The p5ka freezes in late November or early December. Opens in March. During the spring flood, the entire width of the valley is flooded. The duration of the spill is about a week in the upper reaches, and about two weeks in the middle reaches. During a spill, water rises by 1-1'/› arshin. Spills occur not only in the spring, but even in the summer and autumn after heavy rains, but these floods are full of water.
R%ka Unava. (Right tributary of the Irpen).
The source is at Cape Sokolcha; to Cape Fastov the flow is directed to the east, further to the confluence with the river. Irpen in the north-east. The length of the river is about 80 versts.
The banks of the valley up to Cape Fastov are mostly deserted. From Fastov to the village of Snigirevki is steep and steep in places. Ot l. Snigirevka to the village of M.-Snetinka, the left bank remains flat, and the right bank rises and remains steep. From the village of M.-Snetinka to Kopievka, both are again gently sloping, but more elevated, and from Kopievka to the mouth, both are high, steep and steep.
Almost its entire length is covered with forest, and the right bank, on the contrary, is open with few exceptions.
The soil is loam, some of it is black soil. The width of the valley ranges from 100 paces to 1'/3 versts.
The valley for the most part is a wet meadow, only the section from the village. Volitsa to Cape Fastov is very swampy and completely impassable.
Width of the r$ki from 1 arsh. up to 4 fathoms, depth from '/3 arch. up to 3 arsh., and in the pits it reaches up to 8 fathoms. Current speed is 2-3 feet. per second. Frequent dams form along the course of the river a whole series of ponds of various sizes. The ponds are impassable for fording. The banks of the river are not high! e—"/"—1 arsh., they descend steeply into the river.
In general, the Russian Federation of Unava, due to its insignificant size and significant number of crossings, cannot serve as a serious obstacle to the movement of troops. The exception in this regard is the section with. Volitsa—m. Fastov, GDB valley is so swampy that it is certainly impassable. There are 19 permanent crossings. Many of these crossings are operational and can withstand artillery fire. Points convenient for establishing new crossings to Cape Fastov are found very often, and from Fastov to the mouth - at Fastov, at Snetinka and in Ofirn.
The river freezes at the end of November or early December. Opens in mid-March. The flood fills the entire valley. The water rises 1'/"-2 arsh. above ordinary.
R. Stugna. (Right tributary of the Dntra river).
The source is 3 versts east of the village of Mal. Snetinkau flows northeast to the eastern edge of the village. Small Motovilovka, further north to x. Barovaya (Borovaya) then east to the mouth. Length 58 versts. The right bank of the valley from the source of the river to the village. Kopachi is steep, far to the village. Nov, Bezradichi flat, left, on the contrary, to the village. Digging the floor, and further to the village. New Bezradichi is cool. From N. Bezradichi to the mouths of both banks of the LBsista. The right bank is besides lysist from the village. Kopachi to the village. N. Bezradichi.
The width of the valley ranges from 100 fathoms. up to 8 versts. The bottom of it is mostly swampy, in many places accessible to traffic only by pedestrians.
The width of the river is from 8 to 10 steps, the depth is from 1/4 to 11 fathoms. The flow speed is 1-3 feet. per second. Float is mostly viscous. The banks are narrower, rising above the water from '/4 to 1 arsh..
In general, the river, by its dimensions, does not pose a serious obstacle to the movement of troops, but the swampiness of the valley and the large number of ponds that are impassable for fording increase its significance as barriers.
There are 14 permanent crossings. Most of them are mill dams. The crossings are mostly poorly maintained and the artillery is used! And most will not survive.
There are a lot of Brodys everywhere; There are also many points where it is convenient to arrange new crossings.
The river freezes in November or early December. Opens in March, sometimes in April. During floods, the water rises 1-2 arsh, flooding the valley and demolishing bridges.
R'ka Ros. (Right tributary of the Dnipro river).