Texte anglais à traduire :
The New Melones Project was authorized in 1944 to create a much larger reservoir and to establish a new hydroelectric plant. It would also be specifically designed to prevent floods. It was a controversial issue. The dam's opponents argued that its presence would inundate the river valley, eliminate the natural whitewater rapids, flood many of the massive unique limestone cave formations characteristic of the area, and destroy archaeological resources found along the river. Initial archaeological surveys were made by the Smithsonian River Basin Surveys in 1948 (Fredrickson 1949). Further surveys were done by regional universities. The consensus after the surveys was that the dam would be built. Upon the dam's completion, the valley filled with water, covering the old mining town of Melones and the original Melones Dam.

The lake was constructed by the US Army Corps of Engineers and transferred to the Bureau of Reclamation shortly after its completion in 1980. Cultural resources affected by the project were transferred to the Department of the Interior with the Heritage Conservation and Recreation Services (HCRS, a short-lived organization that was established during the Carter administration) responsible for the archaeological mitigation program. New Melones is a unit of the Central Valley Project.

Today New Melones Lake provides irrigation water, hydroelectric power, flood control, wildlife habitat, fishing, camping, boating, and other recreation as part of the Glory Hole Recreation Area.