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National Information

Section 305(b) of the Clean Water Act (CWA) requires States to submit biennial water quality assessments to EPA. The reports are due April 1 of each reporting year (e.g., April1, 2008). The next State submissions are due April 1, 2010. These reports evaluate the designated uses of waters and whether a particular use is fully supported, partially supported or not supported. Since 2002, EPA has encouraged states to submit their 305(b) reports as part of an Integrated Report, combining 305(b) information with the CWA Section 303(d) list of impaired waters (waters not meeting applicable Water Quality Standards).

EPA's mid-Atlantic Region has compiled the individual state 305(b) data into summary tables by reporting cycle (2002, 2004, 2006 and 2008) and these tables show results based on water body type and designated use. In addition, a separate table contains summary information on trends in assessment reporting from 1998 through 2008.

In addition, EPA has collaborated with states, tribal nations, and other agencies to create the Wadeable Streams Assessment, the first nationally consistent and statistically valid study of the nation’s wadeable streams. Eighty-seven of the sites included in the assessment are located in the mid-Atlantic Region.

Should you have problems in accessing the data in the PDF files below, please contact Larry Merrill (merrill.larry@epa.gov), 215-814-5452.

2008 Use Determinations
Trends in Rivers/Streams from 1998-2008
Monitoring News

EPA Releases National Lakes Assessment — The National Lakes Assessment is the first-ever baseline study of the condition of the nationís lakes, and is designed to provide statistically valid regional and national estimates of the condition of U.S. lakes. It uses a probability-based sampling design to represent the condition of all lakes in similar regions sharing similar ecological characteristics. The draft study, which rated the condition of 56 percent of the lakes in the United States as good and the remainder as fair or poor, marked the first time EPA and its partners used a nationally consistent approach to survey the ecological and water quality of lakes. A total of 1,028 lakes were randomly sampled during 2007 by states, tribes and EPA. Click to read more about the survey, http://www.epa.gov/lakessurvey.

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