The ordinary rise and fall of the river is comparatively slight, but when the west wind blows steadily for a long time, or when Lake Ladoga sends down its vast accumulations of block-ice, inundations of a dangerous kind occur, as in 1777, 1824, 1879 and 1903.
Nestor, an old monkish chronicler Origin of Kiev, relates that in the middle of the 9th century of the the Slav and Finnish tribes inhabiting the forest region around Lake Ilmen, between Lake Ladoga and the upper waters of the Dnieper, paid tribute to military adventurers from the land of Ras, which is commonly supposed to have been a part of Sweden.
The estuaries of all the great German rivers (for the Niemen and Vistula are properly Polish rivers) debouched in Swedish territory, within which also lay two-thirds of Lake Ladoga and one-half of.
The Neva (40 m.) flows from Lake Ladoga into the Gulf of Finland.
It issues from the south-west corner of Lake Ladoga in two channels, which are obstructed by sandstone reefs, so that the better of the two has a depth of only 7 to 16 ft.