RESOURCES
National Stormwater Trust, Inc. is a stormwater management company that assumes the responsibility for the operation of stormwater ponds and deploys the latest technology to provide state-of-the-art stormwater treatment solutions that benefit our partners and the environment.
Learn more about stormwater management in the following resources.
Discover Our Webinar Series
Cost-Effective Means of Meeting the New Stormwater Treatment Criteria Webinar
This webinar explores practical, cost-effective strategies for meeting Florida’s updated stormwater treatment criteria. It highlights approaches that help projects comply with stricter nutrient performance standards while optimizing design and treatment strategies. You can also view the PowerPoint slides here.
ACEC Florida & FES Stormwater Rule Seminar Series Recording
Presented to ACEC FL and FES as part of their Stormwater Rule Seminar Series, this webinar by Mark Thomasson, P.E. covers how to calculate pre- and post-development nutrient loading using BMPTrains. It includes practical examples of estimating nutrient reductions from common BMPs and innovative approaches such as smart ponds with Continuous Monitoring and Adaptive Control (CMAC), as well as using BMPTrains to determine Stormwater Nutrient Credit (SNCs™) needs for partially treated sites and how to obtain them.
New Stormwater Rule: What You Need to Know — PowerPoint Slides
Explore expert insights on Florida’s new stormwater rule with the official PowerPoint slides from our recent webinar featuring Mark Thomasson, P.E. Whether you attended the live session or want to review the key updates and practical guidance, this presentation is a valuable resource for engineers and project managers navigating the updated regulations.
Avoiding Offsite Impacts with Wetland Assimilative Capacity Analysis Webinar
The webinar explains how Florida’s updated stormwater rule allows more design flexibility through strategies like off-site compensatory treatment and RSMS, which may involve discharging partially treated runoff to wetlands. It explores wetland assimilative capacity and its significance for demonstrating that your project meets the discharge requirements under the new rule.
New Regulations & Nutrient Credits Explained Webinar
Explore the latest updates to Florida’s stormwater regulations and learn how to meet the new treatment requirements using stormwater nutrient credits™ (SNCs) from regional stormwater management systems (RSMSs). Led by Mark Thomasson, P.E., the session covers the new treatment requirements, non-standard options for meeting new requirements, exemptions and grandfathering provisions.
IMPORTANT DOCUMENTS
This website includes details on how the new stormwater rule works, updated forms, applicants handbook Volume IIs, and implementation timeline including when it is effective and who is affected.
FDEP, [Updated] Environmental Resource Permit (ERP) Applicant’s Handbook Vol. I §8.3.3(a)
This example shows how to calculate hydraulic and nutrient loading to confirm a wetland has enough assimilative capacity to receive stormwater discharge in compliance with Rule 62-611.
This document focuses on how municipalities, utilities, and related organizations can use advances in technology to implement “smart data infrastructure” for wet weather control—that is, how they can use advanced monitoring data to support wet weather control and decision-making in real time or near real time.
The study results suggest that it is imperative to consider future sea level rise conditions in stormwater design in low-lying coastal areas of Florida and around the world to prevent poor pond performance and increased risk of flooding in the future.
An informative narrative of the how stormwater can be effectively reused.
This manual is a compilation of information that will be useful to anyone interested in the St. Johns River Water Management District’s (SJRWMD) environmental resource permitting (ERP) program. It was developed as a result of the enactment of section 373.4131 of the Florida Statutes which directed the Department of Environmental Protection (DEP) and the water management districts to adopt statewide ERP rules.
Each Water Management District has adopted an ERP Applicant’s Handbook Volume II (“Volume II”) which contains the District-specific design and performance criteria for stormwater quantity, flood control, stormwater quality and any special basin criteria or other requirements that are applicable within the geographic area of the specific water management district.
This Applicant’s Handbook Volume II accompanies Chapter 62-330, Fla. Admin. Code, and the Environmental Resource Permit Applicant’s Handbook Volume I (General and Environmental). Applicant’s Handbook Volume I is applicable to all environmental resource permit applications, and provides background information on the environmental resource permit (ERP) program.
The Connecticut Department of Environmental Protection (CTDEP) has been actively involved in the operation of Connecticut’s Nitrogen Credit Exchange (NCE) since 2002. During the 2002-2009 period the total value of credits bought and sold was $45.9 million, representing 15.5 million nitrogen credits exchanged.
Technical Release 55 (TR-55) presents simplified procedures to calculate storm runoff volume, peak rate of discharge, hydrographs, and storage volumes required for floodwater reservoirs. These procedures are applicable in small watersheds, especially urbanizing watersheds, in the United States. First issued by the Soil Conservation Service (SCS) in January 1975, TR-55 incorporates current SCS procedures. This revision includes results of recent research and other changes based on experience with use of the original edition.
Click on the link below to open the document in a new window: