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| Walnut Grove Dam |
The Dam:
"Besides being the largest piece of solid masonry in the United States, [the Walnut Grove Dam] also drains [ed] the largest watershed in the world, being upwards of 400 miles of territory." (*1)
But in the dark, early hours of February 22, 1890, heavy rains would cause the dam to "literally explode."
"The disastrous breach of Arizona's first major dam poured 4 billion gallons of water into a canyon above Wickenburg and killed approximately 100-150 people, although no one will really ever know how many people drowned." (*2)






