Greauxing Resilience at Home — Mecklenburg County, North Carolina: Charlotte-Mecklenburg Storm Water Services, Risk Assessment/Risk Reduction (RARR) Tool

Charlotte-Mecklenburg Storm Water Services (CMSWS) is a joint municipal–county stormwater utility that manages and maintains the regulated floodplains within Mecklenburg County, North Carolina, including the City of Charlotte. CMSWS has developed a system for assessing community flood risk through the Mecklenburg County Risk Assessment/Risk Reduction (RARR) Tool for comprehensive mapping, impact analysis, and county-wide floodplain management. This map-based application allows the agency to collect and analyze flood risk data to help identify and reduce flood risk at the parcel level and regionally. 

RARR is a data-driven framework and set of tools that dynamically assess, evaluate, and ultimately prioritize flood mitigation strategies. The flood risk analysis processes supported by the RARR tool, along with the resulting solutions that CMSWS offers as described in this case study and a companion report, can guide other local jurisdictions in flood resilience planning, and promote climate adaptive policies.


This case study is one of 24 case studies featured in a report written by the Georgetown Climate Center, Greauxing Resilience at Home: A Collection of Lessons and Case Studies from Louisiana and Beyond. These case studies describe best and emerging practices, tools, and examples from Louisiana and other U.S. jurisdictions to make progress on the complex and interrelated challenges of housing, flooding, and resilience. These case studies are intended to provide transferable lessons and ideas for regional and local governments addressing housing and mitigating flood risk as integrated parts of comprehensive community resilience strategies. Collectively, these case studies present a suite, although not an exhaustive list of tools and approaches that can be used to facilitate any of these efforts.

For additional case studies and more information about this work, also see Greauxing Resilience at Home: A Regional Vision.

Publication Date: June 16, 2022

Related Organizations:

Related Resources:

Related Toolkits:


Resource Category:

Resource Types:

  • Best practice
  • Case study
  • Mapping tool
  • Tool (general)
  • Project

States Affected:


Go To Resource