Purpose: to develop the methodology of physical and geographical control of the validity of determining the boundaries of rivers and their special zones in the territory of Tomsk region.
Materials and methods. The initial materials were the materials of the regime hydrological (Roshydromet) and hydrogeological (Gidrospetzgeology) observations, the results of engineering surveys and examinations. The main objects are the Tom river at Tomsk city, the Vasyugan river at New Vasyugan settlement, the Iksa river at Plotnikovo village, the Klyutch river at Polynyanka village. Additionally, data on the Ob and Parabel rivers and other tributaries of the Ob river were used.
Results. The calculations of the position of the coastline and the boundaries of flood and underflooding zones of a number of river valleys in Tomsk region were carried out. A comparison of the characteristic levels of river waters with the hydrogeological, geomorphological and geobotanical conditions of river valleys (also underflooding conditions with the prevailing channel process types) was carried out. The physicogeographical methodology of validity control of estimating the coastline, protection, flooding and underflooding zones boundaries are proposed.
Conclusions. It is shown that estimating the position of the river coastal line in Tomsk region can be carried out according to the data not only on the average daily water levels for the period of the free channel, but also the average monthly levels of river waters of the spring-summer flood and summer-autumn low water season. It was established that the average maximum level and the maximum level of 1 % occurrence relate to the relief, groundwater levels and the vegetation cover of the river valleys. It was revealed that the probability of the river valley underflooding increases in the case of floodplain anabranching and free meandering and decreases with the pre-dominance of limit meandering.
doi: 10.31774/2712-9357-2024-14-1-188-204
river water levels, rivers of the Tomsk region, coastline, flooding and underflooding zones
Savichev O. G. Physicogeographical control of estimating the boundaries of rivers, their water protection zones, flooding and underflooding zones in Tomsk region (the Russian Federation). Land Reclamation and Hydraulic Engineering. 2024;14(1):188–204. (In Russ.). https://doi.org/10.31774/2712-9357-2024-14-1-188-204
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