Service Area

Flood Control And Drainage Protection

Safeguarding Health And Infrastructure

Pairing The Best Analytical Tools  With An Experienced Team  

Water discharging from large diameter drainage pipes.
Terraphase’s modeling team uses advanced software to evaluate drainage and flooding conditions, designing effective solutions for infrastructure protection, channel stabilization, and peak flow attenuation. Our modelers work closely with our civil engineers to ensure designs are both practical and responsive to client needs, delivering solutions that maximize benefits and meet stakeholder needs. Our project expertise includes:
  • Federal Emergency Management Agency (FEMA) Map Revision:
  • Letter of Map Amendment (LOMA)
  • Conditional Letter of Map Revision (CLOMR)
  • Letter of Map Revision (LOMR)
  • Physical Map Revision (PMR)
  • Floodplain analysis
  • Hydrologic and hydraulic studies
  • Flood protection planning and design
  • Scour (degradation) and deposition (aggradation) studies
  • Local scour analysis
  • Stabilization analysis and design

Representative Projects

See How We’ve Made A Difference Across Diverse Industries

Meet Our

Flood Control and Drainage Senior Practitioners

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Explore More About Our Comprehensive Water Services

Christopher Alger, PG, CHG, CEG

Senior Principal Engineering Geologist

Christopher’s Profile