building site survey, construction expertise of hydrotechnical buildings, land border survey. Planning of melioration systems. Planning of hydrotechnical constructions. Development of management plans. Building site border survey. Engineering researches. Hydrologic calculations. Development of service instructions for water objects. Construction regulations for hydrotechnical buildings. Topographic survey. Cadastral survey. Development of land boundary projects. Reconstruction of drains. Protecting dikes. Modernization of pumping facilities. Waterworks facilities. Construction projects. Forest drain systems. Construction project development. Melliorproject state. State Meliorproject.