Stormwater & Watershed Management

Between the rise of green infrastructure, the effects of climate change, increasingly complex regulations, and the seemingly endless pursuit of infrastructure funding, the stormwater management sector is more dynamic than most public services. Stay on top of new trends, studies, and developments that shape the stormwater sector with these resources. 

The fourth iteration of the WEF National MS4 Needs Assessment Survey has launched!

This biennial survey aims to continue tracking the needs of the MS4 sector by:

Identifying MS4 Program Challenges and Drivers: Understanding the common issues and factors influencing MS4 programs.

Determining Information and Resource Needs: Pinpointing the technical and informational resources that MS4 permittees require.

Estimating Funding Levels and Needs: Approximating current funding levels and identify the funding gaps within the MS4 sector.

The survey results help advocate for closing the funding gap, support the inclusion of stormwater as an independent infrastructure sector, and provide data to enhance stormwater management programs.

NOTE: There are 41 survey questions with an approximate completion time of 20 minutes. Deadline has been extended to: March 31, 2025.

BROWSE STORMWATER & WATERSHED MANAGEMENT NEWS

The latest stormwater articles, videos, and other content from throughout the organization and across the water sector.

Industrial Water Resources
Wastewater Collection System Operator Certification Studybook, 3rd Edition

Expand your knowledge of wastewater collection systems operation and prepare for certification examinations

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Stormwater & Watershed Management
Miami ‘Underline’ Delivers Fun and Function Beneath Elevated Metro Tracks

10-mile linear park addresses stormwater management, pedestrian connectivity, and heat-island effects in downtown Miami

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Collection Systems and Conveyance
WEF and WEAT Join Forces for 2025 Collection Systems and Stormwater Conference in Houston, TX

The Water Environment Federation (WEF) and the Water Environment Association of Texas (WEAT) are excited to announce the Collection Systems & Stormwater Conference ...

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Stormwater & Watershed Management
2024 in Review: This Year’s Top Five Stormwater Report Stories

With 2025 just around the corner, take a fresh look at Stormwater Report’s five most popular articles from this year

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Stormwater & Watershed Management
Help WEF Assess State of U.S. Stormwater Sector by Jan. 31

2024 U.S. MS4 Needs Assessment Survey seeks responses from regulated MS4 communities of all sizes

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Stormwater & Watershed Management
Exploring Why Hurricanes (Sometimes) Intensify So Quickly

New measurements underscore how sea spray can transform ordinary storms into severe hurricanes

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Featured Stormwater Resources

The featured resources below are just a sample of everything WEF has to offer. Search our entire website and technical resource database for more.

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Stormwater Advocacy

The Stormwater Community annually hosts the National Stormwater Policy Forum to advance the latest legislative and regulatory concerns of the stormwater sector legislators and regulators. This outreach includes creating the Recommendation to Improve the Stormwater Program In the U.S. document that stormwater advocates can use year-round.

 

Learn About the Issues

Rainfall to Results

Based on input from leading stormwater professionals, this report details the challenges, opportunities, and pathways to improving the nation’s stormwater systems to make them more efficient, effective, and sustainable.

This updated version was released in June 2023.

Read the Report

Stormwater, Watershed, and Receiving Water Quality Modeling

This special publication presents state-of-the-art stormwater modeling and is a practical tool that presents a broad compilation of existing models, their capabilities, and a roadmap for users to assist in the selection of such models for diverse applications. 

More on Stormwater Modeling

U.S. MS4 Needs Assessment Survey

This one-of-a-kind biennial national survey seeks to understand municipal separate storm sewer system (MS4) sector challenges, drivers, and needs.

Data was collected for the third installment in the series from late 2022 through early 2023.

See the Results

Stormwater Publications

Urban Stormwater Controls Operation and Maintenance

WEF Manual of Practice No. 39 includes the best practices for the continued operation of stormwater control measures (SCMs) for your stormwater programs. The material covered will be of particular use to designers of SCMs, utility managers, and O&M staff. 

Get MOP 39

User-Fee-Funded Stormwater Programs

A must-read for agencies and public works departments interested in developing charge systems for stormwater programs based on fee structures. 

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Green Infrastructure Implementation

This book provides actionable information promoting the implementation of green infrastructure. Unlike most publications, which focus on technical design of individual green elements, this peer-reviewed book tackles topics related directly to the ability to implement green infrastructure.

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Find the Stormwater & Watershed Communities You Need

STORMWATER COMMUNITY

This community provides leadership and a voice for effective stormwater management by developing high-quality technical products and programming to support stormwater professionals.

Join the Stormwater Community

WATERSHED MANAGEMENT COMMUNITY

This community develops and conducts activities to advance the understanding, planning, implementation, and use of watershed management tools and techniques to enhance the global water environment more effectively.

Join the Watershed Management Community

Join or Renew Your WEF Membership Today

Connect with our community of water professionals who ensure that our local communities have access to clean water that protects public health. Explore our member benefits and find the membership type that’s right for you.

Join or Renew Online

Visit Our Community Platform

This virtual workspace, called WEFUnity, empowers WEF members to network and collaborate in an online environment.

See what's happening in the Community Platform

EXPLORE ALL PRACTICE AREAS

WEF is a source of high-quality technical resources featuring the latest research, news, and education. WEF's members and other credible resources have created and compiled this information into the Practice Area groupings listed in the dropdown menu.

Industrial Water Resources

Industries treat and reuse wastewater and process water as well as provide environmentally sustainable wastewater treatment while reducing costs and maintaining value for their businesses.

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Operations

From hands-on-training and leadership opportunities, such as Operations Challenge, to online training, such as the Wastewater Treatment Fundamentals series, WEF provides operators with many opportunities to advance on-the-job knowledge and develop their careers.

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Utility Management

To respond to myriad daily challenges faced by water and wastewater utility leaders, WEF continuously works with its members and partners to develop a variety of management initiatives; resources; and educational, training, and networking opportunities.

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Biosolids Resource Recovery

Through biosolids management, solid residue from wastewater treatment is processed to reduce or eliminate pathogens and minimize odors, forming a safe, beneficial agricultural product. Biosolids are carefully monitored and must be used in accordance with regulatory requirements.

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Collection Systems and Conveyance

The system of underground pipes and maintenance structures that convey wastewater has brought dramatic improvements to public health. Most sewers carry wastes from households and commercial establishments and are referred to as sanitary sewers.

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Government & Regulatory Affairs

WEF advocacy activities aim to educate WEF members and the water sector on public policy issues related to water quality and resources and equip them to play a greater role in water policy discussions.

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Public Health

The water sector and its systems protect public and ecological health. Using the data that can be collected through smart water technologies provides additional insights to address complex public health issues.

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Stormwater & Watershed Management

Take a comprehensive look at how all water resources, including uplands, drainage basins, wetlands, stormwater, surface water, and groundwater interact.

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Water & Wastewater Treatment

More than 16,000 publicly owned water resource recovery facilities operate in the United States. Skilled engineers and operators work together to ensure new and updated facilities continue to protect public health and the environment.

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