For more than 50 years, gold dredging turned the Trinity River upside down and left behind mounds of rock tailings. The first operation in 1889 was the Kise Bros. Dredge. The Carrville Dredge at this site was the last dredge operating for a few years before and after World War II, then sat idle until it was shipped to Brazil in 1965. The Valdor Dredge mined the Trinity River between the old Junction City Powerhouse and Lime Point until it was dismantled in 1922, then was reassembled as the Lewiston Dredge near Eastman Gulch. The Pacific Dredge failed at Coffee Creek, then was moved south to the Graves Ranch at Stringtown. The Estabrook, the world’s largest wood hull dredge, was located near Trinity Center and excavated more than 250,000 tons per month. The Trinity Dredge, operated by Mary E. Smith, was the richest, dredging over $2,700,000 in gold from areas now covered by Lewiston Lake. The Junction City (Yuba) was dismantled and rebuilt as the Fairview at Minersville in 1949, but failed to float and remains at the bottom of Trinity Lake. Other dredges included the Madrona, Galvin, Poker Bar, Gardella, Gold Bar, and Alta Bert #1 and #2.