К вопросу корректировки нормативных документов по определению основных гидрологических характеристик

Solving practical problems in a wide variety of sectors of the national economy, from construction design to land reclamation and water supply, are impossible without surveys and hydrological calculations. Based on calculations of the main hydrological characteristics conducted during the development of the Rules for the Use of Reservoirs on Small and Medium-Sized Ural Rivers, problems arising from the use of calculation methods recommended by current regulatory documents are considered. Solutions to methodological issues are proposed through adjustments to individual clauses of SP 529.1325800.2023. These relate to the temporal heterogeneity of hydrological series, the absence of necessary formulas and the introduction of additional amendments to existing ones, incorrect conditions for regression analysis, and the addition of a method for reconstructing series in the absence of observational data to Section 7 of SP 529.1325800.2023. Other issues related to the significant spatial heterogeneity of the territory in terms of physical and geographical indicators are presented for discussion. They concern the correctness of hydrological calculations in river catchments from the Urals to the Far East and are determined by the difficulties of finding analogue rivers with a synchronous hydrological regime and the complexity of identifying homogeneous regions.