Town Brook Watershed_ New York PSWMRUs contribution to CEAP-WAS

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Town Brook Watershed_ New York PSWMRUs contribution to CEAP-WAS Powered By Docstoc
					Town Brook/Cannonsville Reservoir Watersheds –
  A CEAP-WAS contribution

 Bil Gburek and friends
    Pasture Systems and Watershed Management
     Research Unit
    USDA-ARS
    University Park, PA

   CEAP-WAS Workshop
   Irving, TX; March 2005

                                               PSWMRU
    New York City water supply watersheds
   1,969 mi2
   8 million people
   1.3 billion gal daily
   2 main reservoir systems
     • east of Hudson –
       minimal ag problems
     • west of Hudson –
         forest and dairy
          agriculture
         P-related problems
         manure use/”disposal”
                                            PSWMRU
West-of-Hudson watersheds
         Cannonsville Reservoir problems
         • Phosphorus loss from dairy agriculture
           negatively impacts eutrophic status of
           reservoir
         • Erosion from corn land use and related
           P transport, previously unaddressed in
           whole-farm planning process, becoming
           of concern
         • Sustainability and economic viability of
           farm community affected by P
           management measures                  PSWMRU
                               BMP implementation and
CEAP-WAS                       evaluation typically at field scale...




while management is
at whole-farm scale...

      but water quantity and
      quality impacts are typically
      at watershed/basin scale
                                                              PSWMRU
 Research objectives – pre-CEAP origins

 Client-driven
  • WAC • Del Cty SWCD • NRCS
  • NYC-DEP    • NYS-DEC   • EPA

Contributing research groups
  • ARS (lead) • Cornell University
  • USGS       • NYC-DEP
  • NYS-DEC
                                          PSWMRU
 Research objectives – pre-CEAP origins
 Quantify P loss from dairy agriculture at field,
  farm, and watershed scales
 Evaluate efficacy of BMPs, individually and in
  combination
 Evaluate effectiveness of current BMP strategy
  in reducing P loss
 Develop new and/or improved strategies for
  BMP selection and siting
 Maintain sustainability and economic viability of
  farms
                                                      PSWMRU
                                    Town Brook outlet – 14.3 mi2
Monitoring data available            USGS since 1997
                                       flow; lowflow and event-scale
Cannonsville Watershed – 354 mi2       sediment and P species
 NYS-DEP since 1991                 forested sub-watershed
  flow; lowflow and event-scale
  sediment and P species




                           R-farm – first-order “watershed”
                           with phased BMP implementation
                            NYS-DEP since 1991
                              flow; lowflow and event-scale
                              sediment and P species
                                                              PSWMRU
 Research approach
 Field  landscape  farm  small watershed –
  Town Brook Watershed focus
  • representative of Cannonsville conditions
  • evaluation of BMPs singly or in combination
  • farmers’ management decisions and BMPs can be tied
    directly to P loss to the stream
 Modeling to extrapolate to Cannonsville scale
  • farm-scale modeling – IFSM (enterprise costs)
  • watershed-scale modeling – SWAT
     current levels of P loss
     incorporate and evaluate effects of BMPs
     optimization for BMP selection & placement
                                                    PSWMRU
Anticipated products
 Documented effectiveness of individual BMPs in
  reducing P loss – Catskill appropriate
 Watershed modeling incorporating impacts of
  BMPs considering source, transport, and BMP
  intervention processes –
  national applicability
 Methodology for effective
  and economic selection
  and siting of BMPs –
  national applicability

                                                   PSWMRU
Progress
 BMP effectiveness quantified (w/ pubs)
  • streambank fencing
  • cover crops
  • grass filter strips/riparian buffers
  • P-sorbing materials
 P source investigations (w/ pubs)
  • soil P-runoff P relationships
 P transport investigations (w/ pubs)
  • VSA characterization and impact
  • potential for subsurface transport
                                           PSWMRU
Progress (cont’d)
 BMP tool developed (JSWC)
   LEGEND


 Optimized BMPs at farm scale (ASAE)
        Streams

        Crop rotation


 Optimized BMPs at watershed scale (AWRA accepted)
        Contour strip crop

        Nutrient management plans

 Farm-scale BMPs – e.g., precision feeding and
        Riparian forest buffers


  improved forage utilization to reduce P imbalance;
  environmental and economic impacts
 Improved manure P model subroutines
 Role of channel processes in watershed-scale P
  transport dynamics
                                                   PSWMRU

				
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posted:5/11/2013
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