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Nitrate Source Tracking: Combining Isotopic, Microbial, and Chemical Tracers in a Mixed Land-Use Watershed

The overall objective of this project is to develop, test, and   improve current methods to trace sources of stream nitrate by using   a combination of isotopic, microbial, and chemical indicators on   Spring Creek, a mixed land-use watershed located in central   Pennsylvania. Specific project objectives include:  1) Identify isotopic, chemical, and microbial characteristics of   each major nitrate input (tributary inputs and major nitrate   sources) to the Spring Creek watershed.  2) Develop relationships between 15N in nitrate and sources of E.   coli bacteria to help distinguish between human and animal sources   of nitrate.  3) Characterize variations of isotopic, chemical, and microbial   tracers in time and space.      a) Hydrological variation: baseflow and stormflow      b) Seasonal variation: growing season versus dormant season      c) Spatial variation: downstream changes in tracer signatures  4) Determine the most important sources of nitrate in the Spring   Creek watershed.    (nitrates); (bacteria); (stable isotopes); (hydrology);   (monitoring); (Pennsylvania); (microbial source tracking); (MST);   (bacterial source tracking); (BST)

Status
In progress
Type
Project
Start Date
End Date
Researchers
David Russell DeWallePrincipal Investigator
Associated with 1 projects
Michael A. ArthurResearcher
Associated with 1 projects
Chitrita DebRoyResearcher
Associated with 1 projects
Agencies

Funding 1 projects for a total of $36,000.00

Funding 15 projects for a total of $273,800.00
Scope of Study
Field Investigation
Laboratory Investigation
Impact of Pollutants
Toxic Organics
State Province
Pennsylvania
Resource Being Monitored
Human Health
Beneficial Use Impairment Assessments
Restrictions on Drinking Water Consumption or Taste and Odour Problems
Annex Numbers
Pollution from Contaminated Groundwater
Pollution from Non-Point Sources
Remedial Action Plans and Lakewide Management Plans
General
Monitoring
Annex
  • Annex Numbers
    Annex Numbers
    Pollution from Contaminated Groundwater
    Pollution from Non-Point Sources
    Remedial Action Plans and Lakewide Management Plans
  • Annex 17

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