Appliance of Pumping Data of Wells for Obtaining Transmissivity Distributions of Aquifers for Hydrogeological Model of Latvia

Abstract

Abstract – In 2010-2012, the hydrogeological model (HM) of Latvia LAMO was established by scientists of Riga Technical University (RTU). LAMO generalizes geological and hydrogeological information accumulated by the Latvian Environment, Geology and Meteorology Centre (LVGMC). The commercial program Groundwater Vistas (GV) is used for running LAMO. In 2013-2014, LAMO was considerably upgraded. Density of the hydrogeological network (rivers, lakes) was increased, cuttings of river valleys into primary geological strata were accounted for, transmissivity distributions for aquifers were refined. To improve transmissivity data of HM aquifers, information provided by pumping tests for wells was used. The refined transmissivity data were applied, to create the permeability maps of aquifers as the variable initial data for the GV system. To accomplish methods of numerical interpolation and digital image processing were used reliability