Flood Data Sources

Colorado Risk MAP

The purpose of the Colorado Risk MAP Program is to deliver quality data, technical assistance, and other non-regulatory tools that increase public awareness of flooding potential and lead to action that reduces risk to life and property.

Colorado Fluvial Hazard Mapping Program

The Colorado Water Conservation Board has developed methods for defining stream corridors, including lands adjacent to the stream channel that have been shaped by stream erosion and deposition under the prevailing flow and sediment regimes, as part of the Colorado Fluvial Hazard Zone Delineation Protocol. Fluvial Hazard Maps may be used to identify where the deposition and storage of water, sediment, and organic material is likely during a flood. The CWCB seeks to work with community organizations and planners to identify high priority areas for the development of Fluvial Hazard Maps.

Colorado Flood Decision Support System (DSS)

The Colorado Flood DSS is an online interactive mapping application that provides useful flood hazard information.

The application allows users to:

• Review effective floodplain boundaries
• See real-time weather and streamflow conditions
• Access local and county data related to flooding
• Access data related to historical floods, hazards, weather modification, watershed restoration, and FEMA’s National Flood Insurance Program

In addition, the DSS provides links to a wide range of additional resources for flood-related information.

FEMA Flood Map Service Center

The Flood Map Service Center is the official public source for flood hazard information produced in support of the National Flood Insurance Program. From this site, users can obtain official flood maps, access a range of other flood hazard products including Flood Insurance Studies (FIS), and take advantage of tools to better understand flood risk.

Colorado Hazus Flood Risk Data

The 2023-2028 Colorado Enhanced State Hazard Mitigation Plan includes planning-level flood loss estimates for every county in Colorado, as generated by Hazus, FEMA’s loss estimation software. This includes a summary of vulnerability and potential losses by county, as determined though modeling the one percent annual chance (100-year) floodplain and performing associated building and population risk assessments across the state.

Colorado National Flood Insurance Program (NFIP) information

State NFIP, repetitive loss, and Risk MAP data is available through the Colorado Water Conservation Board or the Division of Homeland Security and Emergency Management.

NFIP Policy and Claim Statistics by Jurisdiction

These policy and claim statistics provide routinely updated data on the number of policies in-force, amount of coverage, and premiums paid for each participating NFIP community, along with data on the number of insured losses and total payments of past claims.

Colorado Dam Safety Information

Upon request, the Colorado Division of Water Resources (DWR) can provide helpful data and information to local officials on existing dam structures, such as hazard classifications, emergency action plans, and dam failure inundation maps. Access to all such information is subject to DWR’s Public Access to Dam Files and Records policy.