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<br />,~ <br /> <br />_''''4 <br />~ <br /> <br />...-I <br /> <br />.....) <br /> <br />Wildlife <br /> <br />l.-, <br /> <br />Wildlife monitoring and evaluation will concentrate on measurement of changes <br /> <br />in wetland and wildlife habitat. Pre-and post-program aerial and ground <br /> <br />photography will be utilized to the extent they are ,wailab1e. United States <br /> <br />F ish and Wildlife Service (USFWS) 1980 Habitat Evaluation Procedure (HEP) <br /> <br />analysis and vegetative transects will be made. Habitat types will be mapped <br /> <br />on a sample of agricultural units prior to installation of irrigation <br /> <br />measures to determine present habi tat quality. Habitat types will be remapped <br /> <br />on these agricultural units following installation of measures to determine <br /> <br />the amount of change. <br /> <br />Changes in habitat quantity and quality will be evaluated relative to their <br /> <br />significance to wildlife populations. The change in a majority of the cases <br /> <br />will be cumulative over a number of years, so a 10ng-'term program is needed. <br /> <br />Monitoring of wetlands will be correlated with monitoring of irrigation, and <br /> <br />such data as land use and land use changes, ground water levels, and soil <br /> <br />salinity are examples of common information that could be collected. <br /> <br />Econood cs <br /> <br />Treatment of irrigated land to reduce salinity levels causes economic effects <br /> <br />to users of the land, to residents of the region, and to the nation in both <br /> <br />the short and long term. Onfarm economic effects can be estimated by <br /> <br />measuring change in annual net farm income. <br /> <br />Primary data collected by case <br /> <br />study is a means of measuring change in annual net fa.rm income, changed land <br /> <br />values, and social impacts. Case studies can be used. to identify production <br /> <br />inputs and outputs with and without treatment. Analysis of measured change <br /> <br />in production inputs and outputs can be used to determine impacts on economic <br /> <br />return to land, management, and family labor and estimate change in net farm <br /> <br />income before taxes. An input-output model will be run at 3-year intervals <br /> <br />to determine changes or impacts in monetary terms for the overall basin <br /> <br />3 <br />