Office of the Dean
Phone: (208) 885-6470
Toll-free: 88-88-UIDAHO
Fax: (208) 885-6645
Email: deanengr@uidaho.edu

Janssen Engineering (JEB)
Room 125

875 Perimeter Drive MS 1011
Moscow, ID 83844-1011

Dean's Office Directory


Contact Denise Engebrecht
Phone: (208) 364-6123
Fax: (208) 364-3160
Email: denisee@uidaho.edu

Idaho Water Center
322 E. Front Street
Boise, ID 83702


Idaho Falls

Contact Debbie Caudle
Phone: (208) 282-7983
Fax: (208) 282-7929
Email: debrac@uidaho.edu

1776 Science Center Drive, Suite 306
Idaho Falls, Idaho 83402

Distance Education

Engineering Outreach
Phone: (208) 885-6373
Toll-free: (800) 824-2889
Fax: (208) 885-9249
E-mail: outreach@uidaho.edu


Hyporheic Flows in Gravel Bed Streams


The hyporheic zone is a band of permeable, saturated sediment surrounding a river, where stream flow and shallow groundwater mix. It includes riverbeds (shallow hyporheic zone), riverbanks, saturated sediments under dry bars (parafluvial hyporheic zone), and riparian and floodplain areas (floodplain hyporheic zone). It is characterized by intense physical and chemical gradients due to the mixing of groundwater and surface water by upwelling and down welling fluxes.


Hyporheic exchange (the mixing of stream flow and shallow groundwater) is poorly understood in gravel-bed rivers. These channels are particularly important habitat for salmonids, many of which are currently at risk worldwide and which incubate their offspring within the hyporheic zone.


We have been studying hyporheic exchange with laboratory experiments, numerical modeling and analytical solutions to investigate the effect of stream morphology on their hydraulic characteristics

Hypoheic proj photo

Hypoheic proj graph