NIDIS Drought Data Download and Services
Drought.gov is the public face of the National Integrated Drought Information System (NIDIS) and serves as a clearinghouse for drought products, forecasts, services, and information at the county, state, regional, national and global scales. Modern advances in web capabilities, GIS and data management are driving a new generation of approaches to visualizations. Drought.gov is utilizing these new approaches to better communicate Drought information and to prioritize usability, accessibility and performance. These new approaches have been made available to the public, and include a variety of drought-related spatial and non-spatial products. Drought.gov plans to expand on these products in the future and will continuously update this informational page to reflect these changes.
Currently, there are two online locations and methods that can be used to access these data products: the Drought.gov Data Download website and the Drought.gov ArcGIS Server. The data download website provides access to data products and boundary files in GeoJSON and TopoJSON formats that enable accurate and efficient online visualizations in tools such as D3, Leaflet, OpenLayers and ArcGIS Online. These products are organized and vary by their spatial extent as seen in the list below. The ArcGIS REST server provides the public with access to spatial files and data products formatted for Geographic Information Systems (GIS) software that can be incorporated into ESRI ArcGIS Online, Google Earth, ArcMap for Desktop, and more. Please refer to the list below for more information about these products.
Drought.gov/NCEI ArcGIS REST Services
Below is a list of data products available via the NCEI/NIDIS ArcGIS REST server:
- Drought Early Warning System (DEWS) Region Boundary Files – (REST)
- Climate Division, State, Region and U.S. Drought Indicies (Palmer and SPI) – (REST)
- Soil Climate Analysis Network (SCAN) Soil Moisture Data – (REST)
- North American Drought Monitor – (REST)
Drought.gov Data Download
Below is a list of the Version 1 (v1) available products from Drought.gov’s Data Download:*GeoJSON and TopoJSON file extensions are “.geojson” and “.json” respectively.
- County Products
- State Products
- United States (U.S.)
- U.S. Boundary Files – GeoJSON & TopoJSON Format U.S. Files
- U.S. Data Products
- North American Products
- Global Products
- Global Boundary Files – GeoJSON & TopoJSON Format Global Files
- Global Data Products
Data Download – GeoJSON and TopoJSON formats:To more effectively and efficiently present the NIDIS data products on the Drought.Gov website, these products were converted to two different file formats: GeoJSON and TopoJSON. The GeoJSON file format allows for encoding a wide variety of geographic data structures. The TopoJSON file format is an extension of GeoJSON that encodes topology, and allows for the creation of a smaller version of the same GeoJSON file by reducing duplicated boundaries. Many of these data products tailored for a larger spatial extent (i.e., United States, North American, and Global spatial extents) have also been simplified by reducing the complexity of each polygon to reduce their file size and decrease load time on Drought.gov. All of these files can be viewed and edited with a text editor, desktop GIS or online GIS or mapping tools. These formats have allowed the Drought.gov web team to more efficiently utilize spatial data and incorporate dynamic mapping within the website.