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The main limiting factor preventing the runoff formation from lake catchment areas is the high projective cover of the soil surface with herbaceous vegetation. At the same time, air temperature changes over the past millennia have affected only the productivity of aquatic vegetation and, accordingly, the ratio of bottom sediments organic and mineral matter. The current sedimentation rates in the low-mountain lake Sukhoi Liman depends on the combined natural and anthropogenic factors, namely, the precipitation specifics, sparse projective soil cover and increased recreational load.