United States Geological Survey YearbookThe Survey, 1993 - Forest reserves |
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Page 37
... dipped abnormally south over the Plains area east of the Rocky Moun- tains . That stalled weather system , cou- pled with a high - pressure zone in the 37 A Atrazine 1993 flood Streamflow AMJJASON DJFMAMJJASON DJFMAMJJA 1991 1992.
... dipped abnormally south over the Plains area east of the Rocky Moun- tains . That stalled weather system , cou- pled with a high - pressure zone in the 37 A Atrazine 1993 flood Streamflow AMJJASON DJFMAMJJASON DJFMAMJJA 1991 1992.
Page 42
... high streamflows in 1993 would dilute the herbicides to lower - than - normal concentrations in the Mississippi ... plains ; effects of inundation on ground - water quality ; flood - discharge volume ; effects of reservoir storage on ...
... high streamflows in 1993 would dilute the herbicides to lower - than - normal concentrations in the Mississippi ... plains ; effects of inundation on ground - water quality ; flood - discharge volume ; effects of reservoir storage on ...
Page 32
... High Plains Aquifer The he High Plains aquifer underlies one of the major agricultural areas in the United States . About 20 percent of the irrigated land in the United States is in the High Plains , and nearly 30 percent of the ground ...
... High Plains Aquifer The he High Plains aquifer underlies one of the major agricultural areas in the United States . About 20 percent of the irrigated land in the United States is in the High Plains , and nearly 30 percent of the ground ...
Page 33
... High Plains aquifer in 1980 ( 3,250 million acre feet ) was in Nebraska . Water levels in the High Plains aquifer are monitored through an extensive observa- tion - well network . This network comprises many smaller networks of ...
... High Plains aquifer in 1980 ( 3,250 million acre feet ) was in Nebraska . Water levels in the High Plains aquifer are monitored through an extensive observa- tion - well network . This network comprises many smaller networks of ...
Page 34
... High Plains TEXAS Aquifer Boundary 33 ° 32 ° River River EXPLANATION Declines of over 50 feet Changes between -50 and +10 Rises of over 10 feet 0 50 ᅡ 0 Water - level change in the High Plains aquifer from 1980 to 1993 . midpoint of ...
... High Plains TEXAS Aquifer Boundary 33 ° 32 ° River River EXPLANATION Declines of over 50 feet Changes between -50 and +10 Rises of over 10 feet 0 50 ᅡ 0 Water - level change in the High Plains aquifer from 1980 to 1993 . midpoint of ...
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activities Administration aquifer areas assessment atmosphere atrazine Award Bureau California cartographic City City of w coal Colorado Commission contaminants cooperation in earth Coordination data base debris flows Denver Denver Federal Center Division earth sciences earthquake employees energy environment Federal agencies flood floodplain geographic information systems Geological Survey USGS global change ground water ground-water hazards High Plains hydrologic information systems Interior Internet Irrigation KILOMETERS Lake land locations Management District ment Mineral Resources Mississippi River models monitoring Municipal National Center Northridge earthquake Office Park pesticides Planning processes Regional Reston River Basin Scientific and technical sediment seismic Service Soil South Platte River spatial data studies technical cooperation Telephone 703 tion Transportation U.S. Forest Service U.S. Geological Survey United University users USGS USGS scientists Valley volcanoes Water Conservation District Water District water quality Water Resources water-quality