Abstract

This work contains analyses of field research data for siltation of Gumati Hydro water supply system. The dynamics of hydrolic filling by water supply system’ drift is as follows: the first four years drift settled down with the intensity of 5.2 mln. m³ per year, in the second period the intensity of drift sedimentation was 4.3 mln. m³ and in the third period – 1.3 mln. m³.

The siltation of this water supply system took place 10 years earlier than the designed one.

Keywords: siltation, drift, water discharge, drift discharge, weighted drift, bottom sedimentation, water muddiness, grading, drift transit, downstream, wash-out