Doing Business With DNREC Online

The Department of Natural Resources and Environmental Control offers a number of online applications and tools to make it easier to interact with the agency.

Applications are categorized into General, Land-Use, Air Quality, Water Quality, Reporting Tools, Contaminants, Licensing, Permits and Certifications, Enforcement, Fish and Wildlife, and Outdoors and Recreation.

General, Department-Wide

Delaware Environmental Navigator: Map-based application to explore the many types of information collected by DNREC such as permitted facilities, enforcement actions and environmental monitoring. Search the Navigator by facility, by program, by permit, and more.

DNREC Open Data: Links to DNREC’s data sets posted on the Delaware Open Data Portal.

DNREC Public Notices: Public notices posted by the Department of Natural Resources and Environmental Control.

DNREC Events: A calendar listing of meetings, hearings, outdoor events, and other opportunities offered by the Department.

Land Use and Planning

Flood Planning Tool: A map-based tool to help determine flood risk for homes and businesses and for designing development projects in accordance with floodplain codes.

State-Regulated Tidal Wetland Map Index: Map-based index to regulatory maps of Delaware tidal wetlands.

Delaware Freshwater Wetland Toolbox: Learn about freshwater wetlands and view freshwater wetland maps.

Delaware Tax Ditch Map: A web-map of Delaware Tax Ditch boundaries, channels, rights-of-way and other information relating to Tax Ditches.

Delaware Tax Ditch Right-of-Way Search: A map-based tool to search for, and create reports on, tax ditch rights-of-way on specific Delaware property parcels.

Delaware Brownfields Marketplace: A map-based, searchable index of brownfield sites available for redevelopment.

Air Quality

Delaware Air Quality Forecast: The latest air quality index and air quality forecast for Delaware.

Delaware’s Air Quality Monitoring Network: A web-map showing the locations of Delaware air quality monitoring stations, with links to the latest readings as well as historical data.

Water Quality

Recreational Water Quality Monitoring: Map-based reporting of recreational water quality, including any water quality alerts, with details.

Reporting Tools

State and Local Emissions Inventory System (SLEIS): Online application for the regulated community to report air emissions. (Login required)

Online Tier II Manager: Online application for facilities required to submit annual hazardous chemical inventory (Tier II) reports (Login required).

Hazardous Waste Notification and Reporting: Small quantity and large quantity generators of hazardous waste must notify the state of Delaware of their activities.

Water Usage Reporting: Online submission of water usage reports (Login required).

Wastewater Discharge Monitoring Reports: Online reporting of wastewater discharges (Login required).

Storm Water Notices of Intent: Reporting and search of Notices of Intent (NOIs) for construction-related storm water discharges.


Delaware Environmental Release Notification System (DERNS): A notification system to alert Delawareans to releases or discharges of contaminants or pollutants that meet or exceed certain thresholds in their neighborhoods or throughout the state.

Recent Environmental Releases: A report on the most recent environmental release reports from the DERNS system.

Asbestos Notification System: Online notification of asbestos-related demolition and contamination.

Licensing, Permits and Certifications

Division of Water Applications: A portal for submissions and payments for many of the permitting programs in the Division of Water.

Online Well Permitting Application: Online application for well permits (Login required).

Gasoline Delivery Vessel (GDV) Application: Online application for a Gasoline Delivery Vessel permit (Login required).

Underground and Aboveground Storage Tank Fee Payment: Online payment of underground and aboveground storage tank fees.


DNREC Tip-411: A mobile app enabling the public to connect with the department’s Natural Resources Police officers, receive alerts, and submit anonymous tips from their smartphones.

Environmental Enforcement Actions: A searchable listing of all environmental enforcement actions.

Criminal Environmental Enforcement Actions: A listing of criminal charges from environmental offenses in the past 90 days.

Past Administrative and Civil Enforcement Actions: A listing of civil and administrative environmental enforcement actions from 1994 to mid-2001.

Fish and Wildlife

Inland Bays Shellfish Aquaculture Map: A map-based tool that provides site-specific information helpful for selecting shellfish aquaculture lease locations in the Inland Bays.

Mosquito Control Section Spray Zone Map: Online map of mosquito control spray areas, with data (updated daily) to show planned mosquito spraying.

Report Atlantic Sturgeon: An online reporting app to allow the public to report any interaction with Atlantic Sturgeon, alive or dead.

Outdoors and Recreation

Delaware State Parks Passes and Surf Fishing Permits: Online sales of annual passes to Delaware State Parks and of surf fishing permits.

Play Outside: A map-based, mobile-friendly app to find parks, natural areas, trails and more.

Digital DNREC: Online ePermitting tools to manage your hunting and fishing licenses, hunter education information (and more).

Fishing and Hunting Licenses: Licenses, permits, stamps, and passes for recreational fishing and hunting, and for the use of Delaware Wildlife Areas.

Delaware Boat Registration: Online boat registration tools (Login required).

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