Record Display for the EPA National Library Catalog


Main Title Mathematical Management Model Unconfined Aquifer.
Author Sechris, Albert ; Clabor, B. J. ; Rayne, Frank ; Well, D. M. ;
CORP Author Texas Tech Univ., Lubbock. Water Resources Center.
Year Published 1970
Report Number DI-14-01-0001-1993; OWRR-C-1537(1993); 04931,; C-1537(1993)(1)
Stock Number PB-197 788
Additional Subjects ( Ground water ; Management) ; ( Ground water recharge ; Mathematical models) ; ( Aquifers ; Texas) ; Hydrogeology ; Computer programs ; Water consumption ; Permeability ; Water storage ; Underground storage ; Drawdown ; Water wells ; Errors ; Ogallala Aquifer ; Lubbock(Texas)
Library Call Number Additional Info Location Last
NTIS  PB-197 788 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 155p
The numerical model for groundwater flow developed by the California Department of Water Resources (DWR) was adapted to a 2290 square mile region of the Ogallala Aquifer in the Southern High Plains of Texas. A computer program was written to define Theissen type polygons around each of 183 observation wells. Model verification was based on a five year period. Net withdrawals for this period were estimated from consumptive use calculations. The model is more sensitive to net withdrawal variations than to either permeability or storage coefficient variations. Constant values of aquifer properties and a six element consumptive use vector yielded an average error of 0.07 feet after five years, and a standard deviation of 9.1 feet. A recharge operation in one segment of the study area is used as an example of usefulness of the model. (Author)