Why was the Hoover dam decided to be built in its known location

The main reason for building Hoover Dam was to supply the electrical power necessary to transport 4.4 million acre-feet—over a quarter of the Colorado River's average annual flow—to California.

Explanation:

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.

sonar maybe? ? i dont know the choices