TO THE ISSUE OF THE ASSESSMENT OF THE WINTER MINIMUM MONTHLY AVERAGE FLOW OF THE RIVERS OF THE LAKE SEVAN BASIN

The work is devoted to the assessment of the winter minimum average monthly runoff of the lake basin. Sevan. The winter minimum average monthly flow rates are calculated for posts on rivers with a series of observations of 40 years or more and flowing into lakes. Sevan. Reliability curves were constructed, the values of the minimum monthly runoff with a security of50, 75, 80, 90, 95 and 98 % for the winter period were estimatedfor 12 sections. The values of runoff norms, its coefficients of variation (Cv) and asymmetry (Cs) are determined. An analysis of the distribution of the studied hydrological characteristics was carried out.