United States Geological Survey YearbookThe Survey, 1985 - Geology |
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Page 1
... irrigation drainage water in the western San Joaquin Valley . The problem of water - quality deterioration as a result of irrigation drainage is a potential concern in other areas of the country as well . The solution to this problem ...
... irrigation drainage water in the western San Joaquin Valley . The problem of water - quality deterioration as a result of irrigation drainage is a potential concern in other areas of the country as well . The solution to this problem ...
Page 5
... Irrigated fields , central California . Figure 1. Idealized graph showing the relationship between variations in intake of chemical constituents and plant and animal health . RANGE OF DEFICIENCY DISEASES & DEATH INCREASING INTAKE OF ...
... Irrigated fields , central California . Figure 1. Idealized graph showing the relationship between variations in intake of chemical constituents and plant and animal health . RANGE OF DEFICIENCY DISEASES & DEATH INCREASING INTAKE OF ...
Page 8
... irrigated agriculture and water control projects in the valley attempted to flush salt from the soils , but a near- surface clay caused waterlogging and salt buildup at the land surface that eventually damaged crops . This buildup of ...
... irrigated agriculture and water control projects in the valley attempted to flush salt from the soils , but a near- surface clay caused waterlogging and salt buildup at the land surface that eventually damaged crops . This buildup of ...
Page 44
... irrigated farm- lands , especially in semiarid lands in the West and Southwest , by irrigation return flows . Phosphorus concentrations declined in the Great Lakes and Upper Mississippi regions , possibly due to major phosphorus ...
... irrigated farm- lands , especially in semiarid lands in the West and Southwest , by irrigation return flows . Phosphorus concentrations declined in the Great Lakes and Upper Mississippi regions , possibly due to major phosphorus ...
Page 47
... irrigation of crops , that have been mapped , and for which an understanding of the flow system already exists ; 2. Each activity will be clustered into study units that are widely scattered around the Nation and will in aggregate ...
... irrigation of crops , that have been mapped , and for which an understanding of the flow system already exists ; 2. Each activity will be clustered into study units that are widely scattered around the Nation and will in aggregate ...
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activities Administration Alaska aquifer system areas assessment Atlantic Coastal Plain Basin boundary Bureau California cartographic Central chemical chemical elements Chief City City of w Colorado Commission contain cooperative Coordination County cover mapping crust dams data base Denver Department of Public deposits Division earth science earthquake Energy Environmental feet fiscal year 1985 Flood Franciscan assemblage geologic mapping Geologist geophysical ground water ground-water hazards hydrologic image maps Information Systems investigations irrigation Lake land cover Landsat landslide major manganese mapping projects miles Mineral Resources mitigation National Center National Mapping North ocean Office oil and gas photographs Planning potential quadrangle Raton Basin remote sensing River rocks San Joaquin Valley sand blows sediment sedimentary seismic selenium Service slope soil sources Stop studies surface tion topographic Transportation U.S. Geological Survey United USGS Valley volcano Water Conservation District Water District water quality Water Resources water-quality Wildlife zone