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- The Siuslaw jetties (/saɪˈjuːslɔː/ sy-YOO-slaw) at Florence, Oregon, in the United States, are parallel rubble-mound structures at the entrance of the Siuslaw River, bounding the north and south banks and protecting the navigation channel. The jetties extend into the Pacific Ocean, with spur jetties designed to reduce breakers and shoaling across the sand bar. The U.S.Army Corps of Engineers (USACE) completed the jetties in 1917, and completed reconstruction and lengthening projects in 1962. USACE lengthened the jetties again in 1985, and spur jetties were added at that time to reduce shoaling and the need for dredging. (en)
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- dbr:Property_tax
- dbr:Mole_(architecture)
- dbr:Bathymetry
- dbr:Binger_Hermann
- dbr:Dawes_Act
- dbr:Richard_L._Neuberger
- dbr:United_States_Army_Corps_of_Engineers
- dbr:Vancouver,_Washington
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- dbr:Coastal_erosion
- dbr:The_Register-Guard
- dbr:The_World_(Coos_Bay)
- dbr:Siuslaw_National_Forest
- dbr:Siuslaw_River
- dbr:Causeway
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- dbr:Cushman,_Oregon
- dbc:Rivers_of_Lane_County,_Oregon
- dbr:Florence,_Oregon
- dbr:Breakwater_(structure)
- dbr:Pacific_Ocean
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- dbr:The_Oregon_Journal
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- dbr:Buoy
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- dbr:Shoal
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- dbr:File:1891_Survey_Siuslaw_River_Entrance.jpg
- dbr:File:Bald_eagle,_Siuslaw_North_Jetty,_2021,_by_Dan_Brau.jpg
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- dbr:File:Helicpter-Borne_Near-shore_Survey_System.png
- dbr:File:Sequential_interpretation_of_current_patterns.png
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- dbr:File:Siuslaw_River,_south_jetty.JPG
- dbr:File:Siuslaw_River_North_Jetty_2021,_by_Beck_Brau.png
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- dbr:File:Siuslaw_jetties_at_low_tide.jpg
- dbr:File:Siuslaw_jetty_construction.jpg
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- U. S. Army Engineer Waterways Experiment Station, Corps of Engineers (en)
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- Channel depth (en)
- North jetty (en)
- South jetty (en)
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- Aerial view of Siuslaw River and jetties (en)
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- In general, accretion of the shoreline took place adjacent to the jetties following their construction, both to the north and south. This accretion resulted mainly from the embayment formed between the jetty and the pre-jetty shoreline, the embayment becoming filled until the shoreline is straight and again in equilibrium with the waves such that there is a zero net sand drift. (en)
- The principal harbor works at the mouth of the river consist of: two quarrystone jetties 750 ft apart at their offshore extremities, the north jetty extending 3700 ft in a westerly direction along the edge of the north spit, and a south jetty extending 4300 ft in a westerly direction across the south spit; an entrance channel 18 ft deep and 300 ft wide from deep water in the ocean to a point 1500 ft upstream from the seaward end of the existing north jetty; a 5-mile-long channel 16 ft deep and 200 ft wide, with widening at the bends, extending from the entrance channel to Florence; a turning basin 16 ft deep, 400 ft wide, and 600 ft long, opposite the Siuslaw docks at Florence; and a channel 12 ft deep and 150 ft wide extending about 3 miles upstream from the turning basin... A reconstruction project is proposed for the south jetty which involves rebuilding the head and about 2250 ft of the trunk... (en)
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- The Siuslaw jetties (/saɪˈjuːslɔː/ sy-YOO-slaw) at Florence, Oregon, in the United States, are parallel rubble-mound structures at the entrance of the Siuslaw River, bounding the north and south banks and protecting the navigation channel. The jetties extend into the Pacific Ocean, with spur jetties designed to reduce breakers and shoaling across the sand bar. (en)
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- POINT(-124.13899993896 44.017398834229)
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