Functioning of Yuzhnoukrainskoy AES substantially influences on changes activity of Н-3 in waters of Tashlykskogo and Aleksandrovskogo of storage pools, although practically does not change in them the dynamics of maintenance of Cs-137, Co-60, Mg-54. In these reservoirs changeability of activity of Sr-90 the more than anymore middle volumes of their «blowing» out, that testifies to influence of changes of the mode of fall of atmospheric fallouts in a region, which strengthen the superficial flow of surrounding territory to Tashlykskomu to the storage pool.