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 drainage-ways. 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