SOW-UrbanFlooding-NRC_for_FBO.docx

Statement of Work 7/14/2016

Introduction Urban flooding can be defined as the inundation of property in a built environment, particularly in more densely populated areas, caused by rain falling on increased amounts of impervious surface and overwhelming the capacity of drainage systems. The term “urban flooding” in this study excludes flooding in undeveloped or agricultural areas. It includes:

1. situations in which stormwater enters buildings through

a. windows, doors, or other openings;

b. water backup through pipes and drains;

c. seepage through walls and floors;

2. the accumulation of water on property or public rights-of-way; and

3. the overflow from water bodies, such as rivers and lakes.

Task The primary focus of the study should be urban areas outside of special flood hazard areas as defined by FEMA. In conducting the study, the National Academy shall review and evaluate the latest available research, laws, regulations, policies, best practices, procedures, and institutional knowledge regarding urban flooding. The study should include:

A. The trends in frequency and severity, prevalence and costs associated with urban flooding across the United States with a focus on the largest metropolitan areas. (Consequence assessment) B. The adequacy of existing federally provided flood risk information and methods and products that could be used to identify, map, or otherwise characterize the risk associated with urban flooding. (Risk identification, characterization, and communication) C. The causes of urban flooding and its increase over the past 20 years including the impacts of climate change, urbanization and ageing, condition, and adequacy of stormwater infrastructure. (Risk drivers) D. The most cost-effective strategies, practices, technologies, policies, standards, or rules used to reduce the impacts of urban flooding. (Risk reduction/Risk management) E. The most sustainable and effective methods for funding flood risk and flood damage reduction at all levels of government. (cost-benefit analysis) F. The relevance of the National Flood Insurance Program to urban flooding areas outside traditional flood plains, and strategies for improving compliance, broadening coverage, and increasing participation under the program. (Role of NFIP)

Deliverables Upon completion of the study, NAS should submit to FEMA a report that includes the results of the above mentioned reviews and evaluations as well as pertinent recommendations. A high level quarterly status report that includes a brief summary of ongoing activities should also be provided prior to the date of the report.