The purpose of this technical manual for dam owners is to advance awareness of the characteristics and seriousness of dam safety problems associated with tree and woody vegetation growth impacts on earthen dams, provide a higher level of understanding of dam safety issues by reviewing current damage control policies, provide state-of-practice guidance for remediation design considerations associated with damages associated with tree and woody vegetation growth on earthen dams, and to provide rationale and state-of-practice techniques and procedures for management of desirable and undesirable vegetation on earthen dams.