Assessment of stream quality using biological indices at selected sites in the Red Clay and White Clay Creek basins, Chester County, Pennsylvania, 1981-97
By: in cooperation with the Chester County Water Resources Authority
Contributors: Chester County Water Resources Authority; Geological Survey (U.S.)
Series: USGS fact sheet -- FS-118-02; Fact sheet (Geological Survey (U.S.)) -- FS-02-118
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey
Published: 2002
Place of publication: [Reston, Va.?
Language: eng
Subjects: Water quality biological assessment -- Pennsylvania -- Chester County; Water quality biological assessment -- White Clay Creek Watershed (Pa. and Del.)
Notes: Caption title

Shipping list no.: 2003-0091-P

"December 2002"--P. [1]

Includes bibliographical references (p. 4)

Also available via Internet from the USGS web site. Address as of 3/7/03: http://pa.water.usgs.gov/reports/fs118-02.pdf; current access is available via PURL