United States Geological Survey YearbookThe Survey - Geology |
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Page 2
... Potomac tidal river and estuary , Survey scientists have increased our understanding of chemical , physical , and biological proc- esses that occur in the river so that future development in the river basin can be quan- titatively ...
... Potomac tidal river and estuary , Survey scientists have increased our understanding of chemical , physical , and biological proc- esses that occur in the river so that future development in the river basin can be quan- titatively ...
Page 71
Geological Survey (U.S.). Potomac River Estuary Study Percentage of material supplied during 1980 and 1981 water ... tidal Potomac River and marginal embayments . This proc- ess has been so rapid that the Lincoln and Jefferson Memorials ...
Geological Survey (U.S.). Potomac River Estuary Study Percentage of material supplied during 1980 and 1981 water ... tidal Potomac River and marginal embayments . This proc- ess has been so rapid that the Lincoln and Jefferson Memorials ...
Page 72
... tidal Potomac River and Estuary . [ Negative numbers in parentheses indicate a net outflow of dissolved silica from the transition zone . This is included in the material trapped in the estuary and is , therefore , not subtracted from ...
... tidal Potomac River and Estuary . [ Negative numbers in parentheses indicate a net outflow of dissolved silica from the transition zone . This is included in the material trapped in the estuary and is , therefore , not subtracted from ...
Page 73
... tidal Potomac River . Bottom - Dwelling Life Seasonal and spatial variability of bottom- dwelling animals was ... tidal river was partitioned into four zones : estuarine , transitional , tidal freshwater , and environmentally impacted ...
... tidal Potomac River . Bottom - Dwelling Life Seasonal and spatial variability of bottom- dwelling animals was ... tidal river was partitioned into four zones : estuarine , transitional , tidal freshwater , and environmentally impacted ...
Page 74
... tidal river near Washington , D.C. , during 1980 averaged 16,280 cubic feet per second , 43 percent above normal ... Potomac River from the head - of- tide in the northwestern quadrant of Wash- ington , D.C. , to Indian Head , Maryland ...
... tidal river near Washington , D.C. , during 1980 averaged 16,280 cubic feet per second , 43 percent above normal ... Potomac River from the head - of- tide in the northwestern quadrant of Wash- ington , D.C. , to Indian Head , Maryland ...
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activity Administration Alaska Apalachicola Apalachicola River Assessment Basin California cartographic Cascade volcanoes City Commission conodont conterminous United Cooperative data base Denver Department of Public deposits digital data digital line graphs Earth Resources Observation earth science earthquakes Energy Environmental eruptions evaluation faults Federal agencies Federal Bldg fiscal year 1982 Flood Control Geologic Division Geologist ground water ground-water hazards hydrologic Investigations Irrigation kaolinite Landsat Long Valley Caldera magma major Mammoth Lakes Menlo Park ment million mineral resources Minerals Management Service monitoring National Center National Mapping Division Nevada oil and gas percent Planning Planning w potential Potomac River produced Puerto Rico quadrangle radiometer Regional Research Resources Observation Systems resurgent dome rocks sediments seismic square miles STOP studies Survey's techniques tidal Potomac River tidal river tion topographic Transportation U.S. Geological Survey volcanic Water Conservation District Water District water levels Water Management Water Resources Western zone Δ Δ