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OEI is committed to finding practical, scientifically rigorous, and innovative solutions to help address a wide variety of water and natual resource management issues facing our clients and our communities. 
Hydrology & Hydraulics -Hydrogeology - Geomorphology
Hydrology & Hydraulics
Watershed Modeling & Planning
Stream Restoration
Fish Passage Improvement
Flood Hazard Mitigation
 
 
 
 
Groundwater Availability
State Water Rights
Engineering Support Services
CEQA Analysis and Permitting
Expert Witness Services
 
 
 
 
 
 
 
 
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