In 1902, construction began on a dam to supply much needed irrigation water to a very dry western Millard County. Fifteen exhausting years later, Yuba Dam was completed. The water share holders were assessed $5 per share to pay for building the dam, but many did not have enough cash. Instead, they paid for their shares by working on the dam. They used horse-drawn equipment including this compactor wheel to do the job. The men working on the dam called it U.B. Dam, and as they worked they sang, "U.B. damned if you work and U.B. damned if you don't work." U.B. was eventually changed to Yuba.