shows an existing road and existing culvert. Evaluate the hydraulic adequacy of the culvert for a design discharge of 860 cfs and AHE equal to the top of road, or elevation 184.5. Computed tailwater...

shows an existing road and existing culvert. Evaluate the hydraulic adequacy of the culvert for a design discharge of 860 cfs and AHE equal to the top of road, or elevation 184.5. Computed tailwater depth is 3.9 feet, giving a tailwater elevation of 181.3. If the culvert is inadequate, design a replacement culvert using flared wingwalls and a square edge entrance. Also, design riprap outlet protection if needed. shows the existing stream profile.