Record Display for the EPA National Library Catalog


Main Title Electric Analog Model Study of the Hydrology of the Saginaw Formation in the Lansing, Michigan Area - 1963.
Author Wheele, Merlin L. ;
CORP Author Michigan State Univ., East Lansing. Inst. of Water Research.
Year Published 1970
Report Number TR-ID; OWRR-A-001-MICH; 08184,; A-001-MICH(3)
Stock Number PB-199 538
Additional Subjects ( Hydrology ; Mathematical models) ; ( Water Supply ; Michigan) ; ( Sedimentary rocks ; Aquifers) ; Analog simulation ; Leakage ; Unsteady flow ; Saginaw Formation
Library Call Number Additional Info Location Last
NTIS  PB-199 538 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 72p
An electric analog model was constructed to deal with the problem of groundwater withdrawal by many centralized supply systems from the Saginaw Formation, the primary source of water for domestic and industrial use in the Lansing, Michigan area, which has resulted in a large cone of depression which is expanding rapidly. The initial design of the model utilized data presently available. In order to determine the leakage rate, a steady-state, or equilibrium analysis of the model was initiated using actual conditions, thus eliminating all time-dependent variables from the hydrologic system. The model was then modified for transient analysis until the analog simulation of the decline in the piezometric surface for several periods agreed closely with actual declines. It was also necessary to make a detailed examination of the pumpage from the aquifer. Determination of the leakage that was occurring from the glacial drift, in units of gallons per day square mill per foot of head difference was also about the hydrology of the Saginaw Formation. (WRSIC Abstract)