National Aquatic Resource Surveys

U.S. Environmental Protection Agency, states, and tribes are conducting a series of surveys of the nation's aquatic resources. Often referred to as probability-based surveys, these studies provide nationally consistent and scientifically-defensible assessments of our nation's waters and can be used to track changes in condition over time. Each survey uses standardized field and lab methods and is designed to yield unbiased estimates of the condition of the whole water resource being studied (i.e., rivers and streams, lakes, wetlands, or coastal waters).

Schedule:

Links:

• National Fish Tissue Survey
• EPA's Environmental Monitoring and Assessment Program (EMAP)
• EMAP Aquatic Resource Monitoring
• Design and Analysis of Probability-Based Surveys
• Overview of Probabilistic Surveys
• Water Pollution Control Program Grants (Section 106)
• Ecoregion Maps