At the time of our audit, Federal Emergency Management Agency (FEMA) estimated that the City of Waterloo, Iowa (City), sustained approximately $1.9 million in damages from severe storms and flooding from September 21 through October 3, 2016. The City did not provide all requested information and explanations necessary to perform our review; therefore, we were unable to assess whether the City’s policies, procedures, and business practices were adequate to account for FEMA Public Assistance grant funds properly. The City’s failure to cooperate with a Federal audit put approximately $1.9 million dollars in potential FEMA grant funding at risk of being deobligated or not funded.