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Prepared by the Falls and Jordan Lake Watershed Oversight Committees John Huisman - DWQ & Julie Henshaw - DSWC
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Reports Produced Through Joint Effort Neuse technicians Producers LACs WOCs Local SWCDs DSWC NRCS CES NCDA & CS NASS NLEW Committee Pasture points committee PTAC NCSU DWQ
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Falls Lake 770 sq/mile watershed Covers 6 Counties NMS Effective : 2011 Jordan Lake 1,686 sq/mile watershed Covers 10 Counties NMS Effective : 2009
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Falls Agriculture Rule Overview (15A NCAC 02b.0280) Rule Effective: January 2011 Collective compliance similar to Neuse & Tar-Pam Affects All Agriculture – Cropland & Pastureland Stage I 2011-2020: 20% N / 40% P Stage II 2021-2035: 40% N / 77% P 2006 Baseline WOC & LACs Develop accounting tools Assist with implementation
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Jordan Agriculture Rule Overview (15A NCAC 02b.0264) Rule effective: August 2009 Nitrogen (N) & Phosphorus (P) Reduction Goals 1997-2001 Baseline Collective compliance by: Aug. 2015-2018 WOC formed - LACs not needed at this time NP Upper New Hope35%5% Lower New Hope0% Haw8%5%
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Watershed Oversight Committee (WOC) Representatives Division of Soil and Water Conservation US Department of Agriculture Natural Resources Conservation Service NC Department of Agriculture & Consumer Services NC Cooperative Extension Division of Water Quality Environmental (3) General Farming Pasture-Based Livestock Equine Livestock Cropland Farming Scientific Community
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EMC Approved Accounting Methods 1. Cropland Nitrogen Loss – NLEW Tool 2. Phosphorus Loss – Qualitative Indicators 3. Pastureland Nitrogen Loss - Point System
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Cropland Nitrogen Accounting N-Loss Estimation Worksheet (NLEW) Empirical Spreadsheet-based Model Developed by DWQ, NRCS, and NCSU Estimates Nitrogen Loss from Cropland Ag Compare baseline loss to current crop year Loss Estimates at County Scale Data Collected Annually Number of Acres / Type of Crop Fertilization Rates BMPs implemented
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Falls Estimated Cropland N Loss Reductions County2006 Baseline N Loss (lbs) CY2011 N Loss (lbs) CY2011 N Loss (%) Durham135,902 98,35428% Franklin11,717 6,95341% Granville127,704 81,25236% Orange347,402 258,16526% Person484,123 303,98537% Wake49,932 45,2329% Total1,156,780 793,94131%
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Phosphorus Accounting Method PTAC Revised Tar-Pam Method EMC approved Phosphorus tracking method in 2005 Qualitative Indicator Trends 9 indicators used to qualitatively assess risk of P loss Baseline vs. Current Crop Year Indicators characterize changes in land use and management to assess P-loss risk compared against the baseline year
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Phosphorus Loss Tracking - Falls Lake Watershed 2011 P Loss Indicators ParameterUnitsBaseline 2006CY2011 Percent '06- '11 change CY2011 P Loss Risk +/- Cropland acres 10,8347,545-30% - Cropland conversion (to grass & trees) acres 1,5271,82219% - CRP / WRP (cumulative) acres 000% Conservation tillage acres 26,78718,142-32% + Vegetated buffers (cumulative) acres 52,13954,3904% - Scavenger cropacres 000% Tobaccoacres 3,2882,782-15% - Animal waste Plbs of P/ yr586,612536,009-9% - Soil test P medianmg/kg7774-4% -
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Falls Pasture Points Accounting N “Point” Credit Values for Pasture BMPs Comparative analysis for Falls included in future report Reason: Pasture data compiled in Census of Agriculture 5yr Reports Most recent = 2007 (Falls Baseline is 2006) 2012 Data will be available in 2014
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Jordan Estimated Cropland N Loss Reductions: Lower New Hope Subwatershed County1997-2001 Baseline N Loss (lb) 2010 N Loss (lbs) N Loss Reduction (%) Chatham 57,85333,82942% Wake 38,27214,43362% Total 96,12548,26250%
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Jordan Estimated Cropland N Loss Reductions: Upper New Hope Subwatershed County1997-2001 Baseline N Loss (lbs) 2010 N Loss (lbs) N Loss Reduction (%) Chatham 43,82622,80748% Durham 39,04311,72670% Orange 64,59444,31031% Wake 9,6493,62462% Total 157,11282,46748%
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Jordan Estimated Cropland N Loss Reductions: Haw Subwatershed County1997-2001 Baseline N Loss (lbs) 2010 N Loss (lbs) N Loss Reduction (%) Alamance697,924 536,07523% Caswell131,87588,20533% Chatham220,152172,21022% Guilford1,393,207829,29040% Orange235,230152,64835% Rockingham169,080134,75220% Total2,847,4681,913,18033%
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Phosphorus Loss Tracking - Jordan Lake Watershed 2010 P Loss Indicators ParameterUnits Baseline (average 1997-2001)2010 Percent change 2010 P Loss Risk +/- Cropland acres 87,38498,57313% + Cropland conversion (to grass & trees) acres 1,3591,82234% - CRP / WRP (cumulative) acres Federal data not able to be reported986.9N/A Conservation tillage acres 1,99717,635783%- Vegetated buffers (cumulative) acres 54,21252,831-3%+ Scavenger cropacres 000% Tobaccoacres 7,6674,647-39%- Animal waste Plbs of P/ yr 9,809,8025,608,723-43%- Soil test P medianmg/kg 7271-1%-
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Pasture Nitrogen Accounting Method Subcommittee Revised Tar-Pam Method N “Point” Credit Values for BMPs BMPs: Buffer & Exclusion Fencing County scale approach Limited Data 5-yr Report (Census of Agriculture)
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BMPPoints Exclusion Fencing30 20’ Buffer and Exclusion Fencing50 30’ Buffer and Exclusion Fencing55 50’ Buffer and Exclusion Fencing60 100’ Buffer and Exclusion Fencing65 Pasture Nitrogen Accounting Method
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Jordan Summary table SubwatershedRequired nitrogen reductions 2007 nitrogen point reductions from pastureland Lower New HopeNo increase in nitrogen (0 points) 0 points Upper New Hope35% nitrogen (35 points)0.3 points Haw8% nitrogen (8 points)5.0 points
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Looking forward Funding for staff is critical, without which tasks would fall to the voluntary LACs (Falls) or WOC (Jordan) for data compilation; staff also needed for BMP installation WOCs will continue working with LACs and farmers to implement the rules and adopt nutrient-reduction BMPs WOCs will continue to review data from all studies to incorporate into the process WOC members are working with DWQ on trading nutrient offsets Efforts underway to complete next annual report in both watersheds
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