Culvert Sizing for Flood Damage Reduction, Phase 1 - Preliminary Guidelines

Technical and Scientific Advisory Committee (TSAC) Technical Paper No. 11, "Red River Basin Flood Damage Reduction Framework" (May 2004) identifies a number of measures for increasing temporary floodwater storage to reduce downstream flood damages. Culvert sizing is one of these measures. Technical Paper No. 11 provided limited guidance for implementation of culvert sizing. The purpose of this technical paper is to provide more detailed culvert sizing guidelines for flood damage reduction and prevention in the Red River Basin.