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  1. Home
  2. Polluted Runoff: Nonpoint Source (NPS) Pollution
  3. Types of NPS Pollution

Nonpoint Source: Forestry

On this Page:

  • Overview 
  • Reports and Guidance Documents
  • Forestry Certification Programs
Heavy machinery on a logging road.
Removal of vegetation and disturbance of soil from heavy machinery can cause an increase in polluted runoff.

Overview:

Sources of nonpoint source (NPS) pollution associated with forestry activities include removal of streamside vegetation, road construction and use, timber harvesting, and mechanical preparation for the planting of trees. Road construction and road use are the primary sources of NPS pollution on forested lands, contributing up to 90 percent of the total sediment from forestry operations. In addition to other water quality impacts, an excessive quantity of sediment in a water body can reduce the ability of aquatic organisms to successfully live, forage, and spawn. 

Harvesting trees in the area beside a stream can affect water quality by reducing the streambank shading that regulates water temperature and by removing vegetation that stabilizes the streambanks. These changes can harm aquatic life by limiting sources of food, shade and shelter, as well as decreasing areas suitable for species intolerant of warmer temperatures. 

Logging road with piles of timber and a logged hillside.
Logging on hillsides and logging roads pose are a high risk for polluted runoff.

Reports and Guidance Documents 

  • National Management Measures to Control Nonpoint Source Pollution from Forestry This report helps forest owners protect lakes and streams from polluted runoff that can result from forestry activities. These scientifically sound techniques are the best practices known today. The report will also help states to implement their nonpoint source control programs
  • Environmentally Sensitive Maintenance for Dirt and Gravel Roads (pdf) (26.03 MB, October 2007)
    This manual identifies, documents, and encourages the use of environmentally sensitive maintenance of dirt and gravel roads. The document provides insight into using natural systems and innovative technologies to reduce erosion, sediment, and dust pollution while more effectively and efficiently maintaining dirt and gravel roads and gives the users a "tool box" full of environmentally sensitive maintenance "tools" and practices.
  • Techniques for Tracking, Evaluating, and Reporting the Implementation of Nonpoint Source Control Measures; Forestry (pdf) (6.43 MB, July 1997, 841-B-97-009)
    The focus of this guide is on the design of monitoring programs to assist forestry management measure and best management practice implementation, with particular emphasis on statistical considerations.
  • Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters See Chapter 3, Management Measures for Forestry.
  • Montana Forestry Practices Program: The Forestry Practices Program leads a biennial field review of the application and effectiveness of BMPs. An audit report is published with the findings.
  • Water-Road Interaction Technology Series Documents (2000) This website contains a wealth of resources in helping to manage the impacts of unpaved, low-volume roads on water resources. Topics covered include surface drainage, subsurface drainage, stream crossings, as well as an extensive bibliography of related materials.

Forestry Certification Programs

Forest management certification is evolving rapidly in the United States. Forest management certification arose as a non-regulatory alternative for fostering the improved stewardship of working forestlands. While there are many regulations governing forest management—particularly in the United States—certification provides a private incentive to encourage landowner commitment to sustainable forest management. It also offers a stamp of approval for forest management practices that meet standards considered to be environmentally appropriate, socially beneficial, and economically viable. There are now three major forestry certification programs in the United States:

  • Sustainable Forestry Initiative® Program
  • American Tree Farm System
  • Forest Stewardship Council 

Polluted Runoff: Nonpoint Source (NPS) Pollution

  • Basic Information
  • Types of NPS Pollution
    • Agriculture
    • Abandoned Mine Drainage
    • Forestry
    • Hydromodification and Habitat Alteration
    • Marinas and Boating
    • Highways and Bridges
    • Urban Areas
    • Wetland/Riparian Management
  • 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
    • Darby Duck, the Aquatic Crusader
    • Word Search Puzzle
    • What's Wrong with This Picture?
Contact Us about Nonpoint Source Pollution
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on February 20, 2025
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