Civil Engineering | Water Resources

HHPR has analyzed over 600 miles of rivers and several lakes. We have studied rivers ranging in size from the Columbia and Willamette Rivers in Oregon and the Clark Fork in Idaho to small tributaries. HHPR has performed hydrologic and hydraulic analyses for the Federal Emergency Management Agency and the Corps. of Engineers. Letters of commendation have been received from the Corps. of Engineers for our hydraulic modeling of the Cowlitz and Toutle Rivers and from the Federal Emergency Management Agency for several studies in Oregon.

Sample Project Experience:

Upper Kellogg Creek Flood Plain Analysis
Client: Clackamas County WES
Location: Clackamas County, OR

Highway 213/Beavercreek Culvert Replacement
Client: Clackamas County
Location: Oregon City, OR

Sherwood Downtown Streetscape Drainage
Client: EDAW
Location: Sherwood, OR

Leupold Stevens Wetland & NRA
Client: GBD Architects, Inc.
Location: Beaverton, OR

Grand Ronde Care and Senior Housing Center Project
Client: LRS Architects
Location: Grand Ronde, OR

The Jeffrey
Client: Ankrom Moisan Associated Architects
Location: Portland, OR

Clark County Fire District No. 12 Station No. 1
Client: Office of Architecture
Location: Ridgefield, WA

Capital Manor Remodel/Expansion
Client: Ankrom Moisan Associated Architects
Location: Salem, OR

Railroad Street Retaining Wall
Client: City of Sherwood
Location: Sherwood, OR

Columbia Heights
Client: DeCal Custom Homes & Construction Inc.
Location: St. Helens, OR

88th Street (NE Hwy 99 to NE St. Johns Road)
Client: Clark County
Location: Vancouver, WA

Burton Road 3 28th St. (112th to 145th Ave.)
Client: City of Vancouver
Location: Vancouver, WA

Covinton Middle School
Client: LSW Architects
Location: Vancouver, WA

Felida Middle School (VSD)
Client: LSW Architects
Location: Vancouver, WA

Music Building at Clark College
Client: Harder/JFC Architects Inc.
Location: Vancouver, WA

NE 49th St. (112th Ave. - 122 Ave.)
Client: City of Vancouver
Location: Vancouver, WA

Pacific Crest Medical Office Building
Client: Office of Architecture
Location: Vancouver, WA

Thomas Jefferson Middle School Water Easement
Client: Vancouver School District #37
Location: Vancouver, WA

WSU Student Service Center
Client: Zimmer Gunsul Frasca Architects LLP
Location: Vancouver, WA

Winlock High/Middle School Addition
Client: Harder/JFC Architects Inc.
Location: Winlock, WA

Sunnyside Road Phase 3B
Client: Clackamas County
Location: Clackamas, OR