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Secondary impacts that cquld potentially develop from an intensifica- tion of crop production could be the effects of any increased use of fertilizers and biocides. In recent years the effects of these agents as they pass through the delicate ecosystem have been the object of r,reat concern. However, the relative importance of this aspect of agricultural practice, either singly or cumulatively, can be only speculative. No sir,nificao.t problems from saline and alkaline soi Is are expected to develop from sustained irrigation on about 70 percent of the irrigable land. These lands, although irrigated in the past under short-water- supply conditions, have remained free of harmful accumulati'ln of salts and alkali. Irrip,able lands having moderately saline soils make up ahout 30 percent of the total irrip,able area. Since the moderately saline soils have been irrip,ated for many years, a balance has appsrently been reached between the accumulated salts and the water supply. With the projec t in operation, this balance is expec ted to be maintained. Sustained irrigation may increase the salinity of return water; however, since water quality is expected to be slightly improved and the principal change in the irrigation practices resulting from the project will be to distribute the water deliveries more evenly throup,hout the irriga- tion season, any increase may not be significant. 3. Recreation Development. The acquisition of water for the maintenance of a permanent pool, together with storage of water for irrigation, will permit the development of a variety of quality, water-oriented recreational activities and the opportunity for fisheries development. With the development of recreation areas and IV-4 . .