Hydrological and Morphological Features
of the Upper Angara Mouth Area

T. G. Potemkina^a, N. A. Yaroslavtsev^b, and V. A. Petrov^b

^a Limnological Institute, SB, RAS, ul. Ulan-Batorskaya 3, Irkutsk, 664033 Russia

^b “Morskie Berega” Research Center, ul. Yana Fabritsiusa 1, Sochi, 354002 Russia

E-mail: tat-pot@lin.irk.ru

Received July 18, 2011

Abstract—The hydrological and morphological processes in the mouth area of the Upper Angara (which ranks
second in terms of water abundance among Baikal Lake tributaries) are considered. The major external factors
that determine those processes have been revealed. The main features of the delta’s water regime, including the
effect of anthropogenic level rise in the lake, are described. Specific attention is paid to morphological processes
in the delta and on the barrier bar, separating a large mouth lagoon from the lake.

Keywords: river, lake, mouth area, delta, water and sediment runoff, morphological processes

DOI: 10.1134/S0097807812030086

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