As part of the City of Clearwater’s MOM self-audit competed for EPA Region 4, the Applied Geographic Technologies hydraulic modeling group constructed and calibrated a hydraulic model of the City’s sanitary sewer collection system. The AGT modeling group was the first in the United States to use Wallingford Software’s InfoWorks CS modeling software and one of the first to use NEXRAD radar rainfall data in complete this project. The hydraulic model included all 10-inch and larger diameter lines (approximately 420,000 linear feet and over 1,200 manholes) and 39 pump stations conveying flow to three City operated treatment plants. Capacity analysis included identifying system deficiencies and developing alternatives to eliminate sanitary sewer overflows (SSOs) for rainfall events up to a 10-year, 24-hour rainfall event for existing, 10-year and 20-year projected development.