From the mouth of the Soz numerous low islands appear in the bed of the Dnieper. The river divides into numerous branches. The entire trough lying between the Dnieper and the Pripet is a labyrinth of river branches, lakes, old river beds, swamps and fens. Thru the Pripet the volume of the Dnieper River increases twofold, and very seldom flows along in a single bed. The tributaries on the right side, the Teterev and the [73]Irpen, bring the Dnieper the first remembrances of the Ukrainian plateau country, and soon its spurs appear on the right river bank. The Dnieper presses against this bank and forms the picturesque precipices above which glisten the gilded domes of the ancient churches of Kiev. Here the Dnieper receives the largest of its tributaries on the left, the navigable Desna. Thus the formation of the Dnieper River is completed, its source-rivers, the Pripet, Beresina, the upper Dnieper, the Desna and the Soz have united to build a majestic stream. Its normal average width is 600–850 meters near Kiev. During the spring floods, however, the width of the river exceeds 10 km.; from the high, right bank one can barely see the woods of the left. All the islands, sand-banks, swamps, meadows, river branches and old river beds disappear beneath an interminable mass of yellowish water, rolling slowly toward the south. Deep into the valleys of the tributary streams the high-water enters, and receding, leaves behind a layer of fertile river mud. Not without reason did Herodotus compare the Dnieper with the Nile. The floods generally occur but once a year—in the spring, when the snows melt. In this respect the Dnieper differs from the Dniester and is similar to all the other rivers of Eastern Europe. In the early summer, at the time of the greatest precipitation in the Dnieper country, small floods occur only occasionally, because the rain-water is stored up in the many swamps and moors of the upper Dnieper country. The spring high-water originates in the great masses of snow, which remain lying all thru winter, melting and flowing off all at once in the spring. After an ice-drift lasting 5–12 days, the high-water comes and lasts a month and a half. It attains its highest level in the middle of April; at this time the water stands at 3.2 meters above normal at Mogilev, 2.2. meters at Kiev, 2.6 meters at Kreminchuk, 2 meters at Kherson, 0.3 meters [74]at the delta. The spring floods are at present becoming greater and more irregular, consequently more dangerous, too, than they have been previously. The progressive destruction of forests has contributed most to this condition.