The technique of pilot natural studies by definition of critical effort at which there is a capsizing of the trees together with root system growing on coast of reservoirs of the hydroelectric power stations subject to washout as a result of impact of fluctuations of water level, wind, wave loadings and abrasion is given It is necessary for establishment of possibility of use of trees of a coastal zone as support of rope system of devices for collecting and transportation of wood. Pilot studies were conducted on Bratsk and Ust-Ilimsk reservoirs during the period from 2000 to 2012.

Keywords: coastal zone of reservoirs, the washed-away coast, the coastal water area, critical effort, wind loading, effort of rooting out, prism of roots , support of rope installation, wood transportation, "ownerless wood"

In article considered new rigging locks, for reliable fastening of raft side binding, chains, bindings when forming sections, rulers and rafts from assortments and switches, and also the "ownerless" wood with various dimensional characteristics differing in simplicity, availability and low cost of their production in the conditions of repair bases the timber floating of the enterprises are described.

Keywords: rigging lock, timber bundling, raft, wood alloy, "ownerless wood", coastal water area