The Oregon Department of Fish and Wildlife (ODFW) listed Tryon Creek as its highest priority for fish passage restoration in Western Oregon. The culvert on Tryon Creek at Boones Ferry Road is a nearly complete fish passage barrier that the City of Portland determined should be replaced with a new bridge. Mr. Gorman was responsible for the hydraulic modeling of the affected stream reach and the design of a series of step pools and channel modifications to provide fish passage for a broad range of flows in Tryon Creek which experiences extraordinary peak and low flows due to the high level of urbanization within the watershed. Mr. Gorman also managed the preparation of necessary Federal Emergency Management Agency (FEMA) documentation of proposed changes to the floodway and floodplain for use in a Letter of Map Revision (LOMR). The project is expected to go to construction in 2019.
Tryon Creek Boones Ferry Road Culvert Replacement – Portland, Oregon
