Record Display for the EPA National Library Catalog


Main Title Non-Point Source Studies on Chesapeake Bay. II. Nutrients in Land Runoff from Rhode River Watersheds in 1975 and 1976.
Author Correll, David L. ; Friebele, Elaine S. ; Miklas., Joseph ;
CORP Author Smithsonian Institution, Edgewater, Md. Chesapeake Bay Center for Environmental Studies. ;Chesapeake Research Consortium, Inc., Baltimore, Md.;National Science Foundation, Washington, D.C. Research Applied to National Needs.;Environmental Protection Agency, Washington, D.C.
Year Published 1977
Report Number NSF-ENV76-22045 ;EPA-R-804536-01; NSF/RA-770381;
Stock Number PB-276 861
Additional Subjects Surface water runoff ; Nutrients ; Land use ; Rhode River ; Water pollution ; Concentration(Composition) ; Nitrogen ; Phosphorus ; Mathematical prediction ; Precipitation(Meteorology) ; Watersheds ; Regression analysis ; Water flow ; Periodic variations ; Ammonia ; Streamflow ; Seasonal variations ; Tables(Data) ; Maryland ; Chesapeake Bay ; Nonpoint sources ; Organic loading
Library Call Number Additional Info Location Last
NTIS  PB-276 861 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 418p
Part II of this project attempts to: (1) Measure the forms and concentrations of nitrogen and phosphorus in precipitation and land runoff for a series of Rhode River sub-watershed basins; (2) relate these data to water discharge in order to obtain area yield loading rates; (3) assess how these area yield loading rates vary seasonally and yearly; and (4) relate area yield loadings to the land use composition of the test basins and to land use practices in the basins. This study concludes that the annual average concentrations of total nitrogen and of total phosphorus in land runoff can be predicted by a simple statistical equation relating these concentrations to the percent of watershed in agricultural plus residential uses. Also, it was found that the same equations were equally valid for the whole of the eastern and midwestern United States if soil pH was included as a parameter. A close relationship between land use and runoff composition is documented. The appendix, forming the bulk of the report, provides tables of nutrient concentrations in precipitation and in runoff waters from seven test basins.