An examination of the morphological and sedimentary characteristics of 27 profile lines at 13 gravel beach study sites along the Oregon coast revealed that the heights of the gravel beaches ranged from 5.7 to 7.1 m (19-23 ft), while the slopes of the beaches varied from 7.7º to 14.1º. Mean grain-sizes were found to range from -4.9Ø (30 mm) to -7.0Ø (128 mm), and were classified as well sorted to moderately well sorted. However, a comparison of these parameters among stable versus eroding gravel beaches revealed no clear discernable pattern. In contrast, it would appear that a key difference in the stability of the gravel beaches was the volume and width of gravel contained on the beach, with beaches containing larger volumes of gravel (> 50 m3.m-1 (538 ft3.ft-1)) and larger widths (> 20 m (66 ft)) being the most stable. Based on this analysis, a crest elevation of ~7.0 m (23 ft), mean grain-size of no less than -6.0Ø (64 mm), and a beach slope of 11º was recommended in future designs of dynamic revetments for the Oregon coast. While numerous quarry sites were identified that could supply crushed rock for the building of a dynamic revetment, rounded gravels were more difficult to locate and tended to be located furthest from the coast increasing the costs that would be incurred to transport the material. Without doubt, the largest constraint that likely limits their adoption is the cost of transporting the gravels to a particular site.
SEC,TWP, and RGE are the township range section locations