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
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. National Aquatic Resource Surveys
  3. Background

Manuals Used in the National Aquatic Resource Surveys

Various manuals are used to communicate the methods and guidelines for the National Aquatic Resource Surveys (NARS):

  • Field Operations Manual: Outlines the field protocols that crews will utilize to sample sites
  • Lab Operations Manual: Contains the methods for sample analysis
  • Quality Assurance Project Plan: Identifies the quality control measures in place to validate the quality of the data and collection
  • Site Evaluation Guidelines: Provides guidance on site assessment that must be done ahead of a sampling visit to ensure the site is sampleable and fits within the site requirements
  • Training Videos: Demonstrate data collection, field methods, and packing and shipping procedures

On this page:

  • National Coastal Condition Assessment Manuals
  • National Lakes Assessment Manuals
  • National Rivers & Streams Assessment Manuals
  • National Wetland Condition Assessment Manuals

National Coastal Condition Assessment

2020

  • NCCA 2020 Field Operations Manual
  • NCCA 2020 Lab Operations Manual
  • NCCA 2020 Quality Assurance Project Plan
  • NCCA 2020 Site Evaluation Guidelines
  • NCCA Marine Training Videos
  • NCCA Great Lakes Training Videos

2015

  • NCCA 2015 Field Operations Manual
  • NCCA 2015 Lab Operations Manual
  • NCCA 2015 Quality Assurance Project Plan
  • NCCA 2015 Site Evaluation Guidelines
  • NCCA 2015 Technical Support Document

2010

  • NCCA 2010 Field Operations Manual
  • NCCA 2010 Lab Methods Manual
  • NCCA 2010 Quality Assurance Project Plan
  • NCCA 2010 Site Evaluation Guidelines
  • NCCA 2010 Technical Support Document
NCCA field crew member recording data during a site visit
Photo: Colleen Mason

National Lakes Assessment

2022

  • NLA 2022 Field Operations Manual
  • NLA 2022 Lab Operations Manual
  • NLA 2022 Quality Assurance Project Plan
  • NLA 2022 Site Evaluation Guidelines
  • NLA 2022 Training Videos
  • NLA 2022 Technical Support Document

2017

  • NLA 2017 Field Operations Manual
  • NLA 2017 Lab Operations Manual
  • NLA 2017 Quality Assurance Project Plan
  • NLA 2017 Site Evaluation Guidelines
  • NLA 2017 Technical Support Document

2012

  • NLA 2012 Field Operations Manual
  • NLA 2012 Lab Operations Manual
  • NLA 2012 Quality Assurance Project Plan
  • NLA 2012 Site Evaluation Guidelines
  • NLA 2012 Technical Support Document

2007

  • NLA 2007 Field Operations Manual
  • NLA 2007 Quality Assurance Project Plan
  • NLA 2007 Technical Support Document
Canoe filled with sampling gear for the NLA 2012
Photo: Jet Stine, Oklahoma Water Resources Board

National Rivers & Streams Assessment

2023-2024

  • NRSA 2023-24 Field Operations Manual Non-Wadable
  • NRSA 2023-24 Field Operations Manual Wadable
  • NRSA 2023-24 Lab Operations Manual
  • NRSA 2023-24 Quality Assurance Project Plan
  • NRSA 2023-24 Site Evaluation Guidelines

2018-2019

  • NRSA 2018-19 Field Operations Manual Non-Wadeable
  • NRSA 2018-19 Field Operations Manual Wadeable
  • NRSA 2018-19 Lab Operations Manual
  • NRSA 2018-19 Quality Assurance Project Plan
  • NRSA 2018-19 Site Evaluation Guidelines
  • NRSA 2018-19 Technical Support Document

2013-2014

  • NRSA 2013-14 Field Operations Manual Non-Wadeable
  • NRSA 2013-14 Field Operations Manual Wadeable
  • NRSA 2013-14 Lab Operations Manual
  • NRSA 2013-14 Quality Assurance Project Plan
  • NRSA 2013-14 Site Evaluation Guidelines
  • NRSA 2013-14 Technical Support Document

2008-2009

  • NRSA 2008-09 Field Operations Manual
  • NRSA 2008-09 Lab Operations Manual
  • NRSA 2008-09 Quality Assurance Project Plan
  • NRSA 2008-09 Site Evaluation Guidelines
  • NRSA 2008-09 Technical Support Document
Fish collected during NRSA 1314 training
Photo: Michael Brennan

National Wetland Condition Assessment

2021

  • NWCA 2021 Field Operations Manual
  • NWCA 2021 Lab Operations Manual
  • NWCA 2021 Quality Assurance Project Plan
  • NWCA 2021 Site Evaluation Guidelines
  • NWCA 2021 Technical Support Document

2016

  • NWCA 2016 Field Operations Manual
  • NWCA 2016 Lab Operations Manual
  • NWCA 2016 Quality Assurance Project Plan
  • NWCA 2016 Site Evaluation Guidelines
  • NWCA 2016 Technical Support Document

2011

  • NWCA 2011 Field Operations Manual
  • NWCA 2011 Lab Operations Manual
  • NWCA 2011 Quality Assurance Project Plan
  • NWCA 2011 Site Evaluation Guidelines
  • NWCA 2011 Technical Support Document
Crew members sampling soil at a site during NWCA 2011
Photo: Doug Wood, West Virginia DEP

National Aquatic Resource Surveys

  • Background
    • Indicators
    • Manuals
    • Map of Sampled Sites
  • NARS Data
    • Journal Articles
    • Applying the Data
    • LakeCat
    • StreamCat
  • National Coastal Condition Assessment
  • National Lakes Assessment
  • National Rivers and Streams Assessment
  • National Wetland Condition Assessment
  • Outreach Materials
Contact Us about National Aquatic Resource Surveys
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on December 19, 2024
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

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

Connect.

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

Ask.

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

Follow.