Abstract <p>The “Methodology for Identifying Hydrogen Disturbances in Terrestrial Ecosystems and Landscapes” was developed as a result of combined anthropogenic (hydrotechnical) and natural (climatic-hydrological) impacts by including in the main analysis algorithm two additional blocks for quantitative assessment of not only the main abiotic (meteorological, hydrological, the relative coefficient of change, the Ped’ index) and biotic (quantity and quality of species diversity, fluctuation variability, changes in structure like layering, quality, and quantity of indicator species, food value for meadows, aggregate assessment of indicators for each ecosystem separately, aggregate assessment for landscapes for several ecosystems compatible by profile or block) components of ecosystems, but also a quantitative assessment of two biocost (water and soil) types of components (blocks). For the water block, quantitative analysis and assessment of (a) changes in the frequency of floodplain flooding of territories and (b) long-term changes in groundwater levels were added. Ground-based (quantitative) data on changes in the position of flooding and the location of groundwater levels by area and depth were verified based on space data. In monitoring the position of the groundwater level by area and depth, data on the long-term dynamics of the groundwater level during the low-water period are especially valuable. For the soil block, an analysis and assessment of (a) the quantitative (by depth of occurrence) manifestation of gleyization processes (for humid and arid territories) and (b) the qualitative (by the strength of manifestation in the soil profile, %) of their manifestation (gleyization) were added, as the most informative and easily identifiable soil markers in field conditions during anthropogenic or natural changes in the water content of the territory.</p>