Nutrient Management Decision Support Tools

Many decision support tools are currently available that may be utilized in evaluating and assessing nutrient loads and potential nutrient load management and reduction activities. These tools are available through state, federal, and other entities and may assist agencies and other stakeholders with nutrient management efforts. The following is a listing of identified decision support tools.

Tool Host Agency Website
(2001) Action Plan for Reducing, Mitigating, and Controlling Hypoxia in the Northern Gulf of Mexico USEPA link
(2008) Hypoxia in the Northern Gulf of Mexico: An update by the EPA Science Advisory Board USEPA link
AFT Guide to Outcome Estimation Tools American Farmland Trust link
AFT Soil Heath Tool Kit American Farmland Trust link
Agricultural Best Management Practices (BMPs) LSU AgCenter link
Agriculture Innovation Strategy Dashboard USDA link
Agricultural Operations Planning Tool; fertilizer, manure, pesticide application tool with 3 day forecasting USDA link
American Water Resources Association Policy Committee. 2012. Case Studies in Integrated Water Resources Management: From Local Stewardship to National Vision. Middleburg, Virginia. AWRA link
Annualized Agricultural Nonpoint Source (AnnAGNPS) model USDA/ARS link
BEACH Monitoring Program LDH link
Best Management Practice (BMP) Manuals LSU AgCenter link
BioData - Aquatic Bioassessment Data for the Nation (USGS) USGS under redevelopment
CAFO and/or agricultural production data LDAF link
CEQ Climate and Economic Justice Screening Tool *NEW* Council of Environmental Quality, The Executive Office link
Conservation Concerns Tool USDA link
CPRA Predictive Models and Modeling Webinars for 2017 Coastal Master Plan CPRA link
CropScape USDA link
CRSSP Imagery-Derived Requirements (CIDR) USGS link
Digital Soil Health Toolbox Soil Health Nexus link
Discharge Monitoring Report (DMR) Pollutant Loading Tool USEPA link
ECHO Enforcement & Compliance History Online Compliance Database USEPA link
EDMS (Electronic Document Management System) – DMR data which isn’t entered in ICIS LDEQ link
Effluent standards LDEQ link
Enduring Arches: Building Conservation Finance Projects for Impact Gordian Knot Strategies link
Fertilizer Use Data USDA/ERS link
Freshwater Network Floodplain Prioritization Tool Freshwater Network link
Forestry Best Management Practices (BMPs) LDAF link
Global Map of Water Funds The Nature Conservancy link
Green Infrastructure USEPA link
Gulf Coast Monitoring & Assessment Portal RESTORE-CMAP link
Gulf Hypoxia Action Plan 2008 for Reducing, Mitigating, and Controlling Hypoxia in the Northern Gulf of Mexico and Improving Water Quality in the Mississippi River Basin USEPA link
Gulf Hypoxia Monitoring Implementation Plan NOAA link
Gulf of Mexico Data Atlas NOAA link
Gulf of Mexico Hypoxia Watch NOAA link
HAB Economic Impacts Data Dashboard Balmoral Group link
HTF Success Stories HTF link
I-DROP Conservation Practices Tracking for HTF States (Christianson) Illinois Drainage Research and Outreach Program link
ICIS Integrated Compliance Information System) Permit Discharge Monitoring Report (DMR) Data USEPA link
International Stormwater BMP Database USEPA link
Iowa report - Agricultural Science and Technology (CAST) Report: Assessing the Health of Streams in Agricultural Landscapes: The impacts of Land Management Change on Water Quality Iowa link
LAQUAL Modeling for TMDL LDEQ link
LDEQ Ambient Water Quality Network data LDEQ link
LDEQ Discharge Monitoring Reports (DMRs) LDEQ link
LDEQ Louisiana Integrated Report Interactive Assessment Map LDEQ link
LDEQ Nonpoint Source (NPS) Annual Reports LDEQ link
LDEQ Nonpoint Source Watershed Implementation Plans (WIPs) LDEQ link
LDEQ Water Quality Integrated Reports LDEQ link
LDEQ. 2023. Louisiana’s Nonpoint Source Management Plan, 2023-2027 LDEQ link
Louisiana Administrative Code. May 2017. LAC Title 33 Part IX. Environmental Quality -Water Quality - Water Pollution Control LDEQ link
Louisiana Administrative Code. May 2017. Title 33, Part IX, Subpart 2, Section 2505. Permit Application and Special LPDES Program Requirements; Concentrated Animal Feeding Operations. LDEQ link
