O'Connor Environmental, Inc.

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

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.