Inundation Analysis Tool

Tool Overview: 

The Inundation Analysis Tool is a web-based tool that analyzes how frequently and for how long high tide events have historically occurred, allowing users to better understand saltwater inundation and flooding trends for certain elevations and locations. Users select the site (must be a NOAA CO-OPS tide station), time period of interest, and the elevation for inundation pattern analysis (e.g., mean high water, mean tide level).

Flood Resilience: A Basic Guide for Water and Wastewater Utilities

Tool Overview: 

Flood Resilience: A Basic Guide for Water and Wastewater Utilities is an interactive PDF that can guide water utility managers through a flood risk reduction planning process. This digital resource, complete with worksheets, videos, and examples, takes managers through a four-step process to evaluate and enhance flood resilience of utility infrastructure and facilities. Steps include: identifying flood threats, evaluating vulnerable utility infrastructure and consequences of flooding, evaluating flood mitigation options, and developing a flood mitigation implementation plan.

Flood Inundation Maps

Tool Overview: 

The NWS Flood Inundation Map is an online tool that identifies the extent and severity of flood risk for a given location. Users select from a variety of national river gauges to view flood risk at a specific location. For a given area, users can explore and map three different types of flood data: inundation, flood categories, and current flood forecast.

Flood Inundation Mapper

Tool Overview: 

The USGS Flood Inundation Mapper is an online flood mapping tool. Once a community develops a flood inundation map library through a collaborative effort with USGS, inundation maps are uploaded to the web-based mapper for broader viewing and access. Users can select a specific location and explore several different data sets, including current stream conditions, the estimated extent of historic flood events, and theoretical flooding scenarios.

Coastal Flood Exposure Mapper

Tool Overview: 

The Coastal Flood Exposure Mapper helps communities understand their risks and vulnerability to coastal flooding. The mapper was first developed following Hurricane Sandy to provide a tool to show areas susceptible to coastal flooding, storm surge, and inundation, and to inform communities and local authorities about the risks their communities face. Users are able to explore maps that show how natural resources, communities, and infrastructure and development will be exposed to coastal flooding hazards.

Coastal County Snapshots

Tool Overview: 

Coastal County Snapshots is an online tool that produces user-friendly reports identifying and describing three categories of coastal hazards and change — flooding risk, wetland impacts, and ocean jobs impact — for selected coastal counties in the United States. Users select a coastal county, and the tool generates reports for the three categories identifying and describing changes that have occurred (e.g., changes in land cover, job trends) and important sectoral information (e.g., amount of coastal infrastructure at risk from flooding, how wetlands can be used to reduce flood impacts).

Tool Description: 

Land managers, natural resource managers, local authorities, planners, engineers, scientists, community members

Advanced Hydrologic Prediction Service

Tool Overview: 

The Advanced Hydrologic Prediction Service (AHPS) provides a variety of forecasts from the National Weather Service regarding potential magnitude and uncertainty of flood and drought events. The AHPS offers hydrologic forecasts for close to 4,000 locations throughout the United States, and forecasts can be produced from hours to months in advance. The tool mainly draws upon data from the USGS National Streamflow Information Program (, a national network of stream gauges.

Integrating Climate Risks into Local Planning in Alameda County, California


Alameda County, California CA
United States
37° 45' 53.9892" N, 122° 13' 20.9532" W
California US
Four Twenty Seven

Cities across the United States face the challenge of integrating climate change considerations into their planning. Climate data is complex and fragmented, and often presented in a format and scale that are not aligned with planners’ needs. To support the integration of climate change adaptation into relevant plans such as local hazard mitigation plans, Four Twenty Seven, a California-based climate risk consulting firm, worked with the Alameda County waste authority to develop:

Design for Future Climate: Opportunities for Adaptation in the Built Environment


The Earth’s climate is changing – wetter winters and drier summers will affect existing buildings and alter the requirements of new ones. Whatever the cause of climate change, we will need to adapt our buildings so that they can cope with higher temperatures, more extreme weather and changes in rainfall.

The Technology Strategy Board of Innovate UK has developed the report 'Design for Future Climate: Opportunities for adaptation in the built environment' in order to assist the construction sector to construct buildings that are energy efficient and resilient towards flooding, heat and drought. The report describes the main climate change impacts on buildings and demonstrates studies, projects and initiatives on climate proof building designs.

The report concludes that the construction industry is requesting government to develop a coherent framework to enable design teams to develop and test new and holistic adaptation strategies.

Climate Change in Point Hope, Alaska: Strategies for Community Health

On a narrow promontory extending far out into the Chukchi Sea, the village of Point Hope enjoys one of the nest locations in Alaska for the harvest of subsistence resources, including sh, marine mammals, birds and caribou. This amazing place has allowed the Inupiat of Point Hope to ourish for centuries, and it is one of the oldest continuously occupied communities in Alaska. But it is also one of the most exposed, vulnerable to the full force of coastal storms and the constant shaping of the land by the wind and the sea. Shore erosion and the risk of ooding has forced relocation in the past. Today with the added pressure of climate change, Point Hope continues its struggle with increased urgency; against erosion and against other new emerging challenges to the community, the culture, and to public health.

Three issues were identified that are of special public health concern: first, the permafrost that cools traditional underground food storage cellars is thawing, and there are currently no community alternatives for storage of whale meat and blubber. Secondly, warming is contributing to changes in 7 Mile Lake, the community drinking water source. Temperature in uenced blooms of organic material have clogged water lters, adversely affecting water treatment. Thirdly, the community is increasingly vulnerable to flooding, due to storm intensity, erosion and late freeze up. The airstrip and 7 Mile road are also vulnerable. Emergency planning should continue to address these vulnerabilities, encourage early warning systems for storm events and ensure that evacuation routes and adequate shelter is available in a safe location.