Digital information in a format suitable for direct input to software that can analyze its meaning in the scientific, engineering, or business context for which the data were collected.
North Dakota River Basin map for current streamflow conditions [ More info] Links by geographic area in North Dakota or by gaging station number to hydrographs, downloadable data, and site description of streamflow stations.
Nutrients National Synthesis Project: nutrients in rivers, streams, and aquifers in the United States [ More info] This Nutrients National Synthesis Project site on the U.S. study of nutrients, especially nitrogen and phosphorus, as contaminants in high concentrations links to an overview, study team, featured reports, publications, and national datasets.
Oceanographic time series data [ More info] Oceanographic time-series data obtained from moored instruments, generally provided in NetCDF format.
Oklahoma Geographic Information Systems (GIS) data [ More info] Access to GIS geospatial datasets for Oklahoma and the United States for Geographic Information Systems (GIS) applications.
Pacific Seafloor Mapping Project [ More info] Homepage for the Pacific Sea floor Mapping Project with links to images, downloadable data, applications, fly-by movies, products, publications, and contacts for studies of San Francisco Bay, Puget Sound, Lake Tahoe, and other Pacific areas.
Pennsylvania downloadable spatial data (GIS data files) [ More info] Pennsylvania digital data for watershed boundaries, county geology, and flood mapping in Arc/Info format compressed with gzip utility for downloading plus links to other sources of data.
Pesticide National Synthesis Project: national assessment of pesticides in streams, rivers, and ground water of the United States [ More info] An assessment of pesticides in national water resources, with links to national reports, national statistics, national data, pesticide use, analytical strategy, and standards for the U.S.
Planetary GIS web server - PIGWAD (Planetary Interactive G.I.S.-on-the-Web Analyzable Database) [ More info] Planetary Interactive G.I.S.-on-the-Web Analyzable Database (PIGWALD), an interface to support and integrate Geographic Information Systems (GIS) graphical, statistical, and spatial relational tools for analyses of planetary datasets.
Preliminary geologic map of the Santa Barbara coastal plain area, Santa Barbara County, California [ More info] A geologic map of the Santa Barbara coastal plain region in PDF format with data in GIS format (ArcInfo export, shapefile, and TIFF)
Priority ecosystem studies initiative [ More info] Description of the priority ecosystems studies initiative with links to projects in Chesapeake Bay, Greater Yellowstone, Mojave Desert, Platte River, Salton Sea, San Francisco, and south Florida.
Alphabetical Index of Topics
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