Record Display for the EPA National Library Catalog


Main Title Total Alkalinity of Surface Waters: A Map of the Western Region.
Author Omernik, J. M. ; Griffith, G. E. ;
CORP Author Corvallis Environmental Research Lab., OR.;Northrop Services, Inc., Corvallis, OR.
Year Published 1986
Report Number EPA/600/J-86/410;
Stock Number PB88-104302
Additional Subjects Surface waters ; Alkalinity ; Maps ; Hydrographic surveys ; Regional geography ; Elevation ; Rocks ; Lakes ; Streams ; Reprints ; Western Region(United States) ; Acid rain
Library Call Number Additional Info Location Last
NTIS  PB88-104302 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 7p
The map of total alkalinity of surface waters in the western region illustrates the general patterns of the relative potential sensitivity of surface waters to acidic deposition. As with geology and physiography, surface water alkalinity in the West varies widely. Most all low-alkalinity lakes and streams occur in the glaciated, high-elevation alpine and sub-alpine zones of the numerous mountain ranges. These watersheds are small with steep slopes and thin acidic soils. The lowest alkalinity waters are associated most often with granitic and gneissic rock types, but may also be found in volcanic and certain sedimentary areas. Alkalinity concentrations are generally greater in surface waters at lower elevations and often are extremely high in the intermontane valleys, basins, and plateau areas. (Copyright (c) 1986 Soil Conservation Society of America.)