Assessment of stream quality using biological indices at selected sites in the Big Elk and Octoraro Creek basins, Chester County, Pennsylvania, 1981-97
By: [Andrew G. Reif] ; in cooperation with the Chester County Water Resources Authority
Contributors: Chester County Water Resources Authority; Geological Survey (U.S.)
Series: USGS fact sheet -- FS-115-02; Fact sheet (Geological Survey (U.S.)) -- FS-02-115
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 -- Octoraro Creek (Pa. and Md.); Water quality biological assessment -- Big Elk Creek Watershed (Pa. and Md.)
Notes: Caption title

Shipping list no.: 2003-0098-P

"December 2002"--P. [1]

Includes bibliographical references (p. 4)