Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Chemicals and Toxics
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Pesticides
    • Radon
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Guidance
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Organization Chart
    • Staff Directory
    • Planning, Budget, and Results
    • Jobs and Internships
    • Headquarters Offices
    • Regional Offices
    • Lab and Research Centers
Polluted Runoff: Nonpoint Source (NPS) Pollution
Contact Us

Nonpoint Source Pollution: Technical Guidance and Tools

Guidance

Chesapeake Bay Watershed

  • Guidance for Federal Land Management in the Chesapeake Bay Watershed, May 2010

National Management Measures

  • From Agriculture, July 2003
  • From Urban Areas, November 2005
  • From Forestry, May 2005
  • From Marinas and Recreational Boating, Nov. 2001
  • From Hydromodification, July 2007
  • To Protect and Restore Wetlands and Riparian Areas for the Abatement of Nonpoint Source Pollution, July 2005

Federal Facilities

  • Stormwater Management for Federal Facilities under Section 438 of the Energy Independence and Security Act, December 2009

Tools

  • Spreadsheet Tool for Estimating Pollutant Loads (STEPL):  STEPL employs simple algorithms to calculate:
    • nutrient and sediment loads from different land uses, and
    • the load reductions that would result from the implementation of various best management practices (BMPs).
  • Region 5 Model for Estimating Pollutant Load Reductions: The Region 5 Model is an Excel workbook that provides a gross estimate of sediment and nutrient load reductions from the implementation of agricultural and urban BMPs. It does not estimate pollutant load reductions for dissolved constituents.
  • Social Indicators Data Management and Analysis (SIDMA) tool:  This tool organizes, analyzes, and visualizes social indicators related to nonpoint source (NPS) management efforts through statistical and spatial relationships.
  • Social Indicator Planning and Evaluation System (SIPES) (PDF): A step-by-step system for using social indicators to help you plan, implement and evaluate Nonpoint Source (NPS) management projects. SIPES is intended to be used by resource managers who want to learn more about their watersheds.
  • Polluted Runoff: NPS Pollution Home
  • Basic Information
  • Types of NPS Pollution
  • Success Stories
  • Using a Watershed Approach
  • Webinars
  • Technical Guidance and Tools
  • Nonpoint Source News-Notes
  • NPSINFO Discussion Forum
  • National NPS Monitoring Program
  • Coastal Zone Act Reauthorization Amendments (CZARA)
  • Grants Reporting and Tracking System (GRTS)
  • 319 Grant program for States and Territories
  • Tribal 319 Grant Program
  • Contacts for NPS Programs
  • Resources for Students and Educators
Contact Us to ask a question, provide feedback, or report a problem.
United States Environmental Protection Agency

Discover.

  • Accessibility
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.

Last updated on December 15, 2020