The City shares the same National Pollutant Discharge Elimination System (NPDES) Storm Water Permit with the cities of Santa Rosa, Cloverdale, Healdsburg, Rohnert Park, Sebastopol, Ukiah, the Town of Windsor, the County of Sonoma, and the Sonoma County Water Agency. These agencies have developed similar policies, procedures and guidelines in implementing their respective Storm Water Programs. Two such guide documents are the Low Impact Development Technical Design Manual and the Sonoma Water Flood Management Design. These manuals are to be followed by developments to comply with the City's Storm Water NPDES Permit and to be consistent with hydrologic analysis and flood design approaches and methods for the this region.