Floodplain Resources

Floodplain Mapping 
  • Contact SEMSWA for mapping assistance
  • MHFD Web Mapping – This website allows the user to type in a property address and find studies such as Flood Hazard Area Delineations in the area.
  • FEMA Map Service Center – This website allows the user to type in a property address and find the effective FEMA FIRMs. These maps are used for official flood insurance determinations. Preliminary and pending map updates are also available through this website.
Floodplain Permit Applications, Templates, and Checklists 

Please double check your properties jurisdiction (are you in Arapahoe County or the City of Centennial) before downloading a permit application

Arapahoe County Floodplain Development Permit Application

Use for all proposed projects located in the floodplain within Unincorporated Arapahoe County:

Arapahoe County Floodplain Development Permit (link to Arapahoe County website)

 

City of Centennial Floodplain Development Permit Application

Use for all proposed projects located in the floodplain within the City of Centennial:

City of Centennial Floodplain Development Permit

 

No Impact Letter Templates 

Use one of the following forms for projects within a FEMA, PMR, or FHAD floodplain area, and choose based on jurisdiction project is within (City or County):

Engineer's Certificaiton of No Impact Template (City)Engineer's Certification of No Impact Template (County)

Use one of the following forms for projects within "Approximate" floodplain areas (130 or greater acres flows to project area), and choose based on jurisdiction project is within (City or County):

Engineer's Certification of No Impact (Approximate Floodplain) Template (City)Engineer's Certification of No Impact (Approximate Floodplain) Template (County)

 

CLOMR/LOMR templates

Floodplain Modification Study and Conditional Letter of Map Revision (CLOMR) ChecklistLetter of Map Revision (LOMR) No CLOMR ChecklistLOMR Following  CLOMR ChecklistLOMR As-Built Drawing ChecklistEngineers Floodplain Certification StatementHydraulic Comparison Table

 

 

FEMA MT-1 and MT-2 forms

  1. MT-1: The FEMA forms for individual property owners (LOMA, LOMR-F) are located at:   https://www.fema.gov/flood-maps/change-your-flood-zone/paper-application-forms/mt-1
  2. MT-2: The FEMA forms for larger Capital Improvement projects (CLOMR/LOMR) are located at:  https://www.fema.gov/flood-maps/change-your-flood-zone/paper-application-forms/mt-2
Flood Risk Basics 
  1. Flood risk, hazard mitigation, and flood insurance information: http://www.floodsmart.gov
  2. Federal Emergency Management Agency website for information about all disasters, floods and mappings, and emergency management: www.fema.gov
  3. Local, real time gage monitoring - https://mhfd.org/
Protect Natural Floodplain Functions 
  1. Mile High Flood District - open channels and their natural functions: https://mhfd.org/wp-content/uploads/2019/12/08_Open-Channels.pdf 
  2. Cherry Creek Basin Water Quality Authority -  regulation 72 Guidance Document including discussion on stream preservation areas (Chapter VI), here: https://www.cherrycreekbasin.org/files/7d48e6edd/CCBWQA-CONTROL-REGULATION-72-STORMWATER-PERMIT-REQUIREMENTS-GUIDANCE-DOCUMENT.pdf 
  3. FEMA - benefits of natural floodplains https://www.fema.gov/floodplain-management/wildlife-conservation/benefits-natural
Floodplain Rules and Regulations 
Flood Hazards & Preparedness: Protect people and property 
Flood Insurance 

For more information, call the National Flood Insurance Program toll free at 1-800-427-4661, TDD 1-800-427-5593 www.fema.gov or www.floodsmart.gov

Flood Insurance for Real Estate Professionals 
Elevation Certificates in SEMSWA’s service area (List of addresses that have elevation certificates) 
Storm Event Photo Gallery (Examples of SEMSWA’s work and flooding in our area) 
Common Flood Terminology Defined 
How to Report Illegal Floodplain Development 
  1. Call SEMSWA at 303-858-8844
  2. Contact us using the “Contact Us / Report a Problem”