The article provides a diagram of the possible flooding zone for the area adjacent to the bridge crossing over the Bira River. The calculations were performed on the basis of topographic survey data of the research area in the specialized program "Morphostvor 1". Based on the constructed morph, a flood zone was determined at the Estimated 1% high water level, which was 55.05 meters in the 1977 Baltic Elevation System. Based on the data obtained, flooding of the right-bank floodplain of the river was noted. Bira, but the flooding zone does not reach directly to the territory of the village. The constructed flood zone is schematic in nature and is intended for visualization of the hydrological situation in the studied area, this flood zone cannot be used for design decisions.

Keywords: flooding zone, estimated high water level, bridge crossing, morph gap, Bira River

The paper considers the possibility of using waste from the forest industry, construction waste and ash and slag waste from boiler heating as a basis for the creation of biofertilizers and components that improve the structure of heavy soils. The analysis of experience on the impact of crushed bricks, coniferous and leaf litter with the inclusion of wood components, and ash and slag waste of boiler heating on the growth functions of red clover and watercress over various time intervals is presented. The possibility of using the presented waste in the process of self-infestation of territories is considered. A number of experiments have been conducted to identify the phytotoxic effect, as well as the reaction of general inhibition or stimulation of growth indicators of higher plants when used as a substrate in pure form, or a mixture with natural soil, wood components, samples of ash and slag waste of various shelf life, brick fighting.

Keywords: forest industry waste, construction waste, broken bricks, ash and slag waste, self-fouling, phytotoxicity, soil structure, morphological changes of plants