A test bench has been along with the studies of the static equivalent of pressure of flushing nozzles have been developed, under conditions close to the technological process of flushing drainage collectors. The flow rate, speed of nozzle jets, as well as the magnitude of the static equivalent created by them in the pipeline are determined. Nozzles have been identified that more effectively affect the pulp flow.

The practice of operating reclamation systems indicates that, according to the relief conditions, not the entire area of drainage and humidification systems can be optimally manage the water regime of soil. Relief influence assessment when conducting humidification sluicing consists in determining the part of the reclaimed area on which, according to the conditions of the relief, it is possible to create a favorable water regime by regulating the groundwater level. A method for determining the area with a managed water regime using GIS is given.

Some results of field studies on the assessment of the scale and width of flooding of the coastal areas of the reservoirs of Belarus with the help of unmanned aerial vehicles (UAVs) are presented. The assessment results of flooding processes and coastal deformations according to the data obtained with the help of UAVs has proven the effectiveness of modern distance methods.

The problematic issues of operation of water wells: low service life, insufficient maintainability and reduced specific flow rate are highlighted. The circulation reagent treatment of water intake well filters by the swabbing method is considered. The design of the installation for processing the filter section and the technological scheme of reagent regeneration by the method of linear swabbing in a closed chamber are presented. A method for calculating processing modes depending on the design parameters of the submersible device, the speed of the swab, the degree of clogging and filtration parameters in the gravel dressing of a water well describes. Based on the initial data, an example of calculating the duration of the reagent treatment of the filter section using hydrochloric acid as a reagent is considered.

It has been established that when various mineralized waters are used for irrigation and washing, the rate and direction of migration of salts and gypsum in the root layer depend on the concentration of soil solution and wash water. For irrigation, river and artesian water is used sulfate-chloride-sodium, in which the amount of salts ranges from 0.85 to 4.50 g/l. The identified nature of the chemistry of irrigation waters in the dry steppe zone largely determines the development of processes, properties, and the level of fertility of irrigated gray-brown and meadow- serozem soils. The value of the irrigation rate when used for irrigation water with a mineralization of 0.5 to 4.5 g/l depends on the particle size distribution, soil type and depth of groundwater.

Modern problems of using peat soils are considered: in particular long-term negative consequences for the fertility and economic potential of land users. Rational directions  for  maintaining  fertility  and  efficient  use  of drained  peat  soils  are  proposed,  allowing  not  only  to maintain the productivity of agricultural land, but also to significantly improve the quality of fodder and livestock products.  The  direction  of  optimizing  the  structure  of sown areas and the rational use of reclaimed peat soils of Polesie and other regions of the republic is substantiated.

After 36 years the disaster at the Chernobyl nuclear power plant, 60‒80 % of radiocesium is contained in the soil layer of 0‒10 cm, and 3‒30 % is in the soil layer of 10‒20 cm. The maximum content of radiocesium in the soil layer 0‒10 cm is 4520 Bq/kg, the minimum is 495 Bq/kg. These parameters in the soil layer of 10‒20 cm are 1040 Bq/kg and 44 Bq/kg, respectively. The highest specific activity was noted in the tufted vetch (2196±439 Bq/kg) and the lowest in the columbine cornweed (96±66 Bq/ kg). The accumulation coefficient varied over a wide range 0.05–2.55 Bq/kg: Bq/kg.