United States Geological Survey YearbookU.S. Geological Survey, 1994 - Geology |
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Page
... contaminants in the Mississippi River ( see p . 52 ) to establishing a database of mine sites in the U.S. - Mexico border region ( see p . 47 ) , the USGS is actively engaged in under- standing the conditions and functions of ...
... contaminants in the Mississippi River ( see p . 52 ) to establishing a database of mine sites in the U.S. - Mexico border region ( see p . 47 ) , the USGS is actively engaged in under- standing the conditions and functions of ...
Page 39
... Contaminants enter the estuary in municipal and industrial sewage and urban and agricul- tural runoff . Introduced exotic species con- tinue to change the bay's biota by altering its For more information on the Retsof Salt Mine project ...
... Contaminants enter the estuary in municipal and industrial sewage and urban and agricul- tural runoff . Introduced exotic species con- tinue to change the bay's biota by altering its For more information on the Retsof Salt Mine project ...
Page 40
... contaminant levels as a result of dredging and spoils disposal . Conflicts among the many uses of the bay / delta system have led resource managers and regulators , elected officials , and the pub- lic to recognize the need for credible ...
... contaminant levels as a result of dredging and spoils disposal . Conflicts among the many uses of the bay / delta system have led resource managers and regulators , elected officials , and the pub- lic to recognize the need for credible ...
Page 41
... contaminants are being transported through the delta into the bay . The mechanisms of dis- solved contaminant and sediment transport in the bay must be understood in order to esti- mate organism exposure and evaluate mitiga- tion ...
... contaminants are being transported through the delta into the bay . The mechanisms of dis- solved contaminant and sediment transport in the bay must be understood in order to esti- mate organism exposure and evaluate mitiga- tion ...
Page 42
... contaminants and changes in wetland - habitat values . The USGS is partici- pating in the restoration of a 350 - acre tract of land on San Pablo Bay by monitoring the development of tidal channels and flow pat- terns , changes in ...
... contaminants and changes in wetland - habitat values . The USGS is partici- pating in the restoration of a 350 - acre tract of land on San Pablo Bay by monitoring the development of tidal channels and flow pat- terns , changes in ...
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activities Administration agencies agricultural aquifer areas Assessment atmosphere Award Bureau Center City City of w coal Colorado comet Commission concentrations contaminant cooperation in earth County Water data sets database debris flows discharge distribution Division DSDL earth science environment Environmental Federal flood floodplain geographic information systems Geological Survey USGS GeoMedia geospatial data global ground-water hazards High Plains hydrologic impact Internet Irrigation KILOMETERS Lake land levees locations maps ment methane Mineral Resources Mississippi River monitoring Mount Rainier Mount Zirkel Wilderness Municipal National natural gas nitrate Northridge earthquake NSDI pesticides petroleum Planning region Reston River Basin Scientific and technical scientists sediment seismic Service South Platte River spatial data studies technical cooperation Telephone tion Transportation U.S. Geological Survey U.S.-Mexico border University users USGS Valley videoconferencing Volunteer Water Conservation District Water District Water Resources