Possible Points: 20 points for the element.

Purpose of the Element: To reward communities that update the coastal erosion rates and regulatory maps at least every 5 years. Communities that are vulnerable to coastal erosion need accurate data in order to predict where and how quickly erosion is occurring. These data on erosion rates can be leveraged by communities in order to prioritize coastal areas for protection, restoration, or development. For more information see pages 440-13 - 440-14 of the CRS Coordinator’s Manual.

Potential to Double Count Credit: None.

Impact Adjustment: None.

Degree of Difficulty - Documentation: Low. The documentation required for this element is minimal. Communities must provide their ISO/CRS Specialist with a description of how mapped erosion rates or regulatory maps are updated as well as a certification that these rates/maps are updated at least every 5 years.

Degree of Difficulty - Implementation: Medium. In order to earn credit for this element, aerial photographs must be taken or reference marks evaluated every five years in order to estimate coastal erosion rates for a community. Many communities will not have the capacity to complete these tasks on their own, and will need to hire contractors or rely on the state to complete them. As a result, maintaining coastal erosion data can be a time consuming and expensive endeavor.

Screenshot of the North Carolina Oceanfront Erosion & Accretion Rates Map. Image courtesy of the North Carolina Department of Environmental Quality.
Screenshot of the North Carolina Oceanfront Erosion & Accretion Rates Map. Image courtesy of the North Carolina Department of Environmental Quality.

Tip for Success:

  1. As of October 2016, only 42 communities are earning credit for this element. Most of these communities are located in states like North Carolina and Florida, which have state-run erosion data maintenance programs. Communities in these states should reach out to their NFIP Coordinator or Floodplain Manager for more information on state erosion data maintenance.

Co-Benefits Associated with this Element: When communities’ erosion data are updated on a regular basis, they can make informed decisions about what areas to preserve and what areas to develop. In addition, they can ensure that their regulatory maps and erosion rates are up to date.