Flood Plain / Drainage

When working or living around rivers or other bodies of water, it is critical to protect yourself and property by properly identifying flood hazard zones. Flooding occurs on a wide range of drainage courses including lakes, rivers, streams, and intermittent drainageways. By identifying the flood hazard zones, an owner can ensure that their personal property will be safe from flooding issues.

REL can help with a wide variety of flood plain and drainage related concerns. The following are examples of services that can be provided by REL professional engineers and surveyors:
  • 100-Year Flood Plain Determinations
    • Hydraulic Analysis
    • HEC-RAS Hydrologic Modeling
    • Flood Plain Mapping
  • Culvert / Bridge Capacity Analysis and Sizing
  • Mitigating Localized Flooding Concerns
  • Stream Restoration / Relocation
  • FEMA Mapping
  • Dam Analysis / Permitting
  • Dam Failure Analysis
    • Operation / Maintenance Plans
    • Emergency Action Plan Development
  • Dam Inspections
  • Dam Removal
  • FEMA Flood Hazard Mapping
    • Letter of Map Amendments (LOMA)
    • Letter of Map Revision (LOMR)
    • Conditional Letter of Map Revision (CLOMR)
  • Elevation Certificates