The relationship between the regime of rivers and lakes and atmospheric precipitation.

All rivers and lakes are fed directly or indirectly from atmospheric precipitation. Primary path is when an abundance of precipitation falls into the riverbed or into a lake and thereby affects the flood. For example, rivers in the equatorial zone and in the tropics are flooded with rain all year round.
Indirectly, when the rivers originate from mountain glaciers, which are replenished in turn thanks to snow. And in spring, when the snow melts from the adjacent territories, the rivers overflow even more. Then the rivers themselves affect the lakes.