From Ohio History Central
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After the flood waters receded, Patterson and other Dayton residents were determined to prevent a future disaster of this magnitude. They hired hydrological engineer Arthur Morgan to come up with an extensive plan to protect Dayton from floods. Morgan recommended the construction of a series of earthen dams on the Great Miami River, as well as modifications to the river channel in Dayton. Governor James M. Cox supported the plan, helping to gain passage of the Vonderheide Act, which is also known as the Ohio Conservancy Law, in 1914. The law gave the state the authority to establish watershed districts and to raise funds for improvements through taxes. Although the Vonderheide Act was challenged in both the state and United States supreme courts in Orr v. Allen (1915 and 1919), the law was upheld. In 1915, the Miami Conservancy District was created in response to the Vonderheide Act. It became the first major watershed district in the nation.
[[Category:The Progressive Era]]