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Unified Interior Regions

The USGS researches, monitors, models and forecasts the effects of such change on the Nation's resources. The resulting information and products help policymakers, natural resource managers, and the public make informed decisions about the management of resources on which they depend.

    • Region 1: North Atlantic-Appalachian

      We conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens and wildlife throughout the states of Connecticut, Delaware, Kentucky, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, as well as Washington D.C.

    • Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands)

      We conduct impartial, multi- and interdisciplinary research and monitoring to address a broad range of natural-resource issues that affect the quality of life of citizens and landscapes in the Southeastern United States and the Caribbean region.

    • Region 3: Great Lakes

      Welcome to Region 3! Our Region includes the states of Minnesota, Wisconsin, Michigan, Illinois, Indiana, and Ohio. We conduct science to inform resource managers on issues such as aquatic invasive species, water quality and availability, wildlife disease, and restoration of fish/wildlife and their habitats.

    • Region 4: Mississippi Basin

      Welcome to the Mississippi Basin Region! Our streamgage network is used to monitor and assess water resources across the region. Other research focuses on fisheries and aquatic ecosystems, midcontinental plant/animal species, invasive species, wildlife disease, and energy and mining.

    • Region 5: Missouri Basin

      Welcome to Region 5! Our Region includes Montana, North Dakota, South Dakota, Nebraska, and Kansas. We conduct science to inform resource managers on issues such as invasive species, water quality/quantity, flood response, oil and gas, and restoration of fish/wildlife and their habitats.

    • Region 6: Arkansas-Rio Grande-Texas-Gulf

      We conduct impartial, multi- and interdisciplinary research and monitoring to address a broad range of scienctific issues that affect the Arkansas-Rio Grande-Texas-Gulf Region.

    • Region 7: Upper Colorado Basin

      U.S. Geological Survey (USGS) Region 7: Upper Colorado Basin includes the States of Colorado, New Mexico, Utah, and Wyoming. USGS Science Centers in the Region conduct interdisciplinary research and monitoring related to natural resources, ecology, climate, and natural hazards. Data, analyses, and tools developed by USGS staff help stakeholders to make sustainable management decisions.

    • Region 8: Lower Colorado Basin

      The Lower Colorado Basin includes Arizona, southern Nevada, and southern California. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions. Our scientists do a broad array of research and technical assistance throughout the U.S. and across the globe.

    • Region 9: Columbia-Pacific Northwest

      We conduct impartial, multi- and interdisciplinary research and monitoring on natural-resource issues that impact the quality of life of the citizens of Idaho, Oregon, Washington and western Montana.

    • Region 10: California-Great Basin

      The California-Great Basin includes California, Nevada, and part of Oregon. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions. Our scientists do a broad array of research and technical assistance throughout the U.S. and across the globe.

    • Region 11: Alaska

      USGS in Alaska conducts science for decision-making in five major areas: natural hazards; energy & minerals; water quality, streamflow & ice; wildlife, fish & habitat; and geospatial mapping. The Alaska Regional Office provides management and strategic coordination among the Alaska Science Center, the Volcano Science Center, & other partners operating in AK.

    • Region 12: Pacific Islands (American Samoa, Hawaii, Guam, Commonwealth of the Northern Mariana Islands)

      We conduct impartial, multi- and interdisciplinary research and monitoring on natural-resource issues that impact the quality of life of the citizens of Hawaii, American Samoa, Guam, and the Northern Marianas.