Record Display for the EPA National Library Catalog


Main Title Geographic Information System Documentation of Watershed Data for Direct/Delayed Response Project. Southern Blue Ridge Province Database.
Author Mortenson, D. C. ;
CORP Author NSI Technology Services Corp., Corvallis, OR.;Corvallis Environmental Research Lab., OR.
Publisher Mar 89
Year Published 1989
Report Number EPA/600/3-89/002;
Stock Number PB89-219539
Additional Subjects Information systems ; Watersheds ; Surface waters ; Mapping ; Streams ; Quality control ; Performance evaluation ; Guidelines ; Standards ; Regional analysis ; Soils ; Land use ; Geology ; North Carolina ; South Carolina ; Alabama ; Tennessee ; Acid rain ; Water pollution sampling ; Direct/Delayed Response Project ; South Blue Ridge Region
Library Call Number Additional Info Location Last
NTIS  PB89-219539 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 34p
The Direct/Delayed Response Project (DDRP) was designed by the U.S. Environmental Protection Agency within the National Acid Precipitation Assessment Program to predict the long-term response of watersheds and surface waters to acidic deposition. The purpose of the DDRP is to investigate and distinguish the time scales over which surface water systems might change chemically under varying levels of acidic deposition. The DDRP is examining a sub-set of watersheds sampled as part of the National Surface Water Survey. In the Southern Blue Ridge Province Region of the United States, 35 watersheds are under study. The DDRP required detailed watershed information on those characteristics thought important relative to the effects of acid deposition. The information was then mapped, then entered into a Geographic Information System (GIS). The document discuss protocols, guidelines, and standards used to complete GIS entry of the mapping data, and quality control procedures were used to ensure accuracy and consistency.