What was the original name of the dam that serves as the northern boundary of the Topock Marsh?
Hoover Dam Hoover Dam, originally known as Boulder Dam from 1933 to 1947, when it was officially renamed Hoover Dam by a joint resolution of Congress, is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives. The dam was named after President Herbert Hoover.
Pawtuckaway Lake Pawtuckaway Lake is a 784 acre water body located in Rockingham County in southeastern New Hampshire, United States, in the town of Nottingham. The official name of the lake is Pawtuckaway Pond. The original, natural pond was enlarged in the 19th century by the construction of four dams. Three of the dams, near the southern end of the lake, feed the Pawtuckaway River, which flows southeast to the Lamprey River in the western part of the town of Epping. The fourth dam, located at the north end of the lake, releases water to the Bean River, leading to the North River and ultimately the Lamprey River in the northern part of Epping. The lake is located in the Piscataqua River drainage basin.