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.
Harrisville Pond Harrisville Pond is a 138 acre water body located in Cheshire County in southwestern New Hampshire, United States, in the town of Harrisville. It is one of many lakes and ponds along Nubanusit Brook, a tributary of the Contoocook River. Water from Nubanusit Lake flows via the Great Meadows into the pond on the north side and out of the pond at two dams on the south side. One dam allows the level of the pond to be raised or lowered and also adjusts the flow through the mills that span that part of the outlet, while the other dam is made of large stones and sandbags. The village of Harrisville is located at the outlet of the pond.