Chagres River, Panama

Chagres River, Source of Water Supply Of High Level Locks of the Panama Canal

Published Valentines & Sons Publishing Co, New York. Postmarked 1908.

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The Chagres River in central Panama, is the largest river in the Panama Canal’s watershed. The river is dammed twice*, and the resulting reservoirs—Gatun Lake and Lake Alajuela—form an integral part of the canal and its water system. Although the river’s natural course runs northwest to its mouth at the Caribbean Sea, its waters also flow, via the canal’s locks, into the Gulf of Panama to the south.
Wikiepdia: Chagres River & Panama Canal: Layout
*Both dams constructed after 1908