Skip to main content

Competency Area 6: Watershed hydrology AEM

PO 68. Understand the multiple-barrier concept in watershed protection.

The multiple barriers concept is a strategy applied to minimize the occurrence, availability, and transport of pathogens to surface and groundwater supplies. It consists of four major barriers:

  • Imports and bio-security to reduce occurrence of unwanted pathogens
  • Animal health and hygiene to minimize the spread and availability of pathogens
  • Waste management to contain and further reduce availability
  • Land application BMP practices to reduce transport and off-site exports

More information and implementation of the multiple barrier concept is addressed by the New York's USDA NRCS Conservation Practice Standards (