Q. What is the impact to the flow of the horizontal curb line IF the catch basin is totally surcharged from storm surface water flowing into it from along the curbs? Note, this total surcharging did occur during the March 2012 event, and it is also substantially full during most heavy storm events.
A.
[CITY] The air gap outside a home is designed to allow
for water to escape/discharge from a sump pump in case of an event where the
downstream storm lead and/or curb drain is not flowing due to blockage, high
flow conditions, etc.
Comments
Frank Burdick on 13 Feb, 2014: