Installing and maintaining an anti-siphon device is easy-and prudent-to do. From "Hands-On Sailor" in our April 2008 issue
Flood Protection and Prevention - - Tips and Solution
Sewer Clean Check vs Sewer Flood Control System
Flood Control Valve, Flood Control Systems
Flood Control Chicago
Rarely used relief valve will divert Kern River floodwaters to California Aqueduct - Los Angeles Times
Flood Prevention How to Protect Home From Flooding
Stop Basement Sewer Flooding: Sewer Flood Gate Valve Demonstration
Backwater valves are installed in horizontal sewage pipes before they exit a building or sewage drain outside the building before its connection to an
110mm Non Return Valve Backflow Flood Prevention Single Stainless Steel Flap
Sewer Gate Valve Prevents Basement Flooding
Construct a floodwall barrier - Reduce Flood Risk