The Board of County Commissioners adopted Board Resolution No. 76-90—creating the Johnson County Stormwater Management Advisory Council (SMAC). SMAC is an advisory group composed of one appointed representative for each of Johnson County's 20 cities as well as non-voting members from the four surrounding counties, Kansas City, MO, and the Mid-America Regional Council.

Stormwater Management Advisory Council (SMAC) primarily operates as an advisory body to the Board of County Commissioners and performs the following functions:

• Review recommendations of the Stormwater Management Program
• Make recommendations to the Board of County Commissioners

In addition, SMAC provides the mechanism to complete the following efforts:

• Ensure the stormwater funds collected through the 0.1 percent sales tax levy are consistently applied using the same rational basis without concern for jurisdictional and political boundaries
• Use the stormwater funds collected through the 0.1 percent sales tax levy to correct the more severe flooding problems throughout the County with cost-effective solutions
• Provide a think-tank to consider new and innovative ways to properly manage stormwater