Division of Watershed Stewardship

The DNREC Division of Watershed Stewardship manages and protects the state’s soil, water and coastlines. It uses a comprehensive array of watershed-based programs to ensure proper stewardship of Delaware’s natural resources. Watershed Assessment and Management

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Designer Training Modules

The following resources from the DNREC Sediment and Stormwater Program are provided to assist Sediment and Stormwater Management Plan designers in use of the Delaware Urban Runoff Management Model (DURMM) and the design of post construction stormwater best management practices. Sediment and

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Erosion and Sediment Control Handbook Details

The Erosion and Sediment Control Handbook provides background information on erosion and sedimentation, information on Delaware’s regulatory program and standards and specifications for erosion and sediment control. Download the full Erosion and Sediment Control Handbook and any of the standard details to be used on Sediment and Stormwater Plans (below) that are needed.

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Sediment and Stormwater Newsletter

The DNREC Sediment and Stormwater Program offers an email-based newsletter that shares information on permitting, best practices, training opportunities, and more. Send a blank email to join-dnrec_sedstorm_news@lists.state.de.us to sign up for the newsletter. Past Issues 2024 Nov. 2024 Oct. 2024

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Sediment and Stormwater Applications

The Delaware Sediment and Stormwater Regulations require an approved Sediment and Stormwater Management Plan from the department or a delegated agency for regulated land-disturbing activities. Applicants will use

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Plan Review, Engineering, Construction and Maintenance Resources

The following are resources from the DNREC Sediment and Stormwater Program for sediment and stormwater plan reviews, engineering design, construction activities and maintenance of best management practices. Plan Review Engineering

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Stormwater Watershed Reports

This page contains links to reports on the characteristics of specific Delaware watersheds for use in preparation of sediment and stormwater plans. Appoquinimink Scope of Work Hydrology Report – January 2009 Appendix A – TSDN Documents

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Training and Certification

The DNREC Sediment and Stormwater Program provides several different training opportunities to help those involved in land development and construction projects meet the requirements of the Delaware Sediment and Stormwater Regulations.

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Sediment and Stormwater

The DNREC Sediment and Stormwater Management Program operates within the Division of Watershed Stewardship’s Conservation Programs Section. The program employs a comprehensive approach to sediment control (both during and after construction) and stormwater management that includes monitoring of stormwater quantity and water quality control. [panel type=”success”

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Sediment and Stormwater Delegated Agencies

The following agencies have delegation of Sediment and Stormwater Program elements, consisting of plan review, construction inspection, and maintenance inspection for their geographic boundaries. State Agencies Department of Natural Resources & Environmental Control (DNREC) Division of Watershed Stewardship Sediment and Stormwater Program 285 Beiser Boulevard, Suite 102 Dover DE 19904 302-608-5458 DNREC is responsible

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Floodplain Management

The DNREC floodplain management program works to preserve public health, safety, and well-being and protect property by reducing flood hazard risks statewide. Flood Insurance Floodplain Mapping

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Resilient Community Partnership: Atlantic Coast Communities and Lewes

DNREC’s Delaware Coastal Programs (DCP) office has partnered with a group of seven unique coastal municipalities on a comprehensive assessment of impervious surface coverage. The project will produce community-specific strategies for reducing existing and future impervious surface coverage and increasing stormwater infiltration. Local Leadership [column

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