ASSESSMENT OF THE HYDROGEOLOGICAL CONDITIONS OF THE KARABAGH-MIL PLAIN

Abstract

Mil-Karabagh plain, the studied territory, located to the north-east from the piedmont of the Lesser Caucasus. The main irrigation canals of the region, including the bed of the Yukhari-Karabagh canal, have high water permeability, as they are built from local soils. This ensures that surface and underground waters interact, feeding each other along the flow. The amount of precipitation in different parts of the Karabagh plain was 370-453 mm, and they fall unevenly in different seasons. Thus, the maximum amount of precipitation is observed in autumn and spring, and the minimum amount of precipitation is observed in winter and summer. There are 6 aquifers (water-bearing horizons) in the upper part of the Mil plain: 1 underground, 5 confined aquifers. The underground and three confined aquifers are associated with the Quaternary period, the fourth aquifer is associated with the Absheron, and the fifth with Aghjagil stages sedimentary rocks. The variability of the level mode is fully studied here. Sources of formation of underground water resources and methods of their effective use have been identified to a sufficient level. The horizon of underground waters and water strikes form a single water horizon in the elevated parts of river tributaries. The water deposits mentioned here are composed of boulder-gravel-pebble stones according to their lithological composition, clay and clayey deposits are rare. These deposits are found at depths of up to 110 m and more. The degree of natural drainage of the territory is one of the main factors influencing soil reclamation, depending on the geological structure, geomorphological conditions and features of the relief. The Karabagh irrigation massif is served by the Mil-Karabagh reservoir. Which discharges drainage water with an average mineralization of 12.7 g/l to 200 million m3 per year. Occurrence depth of the groundwater within the territory of the Karabagh irrigation massif 0-10 m and deeper from surface. There is a tendency to decrease the depth of groundwater in the area from the south-west to the north-east, i.e. from the piedmont to the Kura river. Keywords: underground water, rural economy, drainage, water strikes, hydrogeological basin.