Record Display for the EPA National Library Catalog


Main Title Environmental Monitoring and Assessment Program, EMAP-Surface Waters: A Northeast Lakes Pilot.
Author Larsen, D. P. ; Stevens, D. L. ; Selle, A. R. ; Paulsen, S. G. ;
CORP Author Corvallis Environmental Research Lab., OR. ;ManTech Environmental Technology International, Inc., Corvallis, OR. ;Nevada Univ., Las Vegas.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-92/417;
Stock Number PB93-135747
Additional Subjects Environmental monitoring ; Surface waters ; Water pollution sampling ; Aquatic ecosystems ; Regional analysis ; National government ; Hydrology ; Biological indicators ; Trends ; Environmental impact assessments ; Water quality ; Biological effects ; Geography ; Information management ; Environmental Monitoring and Assessment Program
Library Call Number Additional Info Location Last
NTIS  PB93-135747 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
In response to a growing need for information about the condition of the nation's ecosystems at regional and national scales, the U.S. Environmental Protection Agency (USEPA) recently embarked on a program called EMAP (Environmental Monitoring and Assessment Program) using a uniform approach for national assessments across and among ecosystem types. In its focus on lake condition at the regional and national scale, EMAP-Surface Waters will address concerns about the present extent and geographical distribution of lakes, their current ecological condition, the proportion that is degrading or improving, where, and at what rate, and the likely causes of adverse effects. The national design is based on a systematic grid of randomly placed points, so that conditions and trends can be estimated with known uncertainty. Lake condition will be assessed primarily through biological measurements; physical, chemical, and landscape information will be used to support and interpret conditions estimated by the biological indicators. The paper describes the EMAP design and indicators strategy tailored for lakes, with examples showing how these indicators can describe condition and trends at national and regional scales.