISSIBLE VELOCITIES TABLE OF PERMISSIBLE VELOCITIES FOR FLOWING WATER Range2 Permissible Velocity1 Cover (Percent) (Ft. Per Second) Kentucky Bluegrass or 0-5 4 Tall Fescue or 5-10 4 Smooth Brome Over 10 3 Mixtures or 0-52 4 Reed Canary 5-10 3 Red Top or 3 Red Fescue 0-5 2.5 1 Any design exceeding the above velocities or having a critical flow shall be designed using rock or other suitable erosion resistant material. 2 Do not use slopes steeper than 10 percent except for vegetated side slopes in combination with a stone, concrete, or highly resistant vegetative center section. 3 Do not use on slopes steeper than 5 percent except for vegetated side slopes in combination with a stone, concrete, or highly resistant vegetative center section.
APPENDIX XXIV - PERMISSIBLE VELOCITIES TABLE OF PERMISSIBLE VELOCITIES FOR FLOWING WATER Cover Range2 (Percent) Permissible Velocity1 (Ft. Per Second) Kentucky Bluegrass or Tall Fescue or Smooth Brome 0-5 5-10 Over 10 4 4 3 Mixtures or Reed Canary 0-52 5-10 4 3 Red Top or Red Fescue 3 0-5 2.5 1 Any design exceeding the above velocities or having a critical flow shall be designed using rock or other suitable erosion resistant material. 2 Do not use slopes steeper than 10 percent except for vegetated side slopes in combination with a stone, concrete, or highly resistant vegetative center section. 3 Do not use on slopes steeper than 5 percent except for vegetated side slopes in combination with a stone, concrete, or highly resistant vegetative center section.
2012-Village-of-Johnstown-Development-Regulations-Working-Document11.docx