||Classification of Environmental Hydrologic Behaviors in the Northeastern United States.
Kim, K. ;
Hawkins, R. H. ;
||Wisconsin Univ.-Madison. Environmental Remote Sensing Center. ;Arizona Univ., Tucson. School of Renewable Natural Resources.;Corvallis Environmental Research Lab., OR.
Base flow ;
Storm water runoff ;
Stream flow ;
Environmental monitoring ;
Cluster analysis ;
Computer programming ;
Northeast Region(United States) ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
Environmental response to acidic deposition results from movement of water through the ecosystem. As a part of the environmental studies for acidic deposition sponsored by the U.S. Environmental Protection Agency (EPA), hydrologic classification based on regional baseflow properties was done. To obtain the amount of baseflow, a flow separation method was developed based on the division of streamflows into baseflow and other runoff sources. Because of the differences in the flow paths and exposure duration, the two components were assumed to be associated with distinct geochemical responses. Individual annual hydrographs were analyzed using 31 separation slopes to determine the amount of baseflow. A total of 1575 streamflow stations in the Northeastern U.S. were analyzed through the access of a long-term daily stream flow data base. An interactive computer program was developed to obtain baseflow properties and other hydrologic characteristics of each station.