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Results 31 - 60 of 109 listed alphabetically [list by similarity]
Long Island Sound [More info]
Long Island Sound interactive map with GIS datasets and sonar imagery.
Louisiana continental slope [More info]
Louisiana continental slope interactive map with GIS datasets and sonar imagery.
Map accuracy standards [More info]
Information on national map accuracy standards and how the USGS maintains accuracy.
Marine Realms Information Bank: topic search, geographic search [More info]
Searching by geography and topics to locate scientific information about oceans, lakes, marine environments and coastal environments.
Mineral resources online spatial data [More info]
Website for geospatial data on mineral resources of the U.S. or the world that users can locate by geographic area, view, and download.
Mississippi Fan internet map [More info]
Mississippi River alluvial fan interactive map with GIS data and imagery depicting core sites, depositional and channel interpretation, Gloria and SeaMarc datasets.
Missouri River streamflow-gaging station, Bismarck, North Dakota [More info]
Description of the North Dakota stream-gaging program using a Missouri River streamflow-gaging station in Bismarck, North Dakota as an example explaining how and why the USGS collects stream data with photos and directions for visiting the station.
Most recent updates for U.S. volcanoes [More info]
Short descriptions of recent volcanic activity in the US.
National Aerial Photography Program (NAPP)- Ordering Aerial Photography [More info]
Enables locating and ordering aerial photography produced under the National Aerial Photography Program (NAPP)from the EROS data center with links to product description, prices, search & order, custom enlargements and certification.
National Assessment of Coastal Change Hazards [More info]
The National Assessment of Coastal Change Hazards is a multi-year undertaking to identify and quantify the vulnerability of U.S. shorelines to coastal change hazards such as the effects of severe storms, sea-level rise, and shoreline erosion and retreat.
National Assessment of Shoreline Change Project [More info]
The Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) is conducting an analysis of historical shoreline changes along open-ocean sandy shores of the conterminous United States and parts of Alaska and Hawaii.
National Atlas Map Maker - Map layers [More info]
Links to hundreds of map layers of geospatial information listed by subjects for use with the National Atlas Map Maker to assemble, view, and print customized maps using one or more of the layers.
National Coal Resources Data System - US Coal Quality Database [More info]
Searchable database, the COALQUAL database, presented here and in the USGS Open-file Report 97-134, is a subset of samples contained in the NCRDS (National Coal Resources Data System) database, and contains coal quality data on each sample.
National Geologic Map Database Catalog [More info]
Search tool for locating print and online U.S. geologic maps by area, title, author, etc.
National Geologic Map Database Geologic Names Lexicon GEOLEX [More info]
Search tool for locating lithologic and geochronologic unit names for geologic studies.
National High Altitude Photography (NHAP) [More info]
Ordering and descriptive information on photography from the National High Altitude Photography (NHAP) program 1980-1989 to acquire aerial photographs of the 48 conterminous states with links to searching on EarthExplorer.
National Hydrography Dataset (NHD) [More info]
Main page for National Hydrography Dataset (NHD), a comprehensive set of digital spatial data about surface water features, with links to references, data, software tools, applications, tutorials, technical support, and data maintenance.
National Landslide Information Center [More info]
National Landslide Information Center links to general information, teacher/student information, recent landslide events, state and local information, current projects, fire-related landslides, and images and publications on landslides.
National Mapping Program standards [More info]
Links to standards prepared under the National Mapping Program to produce and maintain top quality mapping and geospatial data products. Documents may be viewed and downloaded in PDF and HTML formats with links to related information.
National Oil and Gas Assessment [More info]
Links to oil and gas assessment maps of major basins in the United States and to related publications, and products.
National Petroleum Reserve Alaska Legacy Data Archive [More info]
Access is provided to seismic data, image files of seismic data, well logs, and cores of petroleum reserves in Alaska from the National Petroleum Reserve, Alaska, and (NPRA) Legacy Data Archive.
National Satellite Land Remote Sensing Data Archive [More info]
USGS Archive for preservation and access for satellite remote sensing data and imagery (Landsat and AVHRR). Links to locating and ordering imagery, international collaborators, advisory committee, and Earthshots (satellite photos.).
National Water Information System (NWISWeb) data for the Nation [More info]
NWISWeb homepage for the National Water Information System providing access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, and Puerto Rico.
National Water-Quality Assessment data warehouse [More info]
Data warehouse for national water quality program with links to chemical, biological, and physical data for water, sediment and animal tissues, nutrient, pesticide, and VOC levels, streamflow, and ground water levels from national study units.
National water conditions [More info]
Historical maps and animations of maps for monthly and annual streamflow conditions by water year showing generalized contour patterns of streamflow conditions. Maps are for the United States, Canada, and Puerto Rico.
Nationalatlas.gov - National Atlas of the United States [More info]
Portal to general information on the National Atlas of the United States with access for producing specialized maps and links to thematic maps including interactive maps, multimedia maps, map layers data warehouse, wall maps, and printable maps.
Newsroom [More info]
Primary webpage for current news releases and aids for reporters of the news media with links to current news stories, news leads, photos, videos, background material, and contacts.
Office of Water Quality, Branch of Quality Systems [More info]
Branch of Quality Systems monitors the consistent collection and reporting of water-quality data with documentation of field and laboratory methods and proficiency testing. Links to standard reference samples and quality assurance standards.
PDF Opening the Landsat Archive [More info]
All Landsat images within the EROS Center archive--a 37-year record of Earth's surface--are available free of charge via the web, including newly acquired Landsat 7 multispectral images.
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.
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