General Information The Pittsburg Marina is a 575 slip municipal marina, located at the confluence of the Sacramento and San Joaquin Rivers.  Often called the “Gateway to the Delta”.  This strategic location offers boaters easy access to the upper delta region and to the San Francisco Bay.  Just a few yards from open water the Pittsburg Marina offers a quick get-a- way as well as a safe haven for those caught in the perennial delta winds, and rough water.