NeuseTarAgReports 2017-11-08

Department of Environmental Quality
Annual Agriculture Progress Reports
Neuse and Tar-Pamlico Basins
Nov. 8th and 9th, 2017
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Neuse & Tar-Pamlico River Basins
Department of Environmental Quality
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Neuse and Tar-Pamlico Nutrient Strategies
•Addressing chlorophyll-a impairments
•Nutrient Management Strategies for each watershed
•Address point & nonpoint sources
•Goal
•30% nitrogen load reduction
•Tar -Pamlico: no increase in phosphorus load
•Baseline 1991-1995 (Neuse) & 1991 (Tar-Pamlico)
•Effective dates:
•Neuse: (1998)
•Tar -Pamlico (2001)
Department of Environmental Quality
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Agriculture Rule Overview
•Rules Effective
•August 1998 (Neuse) & September 2001 (Tar-Pamlico)
•Collective compliance approach
•Goal
•30% nitrogen load reduction
•Tar -Pamlico: no increase in phosphorus load
•Basin Oversight & Local Advisory Committees
•Develop accounting tools, track & report progress
•Assist with implementation
Department of Environmental Quality
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Basin Oversight Committees
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 Resources
Environmental
General Farming
Pasture-Based Livestock
Scientific Community
Department of Environmental Quality
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Cropland Nitrogen Accounting
•Nitrogen Loss Estimation Worksheet (NLEW)
•Empirical spreadsheet-based model
•Developed by DWR, NRCS, NCSU and others
•Estimates nitrogen loss from cropland agriculture
•Compare baseline loss to current crop year
•Loss estimates at county scale
•Data collected annually:
•Crop types
•Crop acreage
•Fertilization rates
•BMPs implemented
Department of Environmental Quality
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Neuse: Estimated N Loss Reductions from Cropland
Department of Environmental Quality
County
2015 Reported N Loss
Reduction
2016 Reported N Loss
Reduction
Carteret 49%55%
Craven 62%57%
Durham 82%75%
Franklin 84%85%
Granville 86%67%
Greene 54%53%
Johnston 53%52%
Jones 43%38%
Lenoir 39%41%
Nash 62%58%
Orange 86%92%
Pamlico 23%29%
Person 77%87%
Pitt 53%44%
Wake 76%80%
Wayne 55%58%
Wilson 47%44%
Total 53%52%
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Department of Environmental Quality
0%
10%
20%
30%
40%
50%
60%Percent ReductionYear
NLEW v5.02 NLEW v5.31 NLEW v5.32
NLEW v5.33a NLEW v5.33b NLEW v6.0
Goal
Neuse: Estimated N Loss Reductions from Cropland
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Department of Environmental Quality
County 2015 reported N loss
reduction
2016 reported N loss
reduction
Beaufort 54%49%
Edgecombe 48%45%
Franklin 80%79%
Granville 86%81%
Halifax 49%50%
Hyde 58%62%
Martin 28%36%
Nash 70%68%
Person 54%65%
Pitt 68%54%
Vance 77%81%
Warren 80%75%
Washington 54%53%
Wilson 52%50%
Total 58%56%
Tar -Pamlico: Estimated N Loss Reductions from Cropland
0%
10%
20%
30%
40%
50%
60%
70%% ReductionYear
NLEW v5.02 NLEW v5.51 NLEW v5.52
NLEW v5.53a NLEW v5.53b NLEW v6.0
Goal
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Department of Environmental Quality
Tar -Pamlico: Estimated N Loss Reductions from Cropland
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•Developed by Joint Technical Committee
•EMC approved in 2005
•Qualitative indicator trends
•9 indicators qualitatively assess risk of P loss against no
increase goal
•Baseline vs. current crop year
•Characterize changes in land use and management
Department of Environmental Quality
Tar -Pamlico: Phosphorus Accounting Method
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Tar -Pamlico: Phosphorus Loss Tracking
Parameter Units Baseline 1991 CY2016
Percent ‘91-‘16
change
CY2015 P Loss
Risk +/-
Agricultural land Acres 807,026 593,530 -26%-
Cropland conversion
(to grass & trees)Acres 660 47,134 7042%-
CRP / WRP
(cumulative)Acres 19,241 41,833 117%-
Conservation tillage Acres 41,415 62,151 50%-
Vegetated buffers
(cumulative)Acres 50,836 218,440 330%-
Water control
structures (cumulative)
Acres
affected 52,984 92,208 74%-
Scavenger crop Acres 13,272 86,109 549%-
Animal waste P lbs of P/ yr 13,597,734 14,805,403 9%+
Soil test P median P index 83 84 1%+
Department of Environmental Quality
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Looking Forward
•Basin Oversight Committees continue to evaluate crop
trends
•Rules readoption for Neuse and Tar-Pamlico strategies
•Rule proposal to submit future agriculture reports to
DEQ
•Rule proposal to report to EMC biannually on each
nutrient strategy
Department of Environmental Quality
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QUESTIONS?
Department of Environmental Quality
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Reserve
Slides in Reserve
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Flow-Normalized Nitrogen Loads (% vs. 1991-1995)
Neuse River at Fort Barnwell
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Flow-Normalized Nitrogen Loads (% vs. 1991-1995)
Tar River near Grimesland
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Flow-Normalized Total Phosphorus Load (% vs. 1991-95)
Tar River near Grimesland