Happy Valley (Or.)2014-04-022014-04-022012-03-26https://hdl.handle.net/1794/1583354 pp. Adopted 2012-03-26. Department of Land Conservation and Development Notice of Adopted AmendmentAnnexed 18 properties, totaling 247 acres of land, and converted from Clackamas County to Ci / of Happy Valley Comprehensive Plan designations/Zoning districts for all the subject properties.en-USPublic DomainLand UseAdopted Plan