(Carroll, Howard, Montgomery, Harford, and Cecil counties)

Maryland’s Central region is a mix of rural, suburban and urban areas. The cities of Baltimore and Washington D.C. are located in this region, making it the most populated and urbanized in the state. But the area also features large blocks of protected and natural lands like Patapsco, Susquehanna and Gunpowder Falls State Parks and the C&O Canal National Historic Park. The landscape is characterized by rolling hills and valleys crisscrossed by swift moving streams that feed into larger creeks and rivers. The smaller waterways in this part of the state are typically rocky and shallow and are significantly influenced by periods of drought and/or rain events. The larger waterways, including the Middle Potomac, Patapsco, Patuxent, Gunpowder and Susquehanna rivers, provide excellent recreational boating opportunities.

  • Potomac River Water Trail and the C&O Canal: (Middle Potomac) Cover of Potomac River Water Trail and the C&O Canal - Middle Potomac
    (Washington, Frederick, and Montgomery counties) (Existing and Developing)

    This water trail spans approximately 100 miles of the Middle Potomac River corridor and parallels the C&O Canal National Historic Park between Sharpsburg, MD and Washington D.C. This map set picks up where the Potomac River Water Trail and the C&O Canal: Upper Potomac map set leaves off. Maryland DNR is working in partnership with the C&O Canal National Historical Park and many other state and local agencies that have a presence along this section of the river in Virginia and Maryland, to create a new water trail map set for this portion of the river. An earlier map set for this section of the Potomac River Water Trail was created by the Interstate Commission on the Potomac River Basin in the 1970s but is no longer available. Like the other Potomac River Water Trail map sets, the new maps will show access points on both sides of the river and include information on support facilities like restrooms, hiker-biker sites, fishing, picnic and parking areas. The maps will also feature historic, cultural and natural resource information. Preliminary planning and map updates have begun. The new maps are not yet available. Additional area information can be found at the National Park Service website. Click here to view or download an electronic version of the guide.  

  • Lower Susquehanna River Water Trail
    (Harford and Cecil counties) (Developing)

    Maryland DNR is working with Harford and Cecil counties and the Lower Susquehanna Heritage Greenway to develop a set of four maps depicting this water trail. The project area for this trail stretches from the Pennsylvania line to Swan Harbor in Harford County and to Mill Creek and the Susquehanna Flats in Cecil County. Preliminary planning and mapping has begun. Final maps are not yet available.Kayak on river.

Online Services

Chesapeake Bay Hotline

Call 1-877-224-7229
to report any of the following

  • Boating accident or reckless activity
  • Fish kill or algal bloom
  • Floating debris that poses a hazard to navigation
  • Illegal fishing activity
  • Public sewer leak or overflow
  • Oil or hazardous material spill
  • Critical area or wetlands violation
  • Suspicious or unusual activity