We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Polluted Runoff: Nonpoint Source Pollution

Nonpoint Source Monitoring: Technical Notes

Through the National Nonpoint Source Monitoring Program (NNPSMP), states monitor and evaluate a subset of watershed projects funded by the Clean Water Act Section 319 Nonpoint Source Control Program. The program has two major objectives:

  1. To scientifically evaluate the effectiveness of watershed technologies designed to control nonpoint source pollution
  2. To improve our understanding of nonpoint source pollution

NNPSMP Tech Notes is a series of publications that shares this unique research and monitoring effort. It offers guidance on data collection, implementation of pollution control technologies and monitoring design, as well as case studies that illustrate principles in action.


Prepared by Teratech, Inc. for US EPA. (Technotes were updated in October 2016 to reflect current urls.) 

Tech Notes 10 Supplemental Materials(9 pp, 101 K)   Zip file includes Excel and R files 

You may need Adobe Reader to view files on this page. See EPA’s About PDF page to learn more.