Louisiana Coastal Area Program (LCA), USACE Mississippi River Hydrodynamic and Delta Management Study (MRHDM) USACE/CPRA link
Louisiana Land Use Toolkit Louisiana Department of Economic Development (LED) and the Center for Planning Excellence (CPEX) link
Louisiana Municipal Association (LMA) LMA link
Louisiana State University Agricultural Center (AgCenter) Research & Extension. 2011. Publication 2806 – Poultry Environmental Best Management Practices BMPs LSU AgCenter link
Low Impact Development (LID) USEPA link
Lower Mississippi River Sub-Basin Committee on Gulf Hypoxia USEPA link
LSU Ag Center Environmental Concerns Poultry Topics LSU AgCenter link
LSUAg Louisiana Cover Crop Decision Making Tool LSU AgCenter link
Model Landscape Code LDEQ link
Moving Forward on Gulf Hypoxia: Annual Report 2010 USEPA link
Moving Forward on Gulf Hypoxia: Annual Report 2011 USEPA link
National Agroforestry Center USDA link
National Hydrology Dataset (NHD) USGS link
National Park Service-USGS Water Quality Partnership Jean Lafitte National Historic Park and Preserve NPS/USGS link
National Pollutant Removal Performance Database Center for Watershed Protection link
National Resource Inventory (NRI) USDA/NRCS link
National Small Flows Clearinghouse (NSFC) USEPA link
National Stormwater Quality Database USEPA link
Nationwide Urban Runoff Program USEPA link
The Nature Conservancy and Partners Freshwater Network TNC link
Nitrogen in Agricultural Systems: Implications for Conservation Policy USDA/ERS link
NOAA Gulf of Mexico Ecosystems & Hypoxia Assessment (NGOMEX) modeling NOAA link
NOAA Gulf of Mexico Hypoxic Zone Monitoring Implementation Plan NOAA link
NOAA Southeast Area Monitoring and Assessment Program (SEAMAP) NOAA link
Nonpoint Source News Notes USEPA link
NRCS APEX (Agricultural Policy/Environmental eXtender) USDA/NRCS link
NRCS Code 590 for Nutrient Management Plans USDA/NRCS link
NRCS Long-Term Agriculture Research (LTAR) network of data collection sites at federal scale (ARS.USDA.gov/LTAR) USDA/NRCS link
NRCS Water Quality Index for Agriculture USDA/NRCS link
Nutrient Tracking Tool (NTT) USDA link
OpenNSPECT (Non-point Source and Erosion Comparison Tool, NOAA) NOAA link
OpTIS (Operation Tillage Information System Tool) CTIC, Dagan, TNC link
Package Plants LDH link
Police Jury Association of Louisiana PJAL link
Pontchartrain Conservancy Hydrocast Maps LPBF link
R Sparrow USGS link
R Tools dataRetrieval Package for hydrologic data (DeCicco and Hirsch) CranR link
Recovery Potential Screening Tool USEPA link
Report on Nonpoint Source Progress in Hypoxia Task Force States USEPA/HTF link
Reports on Point Source Progress in Hypoxia Task Force States USEPA/HTF link
River Runner water mapping interactive tool for US Sam Learner link
Roth, J.L. and P.D. Capel. 2012. Changes in Water Budgets and Sediment Yields from a Hypothetical Agricultural Field as a Function of Landscape and Management Characteristics—A Unit Field Modeling Approach. U.S. Geological Survey. Scientific Investigations Report 2012–5203. USGS link
Scientific Assessment of Hypoxia in U.S. Coastal Waters Joint Committee on Ocean Science and Technology link
Sheeder, S.A. and B.M. Evans. 2004. Estimating nutrient and sediment threshold criteria for biological impairment in Pennsylvania Watersheds. Journal of the American Water Resources Association 40 (4): 881-888. Penn State link
Soil & Water Assessment Tool (SWAT) Modeling USDA/ARS link
SoilWeb USDA-NCSS link
SONRIS (Strategic Online Natural Resources Information System) DNR link
Source Water Collaborative: Collaborative Toolkit Protecting Drinking Water Sources through Agricultural Conservation Practices USDA/NRCS link
SPARROW Model Mapping Tool USGS link
State Water Programs: Nutrient Reduction Programs and Methods ACWA link
STORET/Water Quality Portal USEPA/USGS/NWQMC link
Stormwater Permit Resources LDEQ link
The National Small Flows Clearinghouse (NSFC) USEPA link
Tides and Currents NOAA link
Tiered collaborative strategies for reducing hypoxia and restoring the Gulf of Mexico USDA/ARS link
Tool for Bacterial Load Duration Curves UT link
