Applications of economic theory to utilization of land and water resources by both private and public sectors. Applicable laws, conservation, land and water use planning, trade off between public and private land use, externalities in resource use, and interrelationships between human resources and land are considered.  Benefit-cost analysis of public water development programs; economic analysis of selected water allocation and valuation issues for surface and groundwater, brackish and treated wastewater, pollution, pricing. Appropriate research tools and decision criteria are discussed.