The need for FEMA basin construction stemmed from flooding issues in Woodland Hills, UT, occurring after the wildfires of 2018 in Payson Canyon. The lack of trees and underbrush led to stormwater and debris issues after rain storms and winter runoff.
This heavy civil construction project intended to build a 6.7-acre basin that would catch runoff water and debris, then discharge the water at a controlled rate into a new pipe and, finally, into a new ditch. This required a new channel to be cut at the high side to collect and convey all water into the basin and allow for erosion protection using the existing concrete K Rail that the city was using to protect the property owners along the city streets of Woodland Hills, UT.
The FEMA basin required the installation of a concrete outlet structure that would discharge at a set flow rate through a new 24″ corrugate plastic pipe into a newly designed ditch 390′ downstream of the basin.
Heavy Civil Construction & Excavation
This basin construction required 42,000 CY of excavation, 390 LF of 24″ HDPE pipe, 173 LF of K Rail for erosion control, and 30 CY of concrete installed at the outlet structure & two cutoff walls.