Stillwater’s civil and environmental engineers work closely with our geomorphologists, biologists and restoration ecologists to develop project designs that provide maximum environmental resource benefits while maintaining other beneficial uses such as flood protection, erosion control, water supply, and water quality. Our engineering team has years of practical on-the-ground experience which provides the basis for innovative science-based solutions. We integrate a broad range of technical issues to design cost-effective projects that fit within their physical environment while supporting and enhancing aquatic and terrestrial communities.

Our areas of expertise in environmental engineering include:

• Restoration Engineering Design: Instream habitat enhancement, streambank stabilization, off-channel and floodplain habitat enhancement, improving stream network connectivity (levee setbacks and barrier/dam removal), and treatment wetlands
• Rural Infrastructure Improvements: Culvert sizing and upgrade design, road evaluations, engineered grading plans
• Field Support: Topographic surveys, stream gaging, construction management
• Stormwater Management: QSP-qualified SWPPP Practioners, Low Impact Development (LID) design
• Hydrologic and Hydraulic Analyses: Hydrologic modeling/assessments, hydraulic modeling in HEC-RAS and SMS, sediment transport modeling
• Stream Flow Enhancement: Groundwater recharge, agricultural pond design, water availability analyses
• Fish Passage: Culvert passage analysis, engineered fish passage design, construction-related fish rescue, relocation, and monitoring
• Sea Level Rise: Flood management/vulnerable areas mitigation design
• Treatment wetlands: evaluation, design, and pilot studies

We commonly collaborate with leading academic scientists and engineers, and our designs and analyses are subjected to a rigorous peer review process that draws on the expertise of senior staff. We have built a strong reputation for providing sound and strategic engineering support for our clients.