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f\.) "".. ..,,J 0) surface~water. ground-water. soil. bottom-sediment, and various types oJ; biological samples. Mineralogic analyses were done on drill co:res and some soil samples. The data are being compiled for release in a data report that is scheduled for publication in 1993. An interpretative report describing the results of the study is scheduled for publication in 1994. NEVADA Salt Load Estimates from Public Lands-- The proj~ct. conducted with Bureau of Land Management support. was described in detail in the FY 1989 report to the Advisory Council. The primary objective of the project is to collect hydrologic and water-quality information that will help identify source areas for saline discharge 'and result in improved estimates of salt loading from public lands. To achieve this objective. four gaging stations were establi$hed. The stations are located in the Muddy River. Meadow Valley Wash, Pahranagat Wash, and Las Vegas Wash basins above major urban and agricultural developments. Streamflow and specific-conductance data are collected daily. and water-quality samples are collected monthlYI with supplemental sampling during storm runoff. Laboratory anal yses incl ude dissol ved sol ids and suspended-sediment concentrations. These data. in conjunction with data from existing monitor~ng stations at the mouths of the major rivers, will provide the information needed to estimate the magnitude of salt contrib1.\tion from public lands. thus forming a basis for the development of rational salinity-control plans. After five years of data collection, estimated water and salt budgets will be prepared for the basins, using the data from the stations mentioned above and reconnaissance samples from ephemeral streams, springs. and wells in the basins. The five-year budgets will include an estimate of contributions of salt in surface water to the respective drainage basins. Regional correlation techniques will be used to extend the five-year budgets to long~term estimates. Basin data are published annually in the USGS annual water-data report for Nevada, and a summary report will be prepared present~ng the salt budgets. New Mexico In addition to the activities related to the hydrologic data program (Attachment 1). the New Mexico District conducted two interpretative studies in fiscal year 1992: , 0;' ! - '" ",-'. '" ..";~""",-,,.