Although fairly large with a capacity of , Millerton Lake, the reservoir of Friant Dam, is small compared to other reservoirs in the San Joaquin basin, such as Don Pedro and Pine Flat. The Bureau of Reclamation in conjunction with the California Department of Water Resources has proposed the construction of a new dam on the San Joaquin, Temperance Flat Dam, a few miles upstream of Friant. The proposed $1.2-3.5 billion dam would stand high and create a reservoir of , well over twice the capacity of Millerton Lake. Proponents of the project cite numerous benefits: flood control, increased storage, hydroelectric potential, and capacity to provide a greater flow in the downstream river during the dry season. It would also give dam operators the advantage of being able to maintain the river to a lower temperature due to the reservoir's great depth. The new reservoir would provide an estimated annual yield of . In November 2014 the dam received $171 million of state funding from Proposition 1A, though project backers had sought $1 billion in funding.