Titre de série :	U.S. Geological Survey Water Supply paper, 2239
Titre :	Ground-water resources and potential hydrologic effects of surface coal mining in the northern powder river basin, Southeastern Montana
Type de document :	texte imprimé
Auteurs :	Slagle, S. E. ; Lewis, B. D. ; Lee, R. W.
Mention d'édition :	United States Gouvernment Printing Office
Editeur :	United States Gouvernment Printing Office
Année de publication :	1985
ISBN/ISSN/EAN :	CI-05059
Note générale :	The shallow groundwater system in the northern powder river basin consists of upper cretaceous to holocene aquifers overlying the bearpaw shale-namely, the fox hills sandstone/ hell, creek, fort union, and wasatch formations/ terrace deposits, and alluvium. Ground-water flow above the bearfow shale can be divided into two general flow patterns. An upper flow pattern occurs in aquifers at depths of less than about 200 feet and occurs primarily as localized flow controlled by the surface topography. A lower flow pattern occurs in aquifer of depths from about 200 to 1,200 feet and exhibits a more regional flow, which is generally northward toward the yellowstone river with significant flow toward the powder and tongue rivers.
Langues :	Anglais (eng)
Mots-clés :	Eau souterraine  Ressource en eau  Hydrologie  Géologie  Bassin HYDROGEOLOGIE  PRECIPITATIONS  Irrigation  Evapotranspiration  Qualité de l'eau
Index. décimale :	551 Géologie, météorologie, hydrologie générale
Résumé :	The shallow groundwater system in the northern powder river basin consists of upper cretaceous to holocene aquifers overlying the bearpaw shale-namely, the fox hills sandstone/ hell, creek, fort union, and wasatch formations/ terrace deposits, and alluvium. Ground-water flow above the bearfow shale can be divided into two general flow patterns. An upper flow pattern occurs in aquifers at depths of less than about 200 feet and occurs primarily as localized flow controlled by the surface topography. A lower flow pattern occurs in aquifer of depths from about 200 to 1,200 feet and exhibits a more regional flow, which is generally northward toward the yellowstone river with significant flow toward the powder and tongue rivers.
Note de contenu :	The shallow groundwater system in the northern powder river basin consists of upper cretaceous to holocene aquifers overlying the bearpaw shale-namely, the fox hills sandstone/ hell, creek, fort union, and wasatch formations/ terrace deposits, and alluvium. Ground-water flow above the bearfow shale can be divided into two general flow patterns. An upper flow pattern occurs in aquifers at depths of less than about 200 feet and occurs primarily as localized flow controlled by the surface topography. A lower flow pattern occurs in aquifer of depths from about 200 to 1,200 feet and exhibits a more regional flow, which is generally northward toward the yellowstone river with significant flow toward the powder and tongue rivers.

U.S. Geological Survey Water Supply paper, 2239. Ground-water resources and potential hydrologic effects of surface coal mining in the northern powder river basin, Southeastern Montana [texte imprimé] / Slagle, S. E. ; Lewis, B. D. ; Lee, R. W.  . -  United States Gouvernment Printing Office . - United States Gouvernment Printing Office, 1985.
ISSN : CI-05059
The shallow groundwater system in the northern powder river basin consists of upper cretaceous to holocene aquifers overlying the bearpaw shale-namely, the fox hills sandstone/ hell, creek, fort union, and wasatch formations/ terrace deposits, and alluvium. Ground-water flow above the bearfow shale can be divided into two general flow patterns. An upper flow pattern occurs in aquifers at depths of less than about 200 feet and occurs primarily as localized flow controlled by the surface topography. A lower flow pattern occurs in aquifer of depths from about 200 to 1,200 feet and exhibits a more regional flow, which is generally northward toward the yellowstone river with significant flow toward the powder and tongue rivers.
Langues : Anglais (eng)

Mots-clés :	Eau souterraine  Ressource en eau  Hydrologie  Géologie  Bassin HYDROGEOLOGIE  PRECIPITATIONS  Irrigation  Evapotranspiration  Qualité de l'eau
Index. décimale :	551 Géologie, météorologie, hydrologie générale
Résumé :	The shallow groundwater system in the northern powder river basin consists of upper cretaceous to holocene aquifers overlying the bearpaw shale-namely, the fox hills sandstone/ hell, creek, fort union, and wasatch formations/ terrace deposits, and alluvium. Ground-water flow above the bearfow shale can be divided into two general flow patterns. An upper flow pattern occurs in aquifers at depths of less than about 200 feet and occurs primarily as localized flow controlled by the surface topography. A lower flow pattern occurs in aquifer of depths from about 200 to 1,200 feet and exhibits a more regional flow, which is generally northward toward the yellowstone river with significant flow toward the powder and tongue rivers.
Note de contenu :	The shallow groundwater system in the northern powder river basin consists of upper cretaceous to holocene aquifers overlying the bearpaw shale-namely, the fox hills sandstone/ hell, creek, fort union, and wasatch formations/ terrace deposits, and alluvium. Ground-water flow above the bearfow shale can be divided into two general flow patterns. An upper flow pattern occurs in aquifers at depths of less than about 200 feet and occurs primarily as localized flow controlled by the surface topography. A lower flow pattern occurs in aquifer of depths from about 200 to 1,200 feet and exhibits a more regional flow, which is generally northward toward the yellowstone river with significant flow toward the powder and tongue rivers.