Morro Bay is a natural embayment with an artificial harbor constructed by the U.S. Army Corps of Engineers. It is the only all-weather small craft commercial and recreational harbor between Santa Barbara and Monterey. Morro Rock was originally surrounded by water, but the Army built a large artificial breakwater and road across the north end of the harbor, linking Morro Rock and the mainland. Some of the rock used for this and for the artificial breakwaters was quarried from Morro Rock itself. Other rock was imported by barge from Catalina Island. The bay extends inland and parallels the shore for a distance of about 4 miles south of its entrance at Morro Rock.
Only relatively small craft are capable of passing the harbor channel. A large natural sandspit, augmented by breakwaters, protects the harbor from the Pacific Ocean to the west. At its northern end, remains of a bridge that used to connect the shore with the sandspit can be seen. Morro Bay Harbor’s channel silts up and must be dredged every three to four years. Previously, the Shark Inlet connected the back bay to the ocean. Some have proposed reopening it to slow the sedimentation that is filling up the bay. There has also been work on reducing erosion in the Chorro Creek watershed to reduce the amount of sediment coming into the bay to form bottom layers of bay mud. Chorro Creek is the bay’s largest tributary. It forms an estuary in the back bay between Morro Bay and Los Osos. The second largest tributary, and the only other significant one, is Los Osos Creek, which empties into the far south end of the back bay.
|»||Winter :: sunny days, clear nights
61, low 40
|»||Spring :: Breezy days, cool nights
63, low 48
|»||Summer :: foggy mornings and nights
High 67, low 54
|»||Fall :: gentle days, cool nights
High 71, low 49
Mariners are strongly urged to seek local advice prior to making use of the channel, especially when whitecaps or wind-blown water is evident or a small craft advisory is in effect, which is very often. The United States Coast Guard regards the harbor as one of the most dangerous in the entire nation, while others put it in the top six on the West Coast of the United States. In 1995, the Army Corps of Engineering deepened and expanded the channel to improve safety. From 1979 to 1987, 21 lives were lost in boating accidents alone. However, many additional deaths have resulted from sightseers and fisherman being swept off the rocks of the breakwater surrounding Morro Rock. They often approach too closely to the waves and are caught off guard when a big wave set comes in. The slippery and jagged rocks only add to the danger. Public access to the breakwater has been revoked and those who venture beyond the signs do so at their own peril. Coast Guard Station Morro Bay operates two small vessels. Limited transient vessel services are available. Yachtsmen may wish to contact the Morro Bay Yacht Club. A public boat launch ramp is available at the far south end of the Embarcadero.
During World War II, there was a U.S. Navy base on the north side of Morro Rock where sailors were trained to operate LCVPs. The breakwater on the southwest side of the Rock was built in 1944-45 to protect the LCVPs entering and leaving the harbor. Soldiers from Camp San Luis Obispo would come to Morro Bay and practice loading into the LCVPs. Many of those men were at Normandy on D-Day.
Morro Bay Chamber of Commerce
695 Harbor Street
Morro Bay, CA
Phone: (805) 772-4467