News and Press


All News


More Tweets

Permits/Licenses
Air Pollution Control Preconstruction Permits
Air Pollution Control Operating Permits
Freshwater Wetlands
Septic (ISDS/OWTS) Records
Septic (ISDS/OWTS) Licensing
Stormwater Permitting Info
All Other Water Permits
Aboveground Storage Tank Registration
Underground Storage Tanks
Permitted Waste Transporters
Online Hunting/Fishing
Boating/Fishing/Hunting
Boat Registration Renewal
Rec Freshwater Fishing Licenses
Rec Saltwater Fishing Licenses
Marine Fisheries License Renewals
Shellfish Harvester Certification
Online Renewals
Agriculture Product Permit Renewals
Hazardous Waste Transporter Permit Renewals
Medical Waste Generator Registration
UST Registration Renewal
Marine Fisheries License Renewals
Online Permit Searches
Multi-Sector General Permits
Non-Contact Cooling Water Permits
Septic (OWTS) Records After 1990
Septic (OWTS) Records Before 1990
Wetlands Permits
Remediation General Permits
Other Resources
Application Forms
Permit Application Center
Request a File Review
Rules and Regulations

RI Stormwater Design & Installation Standards Manual

KEY RESOURCES

Stormwater Management, Design, and Installation Rules (250-RICR-150-10-8) are now in effect. The purpose of these 2018 Rules is to recodify the Stormwater Manual into the Rhode Island Code of Regulations format as required by amendments to the Administrative Procedures Act (§ 42-35-5). This recodification followed a standard format used for all state regulations. The RI Stormwater Design and Installation Standards Manual was adopted in December 2010 following the standard rule-making process used by RI DEM and the Coastal Resources Management Council (CRMC). However, the Manual was not written in typical rule format, and a great deal of the Manual is not regulatory and in fact acts as guidance. Only those parts of the original Manual that are regulatory are included in the recodified “RI Stormwater Management, Design and Installation Rules” (“Stormwater Rules”). Regulatory language describes actions that the regulated public must do or must not do. As a result, background information, diagrams, photos, and most of the Appendices are not included in the recodified Stormwater Rules. In recodifying the Manual, the Department preserved the full intent of the original Manual requirements such that there will be no difference in how a stormwater system is designed and installed under the recodified Stormwater Rules. The Stormwater Design and Installation Standards Manual will be maintained as guidance and can still be used to design stormwater systems.

APPLICATION FORMS

 

PRIMARY RESOURCES


LID Guidance Documents:

 

Stormwater Analysis & Design Guidance Documents:

 

The DEM point of contact for questions about the manual is Ernie Panciera who may be reached at 401-222-4700 Ext. 7603. Also, questions may be addressed by e-mail to water@dem.ri.gov. To schedule a meeting to discuss application of the manual on a specific project, please contact the Office of Customer and Technical Assistance at 222-6800.


TRAINING

DEM and CRMC, in conjunction with the University of Rhode Island, held a series of public training sessions to help acquaint users with the new manual. Further information about the training sessions is available at https://web.uri.edu/riss/.

January 13, 2011
Stormwater Manual Training Part 1: Using the Revised Manual

1. Why Update the Manual?
2. Minimum Standards
3. How to Use the Manual
4. Low Impact Development Planning & Design
5. Acceptable BMPs
6. Design Exercises
7. Single Family Individual Lot Design Options
January 19, 2011
Stormwater Manual Training Part 2: BMP Construction and Maintenance

1. Why Proper Installation is Important
2. Design Elements for BMPs
(down for maintenance)
(down for maintenance)
5. Proper Erosion and Sediment Controls to Protect BMPs
6. Importance of Maintenance
7. Typical Routine and Long-term Maintenance Measures
8. Vegetation Management and Maintenance
9. Maintenance Exercise
10. Typical Maintenance Costs
March 22, 2011
Stormwater Manual Training Part 3: Design Considerations and Case Studies

1. Required Management Volume Calculations and Redevelopment Considerations
2. QPA Requirements/Credits
3. BMP Design - Critical Elements
4. Design Example: Residential Subdivision
5. Case Study: Redevelopment/Infill
March 24, 2011
Stormwater Manual Training Part 4: Design Considerations and Case Studies

1. Recap of Practices
2. Material Specifications and Measures for WVTS Construction and Maintenance
3. Infiltration (Including Permeable Paving)
4. Construction and Maintenance Summary

In some cases, the certain elements of a Minimum Standard would not be applicable to the single-family residential project or the requirement would be an undue burden compared to the scale and impact of the project. In an effort to reduce the burden of the new regulations on single-family homeowners and encourage land use practices that meet RIDEM's stormwater treatment goals.

Accordingly, both DEM and CRMC have developed Rhode Island Stormwater Management Guidance for Individual Single-Family Residential Lot Development. All applicants may also elect to fully comply with all minimum standards and performance criteria outlined in the RISDISM if they wish, or utilize the RISDISM for further guidance.

Stay Informed

Subscribe to the OWRINFO E-mail List: DEM's Office of Water Resources (OWR) has created an email list to distribute guidance, policies, and new regulations regarding the Rhode Island Stormwater Design and Installation Standards Manual and stormwater permitting programs in OWR.

Subscribe here
For questions or help subscribing: owner-owrinfo@listserve.ri.gov.

Contact
Office of Water Resources
235 Promenade Street
Providence, RI 02908-5767
Phone: (401) 222-3961
Fax: (401) 222-3564