The above video depicts the activity of splash damming, a prevalent technique to transport timber to mills before railroads and roads were built. In Oregon, the practice occurred from approximately 1880-1950. The below photos below show log drives on the Siletz River and rolling logs into the splash dam at the now abandoned town of Valetz in the heart of the Central Oregon Coast Range.
As a result of splash damming, severe stream and riparian degradation occurred. Obstacles such as boulders and natural log jams were removed to facilitate downstream transport. The human-caused debris torrents, In turn, scoured streams to bedrock and removed gravel, cobble, and stream complexity critical to salmon and trout.