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00269$- and ports and along the inland waterways connecting San Francisco Bay with the ports of Stockton and Sacramento. The existing facilities in commercial navigation ports are shown in table 11. The San Francisco Bay complexes handled 46 percent of the total waterborne commerce, and the Los Angeles-Long Beach harbors about 33 percent, for a combined total of more than 75 percent of the regional total. The following tabulation summarizes the waterborne commerce by type for the California Region in 1965: Type 1,000 short tons Navigation This section pertains to both "commercial navigation" and "small boat facilities" on navigable waters. COMMERCIAL NAVIGATION International trade is an important element of the economy of the Pacific Southwest. All waterborne commerce in the area passes through the ports and facilities in the California Region. During the 5-year period beginning in 1962, exports almost doubled, and the imports increased more than 60 percent. Status - Commercial Navigation In 1965 the Region's ports and waterways handied more than 99 milion tons of waterborne commerce - about 8 percent of the total waterborne commerce of the United States. Major complexes are located in San Francisco Bay and Los Angeles-Long Beach harbors. Other facilities include the offshore petroleum terminals of the central and south coastal areas, the inland river ports of Stockton and Sacramento, Humboldt and Crescent City harbors in the north coastal area, and Port Hueneme and San Diego harbors in the south coastal area. Federal navigation projects have been constructed, or are authorized, at all of these harbors Foreign exports Foreign imports Coastwise shipments Coastwise receipts Internal shipments Internal receipts Total ...... 13,000 19,860 25,160 21,870 9,030 10,100 99,020 Petroleum and petroleum products comprised almost 70 percent of the total in 1965. The other four major commodities were metals, chemicals, lumber, and agricultural products. However, every commodity group is represented in the Region's waterborne commerce. In only one instance has reservoir storage been provided to assure adequate flow to maintain depth Table I I.-Existing port facilities for commercial navigation Basins and Channels anchorage areas Depth Depth range Length range Area (feet) (miles) (feet) (acres) 5-6 85 10-50 1,270 8-50 263 Break~ water & jetties Terminal facilities (miles) Berths (No.) Cargo- handling area (acres) 24 3,570 313 73