Record Display for the EPA National Library Catalog

RECORD NUMBER: 160 OF 516

OLS Field Name OLS Field Data
Main Title Field-to-Stream Transport of Agricultural Chemicals and Sediment in an Iowa Watershed. Part 2. Data Base for Model Testing (1979-1980).
Author Johnson, H. P. ; Baker, J. L. ;
CORP Author Iowa Agricultural and Home Economics Experiment Station, Ames.;Environmental Research Lab., Athens, GA.
Year Published 1984
Report Number EPA-R-806603; EPA-600/3-84-055;
Stock Number PB84-177419
Additional Subjects Sediment transport ; Water pollution ; Mathematical models ; Farms ; Drainage ; Pesticides ; Nutrients ; Corn plants ; Soybean plants ; Sediments ; Losses ; Pasture ; Fertilizers ; Runoff ; Stream flow ; Graphs(Charts) ; Tables(Data) ; Iowa ; Agricultural watersheds ; Nonpoint sources
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB84-177419 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 462p
Abstract
In a continuation of a previous project, data were collected on the field-to-stream transport of sediment, nutrients, and pesticides in an agricultural watershed. These data contribute to an improved qualitative understanding of the field-to-stream processes involved and provide a quantitative base for testing mathematical models that predict hydrology, erosion, and sediment and chemical transport. During the study reported here (1979-1980), data were collected for small corn, soybean and pasture fields; for two larger mixed-cover subwatersheds; and at three drainage stream sites. Rainfall was well above average in 1979 and slightly below normal in 1980. Flow from the watershed was roughly half subsurface flow and half runoff, with about half of the surface runoff being snowmelt.