Natural inland bodies of standing water, generally of appreciable size, occupying a depression in the Earth's surface. [Adapted from Glossary of Geology, 4th ed.]
Constructed farm ponds represent significant breeding, rearing, and overwintering habitat for amphibians in the Driftless Area Ecoregion of Minnesota, Wisconsin, and Iowa. Links to fact sheet, brochure, annual reports, field manual, and final report.
Planned analysis of the sensitivity of groundwater levels to changes in air temperature and precipitation. Changes in groundwater recharge and discharge also will be correlated with other hydrologic indicators.
USGS water resources home page for Michigan with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, weather, water management, droughts, floods, and water quality.
Links to descriptions, publications, and photos of research projects in Michigan related to drinking water including source assessment, ground water availability, water resources, and contaminants in water.
Links to descriptions, maps, photos, and reports of projects related to studies of the effects of dams and flow regulation in watersheds altered by humans in the state of Michigan including Muskegon and Kalamazoo Rivers and the Seney refuge.
USGS water resources home page for Ohio with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, weather, water use, and water quality, plus district and publications information.
Maps and explanations of continuous real-time data collection methods and results, including water temperature, turbididty, specific conductance, dissolved oxygen, pH, and stream discharge values.
Geospatial hydrologic and reference data covering the upper Mississippi River, provided in formats appropriate to geographic information systems (GIS) and used in long-term resource monitoring of the area.
Links to grassland bird species with detailed descriptions and bibliographic database in *.zip files to download in ProCite 5, Rich Text Format or ASCII formats.
This updated global inventory reports on natural gas hydrate recovered or inferred from geophysical, geochemical, or geological evidence. Includes links to world location maps, inventories, references and posters. Also in PDF format files.