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Main Title Geographic information system documentation of watershed data for Direct/Delayed Response Project, northeast database /
Author Mortenson, Dorothy C.
CORP Author NSI Technology Services Corp., Corvallis, OR.;Corvallis Environmental Research Lab., OR.
Publisher Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1989
Report Number EPA/600/3-89/001
Stock Number PB89-222483
Subjects Watershed management--Northeastern States ; Geographic information systems
Additional Subjects Information systems ; Watersheds ; Surface waters ; Mapping ; Hydrology ; Quality control ; Performance evaluation ; Guidelines ; Standards ; Regional analyses ; Soils ; Lakes ; Land use ; Geology ; Northeast Region(United States) ; Acid rain ; Water pollution sampling ; Direct/Delayed Response Project ; US EPA
Library Call Number Additional Info Location Last
NTIS  PB89-222483 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19 pages : illustrations
Abstract 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 Northeast Region of the United States, 145 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 discusses protocols, guidelines, and standards used to complete GIS entry of the mapping data, and quality control procedures used to ensure accuracy and consistency.
Notes "EPA/600/3-89/001." "March 1989." Includes bibliographical references (page 19). Microfiche.
Place Published Corvallis, OR :
Supplementary Notes See also PB89-219539. Sponsored by Corvallis Environmental Research Lab., OR.
Corporate Au Added Ent Corvallis Environmental Research Laboratory.
PUB Date Free Form 1989.
Ti Tra Differently Direct/Delayed Response Project, northeast database. Northeast database.
NTIS Prices PC A03/MF A01
BIB Level m
Medium microform
Cataloging Source OCLC/T
Merged OCLC records 25514564
OCLC Time Stamp 20000913143344
Language eng
SUDOCS Number EP 1.23:600/3-89/001
Origin NTIS
OCLC Rec Leader 01299cam 2200337Ia 45020