Brief Descriptions and Links to Office Water Oceans Watersheds (OWOW)State Water Monitoirng, Guidance for 2006, Guidance for 2004, 2002 Integrated WQ Monitoring, CALM, RF3/NHD, OWOW Home
Elements of a State Water Monitoring and Assessment Program, Regas, D.C., and J.A. Hanlon, USEPA, March, 2003, "recommends the basic elements of a State water monitoring program and serves as a tool to help EPA and the States determine whether a monitoring program meets the prerequisites of CWA Section 106(e)(1)." Complete text. Relative to Survey Designs the document includes:
- Objective: report condition of all waters, statistically valid
- Design should include probability-based networks
- Encouraged to consider EMAP (probability based) and NWQA (targeted, judgmental)
- Support estimation of amount or percentage of impaired waters Statewide
- Statewide estimates to within +/- 10% at a 90% CL encouraged
Guidance for 2006 Assessment, Listing, and Reporting Requirements Pursuant to Sections 303(d), 305(b), and 314 of the Clean Water Act [2006 Integrated Report Guidance (IRG)]. This guidance is for states, territories, authorized tribes, and interstate commissions that help prepare and submit section 305(b) reports (hereinafter referred to as "jurisdictions"). It outlines development of biennial Integrated Reports (IR) that would support EPA's strategy for achieving a broad-scale, national inventory of water quality conditions.
In Chapter 3 (and other sections) of the IR guidance, OW recommends that the results of probability monitoring be used 1) to explicitly report results of probability monitoring efforts in table 3-3 and 2) to provide more comprehensive (from a coverage perspective) state wide use support summaries requested in table 3-6, as applicable. OW would like the site-specific findings georeferenced so that OW can present increasingly specific layers of data, drilling down from state-wide probability monitoring, to basin-level probability monitoring, to specific sample points/assessment units. OWOW website
In a memo dated July 29, 2005, Diane Regas, Director, Office of Wetlands, Oceans, and Watersheds transmitted the above referenced document. This guidance replaces and supercedes many previous documents.
In a memo dated July 21, 2003, Diane Regas, Director, Office of Wetlands, Oceans, and Watersheds transmitted the above referenced document. This guidance replaces and supercedes many previous documents.
The 2004 guidance addresses the use of probability-based sampling designs in the context of the State's monitoring program, including rotating basin approaches.Go to Top
In a memo dated Nov 19, 2002, Robert H Wayland, Director Office of Wetlands, Oceans, Watersheds transmitted Guidance to State and Tribes for their 2002 Water Quality Reports:
Clean Water Act (CWA) Section 305(b) reports and Section 303(d) lists are highly visible ways of communicating about the health of the nation's waters. The quality and reliability of the information they contain becomes increasingly important as it is used to set priorities and to implement water quality controls and protection activities. For the first time, the Environmental Protection Agency (EPA) is providing states, territories, and authorized tribes with guidance for integrating the development and submission of 2002 305(b) water quality reports and Section 303(d) lists of impaired waters.
Relative to the design and analysis tasks the memo includes:
- integrate 305(b) reports and 303(d) lists,
- use National Hydrography Dataset (NHD) to define assessment units
- develop comprehensive monitoring and assessment strategies
- encourages the use of probabilistic designs
- recommends monitoring schedules be supportive of the rotating basin approach
Go to: Information on Survey designs to support 305(b) and 303(d)
The Office of Water has prepared a draft guidance document; Consolidated Assessment and Listing Methodology (CALM), that provides a framework for states and other jurisdictions to document how they collect and use water quality data and information for environmental decision making. The CALM material is available on the website: http://www.epa.gov/owow/monitoring/calm.html. Chapter 11 and Appendix C address design and implementation issues.
- Chapter 11. Monitoring Network Design and Implementation Scenarios (PDF, 136KB)
- Referenced Document: USEPA, 2000: Guidance for Choosing a Sampling Design for Environmental Data Collection, QA/G-5S
- Appendix C: Statistical Considerations for Data Quality Objectives and Data Quality Assessments in Water Quality Attainment Studies -- Draft (PDF, 1.1MB)
Detailed information on RF3 can be found at www.epa.gov/owow/monitoring/databases
Home page for OWOW www.epa.gov/owow