U.S. Geological Survey – Water Resources Mission Area *UPDATED* USGS link
Urban Waters Outreach Toolkit USEPA link
USACE Beneficial Use of Dredged Material Program (BUDMAT) USACE link
USACE Engineer Research and Development Center (ERDC) USACE link
USACE Non-Cost Shared Programs USACE link
USACE Upper Mississippi River Restoration (UMRR) (formerly known as the Environmental Management Program or EMP) USACE link
USDA Agriculture Innovaton Strategy Dashboard *NEW* USDA link
USDA Conservation Assessment and Planning Tools *NEW* USDA NRCS link
USDA Economic Research Service (ERS) Data USDA/ERS link
USDA Economic Research Service (ERS) Report USDA/ERS link
USDA Economic Research Service, State Fact Sheets – Louisiana USDA link
USDA National Agricultural Statistics Service (NASS) Quick Stats Tool *NEW* USDA link
USDA/NRCS CEAP Project Assessment of the Effects of Conservation Practices USDA/NRCS link
USDA NRCS COMET-Planner Tool USDA link
USDA NRCS Conservation Data Viewer USDA link
USDA NRCS National Water and Climate Center Information Page USDA link
USEPA and LDEQ Reports - DO TMDLs and/or nutrient TMDLs USEPA/LDEQ link
USEPA Biocriteria Stressor Identification USEPA link
USEPA CADDIS (Causual Analysis/Diagnosis Decision-making System) causual evaluations in aquatic systems USEPA link
USEPA Climate Change and Water USEPA link
USEPA Climate Change Indicators Information Page USEPA link
USEPA CWSRF Best Practices Guide for Financing Nonpoint Source Solutions*NEW* USEPA link
USEPA Economic Guidance for Water Quality Standards USEPA link
USEPA Harmful Algal Blooms Online USEPA link
USEPA How’s My Waterway USEPA link
USEPA Model Ordinances to Prevent and Control Nonpoint Source Pollution USEPA link
USEPA MyWaters Mapper/WATERS GeoViewer *UPDATED* USEPA link
USEPA National Aquatic Resource Survey (NARS) USEPA link
USEPA Nitrogen and Phosphorus Data Access Tool (NPDAT) USEPA link
USEPA Nonpoint Source (NPS) Outreach Toolbox USEPA link
USEPA NPDAT - Water Quality Monitoring Sites with Nitrogen/Phosphorus (N/P) (STORage and RETrieval database or STORET) USEPA link
USEPA N-STEPS (Nutrient Scientific Technical Exchange Partnership and Support) USEPA link
USEPA Nutrient Indicators Dataset USEPA link
USEPA Nutrient Pollution Educational Materials Online USEPA link
USEPA Nutrient Pollution Policy and Data website (Nutrient microsite) USEPA link
USEPA Protocol for Developing Nutrient TMDLs USEPA link
USEPA Recovery Potential Screening Tool USEPA link
USEPA Report "Getting In Step: A Guide for Conducting Watershed Outreach Campaigns". 2010. EPA 841-B-10-002 UESPA link
USEPA Report "Getting in Step: Engaging and Involving Stakeholders in Your Watershed" USEPA link
USEPA Report "Reactive Nitrogen in the United States: An Analysis of Inputs, Flows, Consequences and Management Options" 2011. A Report of the EPA Science Advisory Board (EPA-SAB-11-013) USEPA link
USEPA Source Water Protection Program USEPA link
USEPA Storm Water Management Model (SWMM) USEPA link
USEPA Storm Water Management Model (SWMM) Training USEPA link
USEPA Surf Your Watershed USEPA link
USEPA Urban Guidance Document, Publication Number EPA 841-B-05-004, November 2005 USEPA link
USEPA Vision for the Clean Water Act Section 303(d) Program *NEW* USEPA link
USEPA Watershed Planning USEPA link
USEPA Water Quality Portal USEPA link
USEPA. 2009. An Urgent Call to Action: Report of the State-EPA Nutrient Innovations Task Group USEPA link
USEPA. 2012. Louisiana Tangipahoa River: Reducing Human and Animal Waste Discharge Restored Recreational Uses USEPA link
USEPA’s Monitoring and Assessment Program USEPA link
USGS Cooperative Water Program USGS link
USGS EarthExplorer USGS link
USGS EGRET R Package for Weighted Regressions on Time, Discharge, and Season *NEW* USGS link
USGS Global Visualization Viewer (GloVis) USGS link
USGS Groundwater Conditions Animated Data Visualization *NEW* USGS link
USGS National Water Dashboard USGS link
USGS SPARROW Mapping Tool USGS link
USGS Stream Stats Interactive Viewer USGS link
USGS WaterAlert Notification Service *NEW* USGS link
Water Erosion Prediction Project (WEPP) USDA link

Page Updated 05/23/2023