Full Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Black Hawk Lake, Sac County, Iowa.
CORP Author Pacific Northwest Environmental Research Lab., Corvallis, Oreg.;Iowa Dept. of Environmental Quality, Des Moines.;Iowa National Guard, Des Moines.;National Environmental Research Center, Las Vegas, Nev.
Year Published 1976
Report Number Working Paper-496;
Stock Number PB-258 247
Additional Subjects Water pollution ; Black Hawk Lake ; Surveys ; Inorganic phosphates ; Inorganic nitrates ; Bioassay ; Primary biological productivity ; Chemical properties ; Water quality ; Drainage ; Nutrients ; Sources ; Tables(Data) ; Iowa ; Eutrophication ; Water quality data ; Sac County(Iowa)
Library Call Number Additional Info Location Last
NTIS  PB-258 247 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 35p
Abstract Annual total phosphorus and total nitrogen loadings to the lake were estimated and subdivided according to either point or non-point source origin. An assessment of the lake's trophic condition and limiting nutrient is also provided. All data collected by the U.S.E.P.A. National Eutrophication Survey during the one year study of the lake and its tributaries are included in the report.
Supplementary Notes Prepared in cooperation with National Environmental Research Center, Las Vegas, Nev., Iowa Dept. of Environmental Quality, Des Moines, and Iowa National Guard, Des Moines.
NTIS Title Notes Final rept. 1974.
PUB Date Free Form Aug 76
Category Codes 13B; 8H; 68D
NTIS Prices PC A03/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326629885
Origin NTIS
Type CAT