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The U.S. EPA is embarking on a three-year study to determine the state of America’s lakes. The “Survey of the Nation’s Lakes” is the first-ever attempt to assess real-world conditions by studying 909 lakes, ponds and reservoirs whose profiles are representative of all lakes in the U.S.
The survey, a joint effort among EPA, the states and some tribes, will:
“America’s lakes shape the landscape and are at the heart of our natural heritage, health and beauty,” said EPA Assistant Administrator for Water Benjamin H. Grumbles. “EPA’s national state-of-the-lakes study will measure lake health, map priorities, and motivate grass-roots stewardship, a cornerstone of the President’s Cooperative Conservation agenda.”
Survey samples will be taken from natural and human-made freshwater lakes, ponds and reservoirs next summer. Bodies of water included in the survey will be a minimum area of 10 acres in area and at least 39 in. deep.
The last time EPA catalogued the status of lakes was 1972 to 1976, when 815 lakes were evaluated nationwide. The new study will resample 113 lakes from the earlier survey for comparison.
Researchers will look at water chemical quality, turbidity, color, conditions of shoreline habitat and pathogen indicators. Other conditions will also be measured. Researchers will use the same sampling techniques among all lakes to provide uniform results and permit comparisons across the country.
This study is part of a larger EPA effort to assess coastal waters, rivers and wetlands. A similar survey, for wadeable streams, was completed earlier this year. All of the surveys will be repeated to analyze the success of efforts to manage and improve overall water quality. The report on the lakes survey will be released in 2009.