FORECAST AND OPERATING RESOURCES OF GROUNDWATER IN THE FOOTHERN DAGESTAN
Kondakov V.M., Gazaliev I. M., Kurbanova L.M., Kurbanismailova A.S., Huseynova A.Sh. FORECAST AND OPERATING RESOURCES OF GROUNDWATER IN THE FOOTHERN DAGESTAN // Arid ecosystems. 2022. V.28. № 2 (91). P. 94-101. | PDF
The determination of the predicted operational resources of ground fresh water (PERPV) in the territory of the third order hydrogeological structure – the system of small artesian basins (SMAB) – was carried out taking into account the water deficit in Foothill Dagestan in the conditions of an acutely arid climatic regime. In geological terms, the study area belongs to the Tertiary folding, where over the past decades, work has been carried out on the search, exploration and assessment of reserves and predicted resources for the use of fresh groundwater for domestic drinking water supply. A generalization of previous studies and the identification of promising hydrogeological regions with the calculation of predicted resources for the use of fresh groundwater, especially overdeep wide river valleys, turning into alluvial cones and forming foothill plumes, is carried out. Data on meteorological, hydrogeological and geological study of the territory, chemical composition of groundwater and lithology of cover and aquifers have been processed; identified promising areas for groundwater exploration, areas of their feeding, transit and unloading for the development of a design scheme. The analysis of the operation of the existing water intakes on the approved reserves was carried out and the possibility of increasing the PERPV outside the fields was considered. The hydrogeological conditions of the region, SMAB are given, a brief description of previously explored groundwater deposits is given, promising areas for exploration of groundwater are identified, where their predicted operational resources are calculated. For the limited synclinal structures of the Upper-Middle Sarmatian deposits, the PERPV was determined with the condition of the infiltration of atmospheric precipitation. Its value was 25.6 thousand m3/day. for synclinal artesian intermountain basins, for Chokrak, Chokrak-Tarkhan and Konk-Karagan sandy-clay deposits.
Keywords: East Ciscaucasia basin, stratal and block-stratal confined waters, system of small artesian basins (SMAB), Foothill Dagestan, fresh groundwater resources, river deposition, hydrogeological conditions.
Financing. The work was carried out within the framework of the topics of the state assignment of the Institute of Geology of the Russian Academy of Sciences (State registration No. AAAAA 17-117021310203-3). Topic: «Ecological and geochemical features of groundwater in the North-Eastern Caucasus (Dagestan). Natural and anthropogenic pollution factors».