ISSN 1561-4212. 9 1. - - . 2. - - 3. - - 1. / - . 248-258. 2. Stepanov A.V., Bekenova G.K., Levin V.L., Hawtho rne F.C. Natrotitanite, ideally (Na0.5Y0.5)Ti(SiO4)O, a new mineral from the Verkhnee Espe deposit, A kjailyautas mountains, East- ern Kazakhstan district, Kazakhstan: description an d crystal structure // Mineralogical Magazine. 2012. Vol. 76(1). P. 37-44. 3. / . // . - 2011. - 302-310. 4. / . ., 70- - - . . 217-222. - - - - - - - - - The article presents the results of the survey of t he technical and operational state of water account ing systems at the Ters-Ashbylak reservoir located in t he Zhambyl region.