Lake In The Hills Dam 1, located in Kane County, Illinois, is a key structure on Woods Creek that serves primarily for recreational purposes. Built in 1926, this earth dam stands at a height of 40 feet and spans 780 feet in length, with a maximum storage capacity of 969 acre-feet. The dam's spillway, which is uncontrolled and 396 feet wide, can discharge up to 14,000 cubic feet per second in case of overflow.

Despite its age, Lake In The Hills Dam 1 has a high hazard potential due to its condition being marked as "Not Available." The dam is regulated by the Illinois Department of Natural Resources (IDNR) and undergoes regular state inspections and enforcement to ensure its safety and functionality. With a moderate risk assessment rating, it is vital for stakeholders to closely monitor and manage any potential risks associated with this dam to protect the surrounding community and water resources.