Construction methods utilized by the Portland District during its 80-year experience record of building rubblemound jetties are discus sed, along with design criteria that have been developed by the Corps of Engineers for required weight of individual stones in primary cover layer of rubblemound jetties. Results of the 1963 and 1964 continuing prototype study of Umpqua River, Oregon, ocean jetty are presented. The primary purpose of the surveillance program i s to improve the basic criteria for design and construction of rubblemound jetties along the Oregon coast.