||Estimating nutrient loadings of lakes from non-point sources /
Uttormark, Paul D. ;
Chapin, John D. ;
Green., Kenneth M.
||Wisconsin Univ., Madison. Water Resources Center.;National Environmental Research Center, Corvallis, Oreg.
|| [U.S. Environmental Protection Agency],
||EPA-660/3-74-020; EPA-R-801343; EPA-ROAP-21AJE-28
Water pollution ;
Urban areas ;
Forest land ;
Ground water ;
Inorganic phosphates ;
Inorganic nitrates ;
Surface water runoff ;
Chemical properties ;
Septic tanks ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||vi, 112 pages : illustrations ; 27 cm
Data describing nutrient contributions from non-point sources were compiled from the literature, converted to kg/ha/yr, and tabulated in a format convenient for estimating nutrient loadings of lakes. Contributing areas are subdivided according to general use categories, including agricultural, urban, forested, and wetland. Data describing nutrient transport by groundwater seepage and bulk precipitation are given along with data for nutrient contributions from manure handling, septic tanks, and agricultural fertilizers. Nutrient content of urban runoff was the highest; forested areas were lowest.
"EPA-660/3-74-020." "PB 238 355." "August 1974." Prepared for Office of Research and Monitoring, U.S. Environmental Protection Agency under program element 1BA031, Roap/Task 21 AJE 28, grant R-801343. Includes bibliographical references. Microfiche.