El Atazar Background
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dam type: double curvature concrete arch
buttress
purpose: water supply and regulation
height: 440 ft (134 m)
width at foundation: 171.6 ft (52.3 m)
length of crest: 1312 ft (400 m)
storage capacity: 344,000 acre-ft. |
photo courtesy of Anthony R.
Ingraffea
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The dam may also have served the people by producing
electric power, but the decision was made to confine its purpose to water
supply.
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location: near Madrid, Spain
river: Lozoya, very close to where it joins the Jarama River
foundation: Silurian shale
Three joint systems pass through this foundation.
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construction start date: 1968
construction end date: 1972
first partial reservoir filling:
1970
Maximum storage is 870 m above sea level. Filling began when the diversion
tunnel was closed. It filled to 824 m above sea level in 1971 and then to 860
m in 1972. Questionnable behavior began to occur during the filling between
1971 and 1972. |
photo courtesy of Anthony R.
Ingraffea
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Operations were generally normal until 1977. The dam was monitored for
thermal and hydrostatic effects.
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