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National water summary 1988–89 — Hydrologic events and floods and droughts National water summary 1988–89 — Hydrologic events and floods and droughts
National Water Summary 1988-89 - Hydrologic Events and Floods and Droughts documents the occurrence in the United States, Puerto Rico, and the U.S. Virgin Islands of two types of extreme hydrologic events floods and droughts on the basis of analysis of stream-discharge data. This report details, for the first time, the areal extent of the most notable floods and droughts in each State...
By
Water Resources Mission Area, Pennsylvania Water Science Center, Oklahoma-Texas Water Science Center, Utah Water Science Center, Dakota Water Science Center, Central Midwest Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, Central Plains Water Science Center
National Water-Quality Assessment Program - The Central Nebraska Basins National Water-Quality Assessment Program - The Central Nebraska Basins
No abstract available.
Authors
T.L. Huntzinger
Herbicides in streams. Midwestern United States Herbicides in streams. Midwestern United States
Results from a 2-year study of 149 streams geographically distributed across the corn-producing region of 10 midwestern States show that detectable concentrations of herbicides persist year round in most streams. Some herbicides exceeded proposed maximum contaminant levels for drinking water for periods of several weeks to several months following application. Atrazine was the most...
Authors
Donald A. Goolsby, E. Michael Thurman, Dana W. Kolpin
Statistical comparison of selected chemical constituents in water from chemigation and conventional irrigation wells in Kansas, 1987 Statistical comparison of selected chemical constituents in water from chemigation and conventional irrigation wells in Kansas, 1987
No abstract available.
Authors
Charles A. Perry, Marc R. Anderson
A steady-state unsaturated-zone model to simulate pesticide transport A steady-state unsaturated-zone model to simulate pesticide transport
No abstract available.
Authors
A. T. Rutledge, J. O. Helgesen
Herbicides in surface waters of the midwestern United States: The effect of spring flush Herbicides in surface waters of the midwestern United States: The effect of spring flush
Approximately three-fourths of all preemergent herbicides used in the United States are applied to row crops over a 12-state area, called the "corn belt" (I). The application of these compounds may cause widespread degradation of water quality (2). Because herbicides are water soluble, there is the potential for leaching into groundwater and surface water (3, 4), as well as aerial...
Authors
E.M. Thurman, D. A. Goolsby, M. T. Meyer, D.W. Kolpin
U.S. Geological Survey Toxic Substances Hydrology Program; abstracts of the technical meeting, Monterey, California, March 11-15, 1991 U.S. Geological Survey Toxic Substances Hydrology Program; abstracts of the technical meeting, Monterey, California, March 11-15, 1991
No abstract available.
Authors
G. E. Mallard, D. A. Aronson
Major geohydrologic units in and adjacent to the Ozark Plateaus province, Missouri, Arkansas, Kansas and Oklahoma-Ozark confining unit Major geohydrologic units in and adjacent to the Ozark Plateaus province, Missouri, Arkansas, Kansas and Oklahoma-Ozark confining unit
No abstract available.
Authors
Jeffrey L. Imes
Simulated effects of climatic change on runoff and drought in the Delaware River Basin Simulated effects of climatic change on runoff and drought in the Delaware River Basin
Various projection of climatic change were applied to watershed models of the Delaware River basin. Simulations indicate that a warming could reduce annual runoff by as much as 25 percent if current precipitation patterns continue. Simulations indicate that the largest changes in basin drought are in response to relatively small changes in precipitation. Basin drought was less sensitive...
Authors
Mark A. Ayers, Gary D. Tasker, David M. Wolock, Gregory J. McCabe, Lauren E. Hay
Surface- and ground-water interaction and hydrologic budget of the Missouri River Valley aquifer between Yankton, South Dakota, and St. Louis, Missouri Surface- and ground-water interaction and hydrologic budget of the Missouri River Valley aquifer between Yankton, South Dakota, and St. Louis, Missouri
No abstract available.
Authors
E. R. Hedman, Donald G. Jorgensen