Anchor
An anchor is a device, normally made of metal, used to connect a vessel to the bed of a body of water to prevent the craft from drifting due to wind or current. The word derives from Latin "ancora", which itself comes from the Greek ἄγκυρα ("ankura").
Anchor Dam
Unfortunately the reservoir never filled. During construction, the discovery of solution cavities in the bedrock forced the re-positioning and re-configuration of the dam, causing delays and added expense. The same karst solution cavities prevented Anchor Reservoir from filling its design capacity of . It has never been full. More than 50 sinkholes had been identified in the underlying Chugwater Formation geology of the reservoir basin, with at least one of them 30 feet in diameter and 35 feet deep. The site's lack of "hydraulic integrity" was well known to Bureau scientists before and during construction.