<P> In 1923 , the O'Shaughnessy Dam was completed on the Tuolumne River , flooding the entire valley under the Hetch Hetchy Reservoir . The dam and reservoir are the centerpiece of the Hetch Hetchy Project , which in 1934 began to deliver water 167 miles ( 269 km ) west to San Francisco and its client municipalities in the greater San Francisco Bay Area . </P>
<P> In 1923 , the O'Shaughnessy Dam was completed on the Tuolumne River , flooding the entire valley under the Hetch Hetchy Reservoir . The dam and reservoir are the centerpiece of the Hetch Hetchy Project , which in 1934 began to deliver water 167 miles ( 269 km ) west to San Francisco and its client municipalities in the greater San Francisco Bay Area . </P>
what was the purpose of the hetch hetchy reservoir
what was the purpose of the hetch hetchy reservoir
to deliver water 167 miles ( 269 km ) west to San Francisco and its client municipalities in the greater San Francisco Bay Area
to deliver water 167 miles ( 269 km ) west to San Francisco and its client municipalities in the greater San Francisco Bay Area