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I I I I I I I I I I I I I I I I I I I 003U24 species throughout the State will be closely monitored but no major problems are anticipated. If local water supplies should run short, such species would be moved or water supplied arti- ficially. If the balance of the water year is normal, no problems are anticipated other than the anadromous fishery losses sustained before February 1. If a second dry year should occur, one serious effect on fish could be from the aftermath of increased overgrazing of rangeland and forest fires, which cause streams to carry a subsequent'high sediment load. All stream fisheries would be reduced substantially in subsequent years due to very greatly reduced spawning, loss of young fish, and reduced fish stocking programs. Deteriorated habitat conditions from poor production of grass, forbes, and browse species plus increased fires and overgrazing would cause losses of some wildlife species. Reser- voir fish populations would be reduced in proportion to reduction in lake surface areas as reserviors are drawn down. Fish in natural high mountain lakes would not be greatly affected. Major problems in desert wildlife survival would continue. Water Quality Quality of water is adversely affected in dry years by increased mineral content and by salt water intrusion in estu- aries. Sea Water Intrusion into Sacramento-San Joaquin Delta - Outflow of fresh water from the rivers which are tributary to the Sacramento-San Joaquin Delta and releases from federal and state reservoirs serve to repel intrusion of salinity from the ocean into the Delta. Salinity protection is needed for fish, wildlife, agricultural, municipal, and industrial uses. An outflow index of about 6000 cfs (approximately 195 cubic metres per second) is required to provide satisfactory water quality for both state and federal water project diversions and Delta needs. This outflow will satisfy the requirements under the State Water Resources Control Board's Decision 1379, which governs the operations of the State Water Project. This outflow index will be sustained by releases from reservoir storage if necessary. Stream Water Quality - Our records indicate that dissolved mineral concentrations in the major streams flowing to the Central Valley and coastal valleys generally increase as flows are reduced. The concentration of constituents in these streams can be expected to show a 10 to 50 percent increase. Quality in streams immediately below storage reservoirs will not change appreciably from other years. The effect of these quality changes will be so small that most agricultural or urban users will not be able to recognize the poorer quality. -21-