Khakova dam breach by Big Serge

 Russo-Ukrainian War: Dam! Shorter than the one by Simplicius and also gives dome history.

“Portaging a boat on the middle Dnieper in 800 AD was dangerous. While disembarked and laboriously dragging the boat downstream, a trading party would be highly vulnerable to attack by the various warlike tribes which inhabited the region at the time. So it became necessary to build some sort of outpost stronghold which could serve as a waypoint to make passage down the river at least acceptably safe. Hence, Kiev - buit originally as a timber fortified trading post to ease passage along the middle Dnieper. 

This is perhaps interesting, but as an aside it illustrates the basic point that for most of human history the Dnieper was not a friendly or easily navigable river akin to the Mississippi or the Rhine, and in the Soviet era a major effort was undertaken at last to tame it, in the form of a series of hydroelectric dams. These dams stiffled the rapids, generated electricity, smoothed the river’s course, and created enormous resevoirs, of which the Kakhovka resevoir is the largest by volume.”