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State Monitoring Data

Mid-Atlantic Water Monitoring Quick Finder

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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

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