USGS: Science Topics: lakes

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Lakes

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.]

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Great Lakes Beach Health Initiative [More info]: Research and development efforts to improve our ability to provide scientific information needed by local beach managers faced with questions about environmental quality and possible beach closure or resource usage.
Great Lakes issues [More info]: Water resources problems of the Great Lakes including water use, bacterial contamination on beaches, status of water resources, and ground water flow.
Great Lakes Science Center [More info]: Site for Great Lakes Science Center, Ann Arbor, which provides information about biological resources in the Great Lakes Basin. Links to personnel, publications, data, library, facilities, research vessels, Great Lakes issues, and research.
Response of lake chemistry to atmospheric deposition and climate in selected Class I wilderness areas in the western United States, 1993-2009 [More info]: Sulfate deposition to high-elevation areas has decreased here as a result of reductions in SO2 emissions. Nitrate deposition did not change, whereas ammonium deposition increased, particularly at sites near urban and agricultural areas.
Studies and trends of selected inland lakes of the Great Lakes Cluster National Parks [More info]: Report on the status of the biota and ecological factors of the inland lakes of the Great Lakes Cluster Parks: Indiana Dunes, Sleeping Bear Dunes,and Pictured Rocks National Lakeshores and Isle Royale and Voyageurs National Parks. (PDF file, 321 p.)
The carbon cycle in lakes of the Upper Mississippi Basin [More info]: Summary of part of the USGS interdivisional Mississippi Basin Carbon project that will study the changes in climate and the environment through carbon cycle changes recorded in lake sediments in the Upper Mississippi River Basin.
The Cottonwood Lake study area, a long-term wetland ecosystem monitoring site [More info]: Here we study effects of climate and groundwater on surface-water levels, the hydrological effects on wetland water chemistry, and the combined effects of climate, hydrology, and water chemistry on plant and animal communities of prairie pothole wetlands.
Two decades of research at Crater Lake [More info]: Research brief for resource managers on the ecology of Crater Lake.
Understanding beach health throughout the Great Lakes -- Continuing research [More info]: Outlines tactical problems that make it difficult for beach managers to use scientific information to make beach closure and advisory decisions. Explains methodologies we are using to address those problems and better prepare local decision makers.
Understanding beach health throughout the Great Lakes-Entering a new era of investigations [More info]: People who manage recreational areas need better, more timely estimates of the likelihood that the beach and lake waters will be hazardous to human health, and which factors cause those hazards.

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