Happy Valley (Or.)2014-04-022014-04-022011-10-12https://hdl.handle.net/1794/15582107 pp. Adopted 2011-10-12. Department of Land Conservation and Development Notice of Adopted AmendmentOpportunities Analysis & Implementation Strategy the City 's Comprehensive Plan, involving policies and amended narrative.en-USPublic DomainLand UseHappy Valley Notice of Adopted Amendment (2011-10-12)Adopted Plan