With approximately 40% of the world's population living within 100 kilometers (km) of the coast, floods affect more people worldwide than any other type of natural disaster. The number and frequency of flooding events is increasing in part due to climate change with coastal and low-lying areas being particularly vulnerable due to years of relative sea level increases and an increase in extreme weather events.
Discover Flood Data
Any place where rain falls is susceptible to flooding. Measuring rainfall helps advance our understanding of Earth's water cycle, improving forecasts of extreme events such as flooding.
- Discover Rain Data in Earthdata Search
- Rain Data at NASA's Goddard Earth Sciences Data and Information Services Center (GES DISC)
- Rain Data at NASA's Global Hydrology Resources Center Distributed Active Archive Center (GHRC DAAC)
- Visualize Rain Data in Worldview
- Data Access and Visualization of Model Data at GES DISC
- NetCD-what? An Ecologist’s Guide to Working with Daymet and other NetCDF-formatted Data
- Tropical Rainfall Measuring Mission (TRMM) and Global Precipitation Measurement (GPM) Precipitation Products and Services at GES DISC
- Daymet Single Pixel Data Extraction — Web Services
- How to Import MERRA Surface Product Data into ArcGIS
- How to Obtain Data for Conducting Hurricane Case Study
Snow Cover and Snow Water Equivalent
Both seasonal and long-term changes to snow cover can impact the amount of water flowing through watersheds, resulting in a water deficit or a water abundance. The amount of snow pack and timing of snow melt affects flood risk.
- Citizen Science on Snow
- Discover Snow Data in Earthdata Search
- Snow Data at NASA's National Snow and Ice Data Center DAAC (NSIDC DAAC)
- Visualize Snow Data in Worldview
Snow Water Equivalent (SWE)
- Let It Snow! Accessing and Analyzing Snow Data at NSIDC DAAC
- Discovering and Differentiating Data with NSIDC Search
Socioeconomic Flood-related Data
Socioeconomic datasets help with the assessment of the exposure and vulnerability of a community to a disaster. Exposure is the presence of people, ecosystems, and infrastructure in places that could be adversely affected by a disaster. Vulnerability is the propensity to be adversely affected by a disaster.
- Discover flood-related socioeconomic data in Earthdata Search
- Discover Global Man-made Impervious Surface (GMIS) data in Earthdata Search
- Visualize flood-related socioeconomic data in Worldview
- Flood-related data at NASA's Socioeconomic Data and Applications Center (SEDAC)
- Discover Population Data in Earthdata Search
- Visualize Population Data in Worldview
- Estimate Population in a User-Defined Area at SEDAC
- Population Data at SEDAC
- Gridded Population and Settlement Data: An Introduction to the POPGRID Data Collaborative
- Mapping Global Urbanization from Landsat Data and High-Resolution Reference Data
- Remote Sensing Derived Environmental Indicators for Decision Making
Remote sensing data can be used to identify the vulnerability, exposure, and flooding risk of communities as well as help mitigate the social and economic impacts. NASA Earth observations can help scientists, application-based users, and decision makers understand factors contributing to flood events, respond to events in near real-time, and map flood inundation and its impacts post-event. This toolkit is designed to support this research by providing easy access to data and other resources.
Understanding soil moisture aids in improving weather forecasts and predicting floods. Soil moisture controls the amount of water that can infiltrate into the ground, replenishing our aquifers or contributing to excess runoff.
- Discover Soil Moisture Data in Earthdata Search
- Soil Moisture Data at GES DISC
- Soil Moisture Data at NSIDC DAAC
- Soils Data at NASA's Oak Ridge National Laboratory DAAC (ORNL DAAC)
- Visualize Soil Moisture Data in Worldview
Knowing local topography is essential for disaster managers and emergency management professionals seeking to assess an area's risk level; knowing the height at which communities sit in relation to flood waters determines the exposure.
- Discover Topography Data in Earthdata Search
- Visualize Topography in Worldview
- Land Surface Topography/Elevation Data at NASA's Land Processes DAAC (LP DAAC)
- Looking to Fill the Voids? NASADEM is Here!
- Working with Land Remote Sensing Data in a GIS Environment
Understanding and mapping flood inundation is critical to assessing the scope of the disaster, where the damage is greatest, and therefore where to respond with relief efforts.
Land Surface Reflectance
- Discover Land Surface Reflectance Data in Earthdata Search
- Visualize Land Surface Reflectance in Worldview
- Visualize MODIS Corrected Reflectance Bands 7-2-1 in Worldview
- Visualize VIIRS Corrected Reflectance Bands 11-I2-I1 in Worldview
- Surface Reflectance Data at LP DAAC
- Getting Started with VIIRS Surface Reflectance Data—All about Accessing the Data
- Getting Started with VIIRS Surface Reflectance Data—Using the Data
- Getting Started with NASA MODIS Version 6 Surface Reflectance Data—Accessing the Data
- Getting Started with NASA MODIS Version 6 Surface Reflectance Data—Using the Data
- Getting Started with NASA MODIS Version 6 Surface Reflectance Data—Interpreting Quality Information
Synthetic Aperture Radar (SAR)
About the Data
NASA provides data from a variety of sources including satellites, airborne campaigns, field campaigns, in situ instruments and model outputs. The Earth Observing System Data and Information System (EOSDIS) offers a wide variety of freely and openly available data that can be used to evaluate disaster-related events.
Dr. Emily Berndt uses NASA Earth science data to study how to improve short-term forecasts of high-impact weather.
Dr. Xiaofeng Li uses NASA Earth science data to study atmospheric and oceanic processes.
Dr. Pierre Kirstetter uses NASA Earth science data for improving our understanding of precipitation and flooding.
Dr. Brian Mapes uses NASA Earth science data to study large-scale weather and climate processes.
Read about how researchers are using NASA satellite, field campaign, and model data to study natural disasters, the impacts of these disasters, and ways to mitigate risk and exposure.
Published October 21, 2020
Page Last Updated: Nov 5, 2020 at 3:40 PM EST