Polluted Runoff: Nonpoint Source Pollution

Monitoring: Additional Resources

Monitoring and Evaluating Nonpoint Source Watershed Projects: An update to the 1997 guidance, this guidance is written primarily for those who develop and implement monitoring plans for watershed projects management projects, or to evaluate the technical merits of monitoring proposals. EPA-841-R-16-010

Monitoring Guidance for Determining Effectiveness of Nonpoint Source Controls, Final: (1997) This guidance addresses design of monitoring programs to assess water quality to determine impacts of nonpoint sources and effectiveness of best management practices (BMPs) used as controls. EPA-841-B-96-004

National Water Quality Handbook: (2003) Covers statistical design, variable selection, sampling location, sample analysis and much more. 

Techniques for Tracking, Evaluating, and Reporting the Implementation of Nonpoint Source Control Measures - Agriculture (PDF) (92 pp, 240 K)(1997) Focusing specifically on monitoring agricultural BMPs, this manual covers site selection, sample size estimation, sampling and results evaluation and presentation. EPA 841-B-97-010

Techniques for Tracking, Evaluating, and Reporting The Implementation of Nonpoint Source Control Measures for Forestry: (1997) This guidance is intended to assist state, regional, and local environmental professionals in tracking the implementation of BMPs used to control nonpoint source pollution generated by forestry practices. Information is provided on methods for sample site selection, sample size estimation, sampling and result evaluation and presentation. The focus of the guidance is on the statistical approaches needed to properly collect and analyze data that are accurate and defensible. EPA 841-B-97-009

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