f An Assesment of "Hydraulic Jump" in Hydrogeological Boreholes During The Pumping

The main purpose of study is to define the phenomenon of "hydraulic jump" level and determine what extent it affects the values during pumping from boreholes. Consideration the flow of water to boreholes and the "hydraulic jump" formation indicates that the phenomenon can cause significant error at calculation hydrogeological parameters in the boreholes during pumping. This work reflects the reasons for formation of "hydraulic jump" and the methods of its determination. Calculation of "hydraulic jump" level in wells producing real value in determining the filtration coefficient in the wells and reduces the error in determining it to 98%.