A zoning law determines definitely the residential, industrial and commercial districts; 29 street widenings, openings and cut-offs were under construction in 1921.
The growth of the meanders tends to give the river continually increasing length; but this tendency is counteracted by the sudden occurrence of cut-offs from time to time, so that a fairly constant length is maintained.
In many places there are different channels for high and low water, the latter being partly filled by each freshet, and recut after each subsidence; and the river meanders tortuously through the alluvial bottom in scores of great bends, loops and cut-offs.
The network of shallow and still limans or "cut-offs" in the delta of the Volga and the shallow waters of the northern Caspian, freshened as these are by the water of the Volga, the Ural, the Kura and the Terek, is exceedingly favourable to the breeding of fish, and as a whole constitutes one of the most productive fishing grounds in the world.
There are some cut-offs or oxbow lakes along the Missouri, and many lakelets originally such are scattered along the Platte, Elkhorn, Big Blue and other rivers.
