ABSTRACT
The regime and balance of subsurface waters are formed as a result of the likely determinative interaction of many geological-hydrogeological and physical-geographical factors which are viewed as regime-forming factors. In the formation of a disrupted regime of groundwater technogenic interactions play a key role. The principle of functioning of these interactions is well known and therefore the disrupted regime is studied mainly by means of analytical equations and numerical methods. The chapter examines the hydrodynamic principles as applied to the study of water regime and balance of elementary and local flows of subsurface waters. The hydrodynamic principles of the study of the regime, balance of subsurface waters include analysis of mathematical methods of solutions as applied to types of problems. The problems are solved both by analytical and numerical methods. Numerical methods are directed towards simple and complex solutions to all the aforesaid problems. Determination of the hydrogeological parameters of an aquifer is carried out by numerical, analytical methods.
