San Joaquin, a river of California, which rises in the Sierra Nevada mountains, in Fresno co., flows S. W. to the W. part of the county, and thence N. W. through Fresno, Merced, Stanislaus, and San Joaquin counties, and uniting with the Sacramento empties into Suisun bay, which through San Pablo and San Francisco bays communicates with the Pacific ocean. Tulare lake discharges into it at high water, and the river was formerly considered to rise in it. Its entire length is about 350 m. It is navigable at all seasons by vessels of from 150 to 250 tons to Stockton, about 50 m, above its mouth; in winter and spring steamers ascend nearly 200 m. further. It receives numerous tributaries from the Sierra Nevada, the chief of which are the Fresno, Mariposa, Merced, Tuolumne, Stanislaus, and Calaveras. Its valley is noted for its fertility, producing great quantities of wheat and barley.
San Joaquin, a central county of California, intersected by the San Joaquin river, which here receives the Mokelumne, and bounded N. by the Calaveras and S. E. by the Stanislaus, tributaries of the San Joaquin; area, 1,452 sq. m.; pop. in 1870, 21,050, of whom 1,629 were Chinese. It lies between the foot hills of the Sierra Nevada and Coast ranges, but the surface is generally level, and a large portion of it treeless. Part of the extensive tract of tule marsh in the northwest has been reclaimed. The main line and Visalia division of the Central Pacific railroad and the Stockton and Cop-peropolis and Stockton and Visalia railroads traverse it. The chief productions in 1870 were 2,360,925 bushels of wheat, 37,350 of Indian corn, 1,027,016 of barley, 21,165 gallons of wine, 86,760 lbs. of wool, 292,060 of butter, 25,111 of cheese, and 41,214 tons of hay. There were 14,139 horses, 6,999 milch cows, 14,373 other cattle, 79,889 sheep, and 27,937 swine; 3 manufactories of agricultural implements, 6 of carriages and wagons, 2 of iron castings, 3 of machinery, 13 of saddlery and harness, 3 breweries, 1 tannery, and 2 flour mills.