Coralville Lake
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Coralville Lake is an artificial lake in Johnson County, Iowa, United States, formed by the Coralville Dam, a dam built from 1949 to 1958 on the Iowa River upstream from the city of Coralville, Iowa.
Coralville Dam on June 15, 2008, with the main control gates fully opened, and water flowing over the concrete emergency spillway (left) at about 5 ft (1.5 m) deep
Coralville Dam and Reservoir near Coralville, Iowa.
Coralville Lake as seen from the airplane during winter
Geography of Iowa
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The geography of Iowa includes the study of bedrock, landforms, rivers, geology, paleontology and urbanisation of the U.S. state of Iowa. The state covers an area of 56,272.81 sq mi.
Coralville Lake
…the 712-foot (217 m) emergency spillway on July 5, 1993 (see Great Flood of 1993), reaching a then-record crest. This flood uncovered what is now the Devonian Fossil Gorge. The 1993 record was surpassed by the June 2008 Midwest floods, when water again flowed over the 712-foot (217 m) emergency spillway on June 12, 2008…
Bedrock formations of Iowa
Iowa coal mine, 1936.
Geode half
Landforms of Iowa, based on Prior (1991) and Calvin (1904), with major rivers and streams