Storm water attenuation definition
Storm water attenuation means the process by which peak flows from precipitation are reduced and runoff velocities are slowed as a result of passing through a surface water body.
Storm water attenuation means the process by which peak flows from precipitation are reduced and runoff velocities are slowed as a result of passing through a surface water body. "Surface waters of the state" includes lakes, rivers, ponds, streams, inland waters, saltwaters, wetlands and all other surface waters and water courses within the jurisdiction of the state of Washington.