Major Obstacles to Harbor Deepening (Cont'd) 



Harbors 



PACIFIC COAST 



Columbia River Entrance 



Columbia and Lower Willamette 

 Rivers 



Coos Bay 



Yaquina Bay 



Skipanon Channel 



Puget Sound Harbors (Bellingham, 

 Anacortes, Everett, Seattle, 

 Tacoma, Olympia and Port Angeles 



Grays Harbor 



San Francisco Harbor 



Richmond Harbor 



San Pablo Bay and Mare Island 



Straits 



Oakland Harbor 



Redwood City Harbor 



Humboldt Harbor and Bay 



San Francisco Bay to Stockton . . . 



Sacramento River 



Los Angeles-Long Beach 



San Diego Harbor 



GREAT LAKES 



Two Harbors 



Silver Bay 



Taconite Harbor 



Milwaukee Harbor 



Chicago Harbor 



Calumet Harbor 



Indiana Harbor 



Burns Waterway Harbor 



Buffington Harbor 



Authorized 

 Depth' 



Major Reloca- 

 tions and 

 Dislocations^ 



Rock and/or 



Continental 



Shelf^ 



Spoil 

 Disposal^ 



Ecology 



(Beginning depth of problem-in feet) 



48 



40 

 30-40 

 30-40 



30 



48 



40-45 

 40 

 40 

 35 



40 

 30-40 

 20-40 



50 



48 



40 



35 



30-40 



35 



485,6 



40S<6 

 405-6 



405.6 



Depths in Puget Sound range from 200-900 feet. No serious 

 obstacles to deepening appear to be forthcoming. 



30 



35-55 

 30-45 



30-45 



35 



30 

 26-40 



35-45 



30 

 35-40 

 20-40 



28 

 30 

 30 



27 



28 



27 



27 

 27 

 26 



45 



100 

 30-85 



45-50 

 35-100 

 35-100 

 26-30 



40-55 

 35-50 



40 

 30 



30 



200-300 

 36-300 



100-150 



300 

 150-300 



28 

 30 

 30 



40 

 40 



40 

 40 

 40 



45 



35-55 

 30-45 



30-45 

 35 

 30 



40-50 



28 



30 



26 



30' & 

 45* 



35' & 



40-50* 



35* 



27'' & 



40^ 

 28'' & 



40' 

 27'' & 



40' 

 27'' & 



40' 



40' 

 26' & 



40' 



III-168 



