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Main Title Hydrogeologic framework, ground-water geochemistry, and assessment of nitrogen yield from base flow in two agricultural watersheds, Kent County Maryland
Author Bachman, L. Joseph.
Other Authors
Author Title of a Work
Bachman, L. Joseph.
Krantz, David E.
Bo hlke, Johnkarl.
CORP Author Geological Survey, Reston, VA.;National Risk Management Research Lab., Cincinnati, OH.
Publisher U.S. Environmental Protection Agency, National Risk Management Research Laboratory,
Year Published 2002
Report Number EPA/600/R-02/008
Stock Number PB2003-103046
OCLC Number 50879586
Subjects Groundwater--Pollution--Maryland--Kent County ; Hydrogeology--Maryland
Additional Subjects Hydrogeology ; Ground water ; Geochemistry ; Nitrogen ; Watersheds ; Base flow ; Water quality ; Stratigraphy ; Aquatic habitats ; Streams ; Nutrients ; Estuaries ; Stream flow ; Maryland ; Kent County(Maryland)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAD  EPA/600/R-02-008 Region 1 Library/Boston,MA 03/21/2003
EJAD  EPA 600/R-02-008 Region 3 Library/Philadelphia, PA 11/22/2002
EJBD  EPA 600-R-02-008 Headquarters Library/Washington,DC 10/03/2012
EJDD  EPA/600/R-02/008 Env Science Center Library/Ft Meade,MD 02/20/2004
ELBD ARCHIVE EPA 600-R-02-008 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 600-R-02-008 AWBERC Library/Cincinnati,OH 06/22/2007
EMBD  EPA/600/R-02/008 NRMRL/GWERD Library/Ada,OK 12/27/2002
ESAD  EPA 600-R-02-008 2 copies Region 10 Library/Seattle,WA 06/02/2016
NTIS  PB2003-103046 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xii, 78 p. : col. ill., col. maps ; 28 cm.
Hydrostratigraphic and geochemical data collected in two adjacent watersheds on the Delmarva Peninsula, in Kent County, Maryland, indicate that shallow subsurface stratigraphy is an important factor that affects the concentrations of nitrogen in ground water discharging as stream base flow. The flux of nitrogen from shallow aquifers can contribute substantially to the eutrophication of streams and estuaries, degrading water quality and aquatic habitats. The information presented in this report includes a hydrostratigraphic framework for the Locust Grove study area, analyses and interpretation of ground-water chemistry, and an analysis of nutrient yields from stream base flow. An understanding of the processes by which ground-water nitrogen discharges to streams is important for optimal management of nutrients in watersheds in which ground-water discharge is an appreciable percentage of total streamflow. The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency (USEPA), collected and analyzed hydrostratigraphic and geochemical data in support of ground-water flow modeling by the USEPA.
"IAG #DW14937941." "January 2002."