Clackamas County has an Urban Growth Management Agreement (UGMA) with every city in the county except Portland (because unincorporated county lands within the city of Portland are so minimal, no UGMA has ever been initiated). These UGMAs are necessary for management of areas of mutual interest to coordinate planning and service delivery so as to provide a smooth transition when lands are annexed. Each city’s UGMA boundary and each agreement is individually negotiated and pertains to specific issues between the county and that city.