Patapsco Valley State Park

Avalon Entrance Closures - posted December 18, 2013

Due to major water line repairs, the Avalon entrance of Patapsco Valley State Park on South Street (Elkridge, MD) will be closed on Mondays, Tuesdays, Wednesdays and Thursdays, sunrise to sunset from January 6, 2014 through January 20, 2014 and then again from February 3, 2014 through February 24, 2014. The park will remain open with an alternate entrance off of Levering Avenue. Follow the detour signs on Route 1. No vehicular, bike or foot traffic will be permitted through the South Street entrance, during the closures.

Avalon Area Road Repairs - updated January 2014

The Avalon entrance road will be under construction due to water main work. The work will be starting before the end of September and will continue with good weather until February 28, 2014. No road closures will occur, however traffic will be limited to one lane with flaggers in place. For further information please contact 410-461-5005.

Dogwood Road Bridge Construction and Detour

Baltimore County Department of Public Works is currently in the final design phase for planning for the replacement of Bridge# B-0347 Dogwood Road over Dogwood Run in Baltimore County, Maryland. This project will require minor impacts to the Patapsco Valley State Park. Construction of the proposed project is expected to begin in July 2014. During construction Dogwood Road will be closed and traffic will be detoured via signed, detour routes. It is anticipated that construction will take five to six months. For more information, please refer to the attached Public Notice and associated detour map.

Preventative Vegetation Management

Please be advised that Baltimore Gas and Electric will be performing preventative vegetation management through areas of Patapsco Valley State Park. For information on this type of trimming work, refer to the following wepage:

Sediment Temporarily Impacts Fishing Below Bloede Dam

Ellicott City, Md. (March 30, 2012) - Since the removal of Simkins Dam, sediment has made its way down the Patapsco River and is now filling deeper holes and pools below Bloede Dam. The Department of Natural Resources (DNR) reminds recreational anglers that this is only temporary. The occurrence is an expected and natural process that was accounted for during initial planning.

WARNING: Paddlers & Anglers

Recent storms have scoured out areas of the Patapsco River at the old Union Dam site leaving exposed concrete and rebar, creating hazardous conditions. Park staff has clearly marked the hazards and will work to remove them as soon as possible. The Patapsco River and river bank remain closed through this construction area until further notice.

Secure Your Valuables

Secure your vehicle before you hit the trails at Patapsco Valley State Park. Valuable items left in plain sight in your vehicle are an invitation for theft. Leave your valuables at home, secure them on your person, or in secure, non-visable areas of your vehicle, such as your trunk.

Special Events

Any groups requiring more than two facility rentals for one event (campsites, shelters, or any combination, thereof) must contact the park directly to make these arrangements. This will assure that park management will be able to assist you in making your event a success. Note: This service may be subject to a $25 Special Event Fee. Contact the Park Headquarters at 410-461-5005.

Inflatable Play Equipment Notice

Inflatable play equipment and trampolines are prohibited on site without a permit. This permit must be obtained 3 weeks in advance by the reservation holder of the event. To obtain a permit and the necessary paperwork required, contact the park office at 410-461-5005, Monday through Friday between 8:30 a.m. and 4 p.m. Due to the need for water conservation, any device requiring water (for instance portable swimming pools, dunk tanks, etc.) are NOT allowed in the park.

Hollofield Directions

From the Beltway (I-695) take Rt. 40 West ( Exit 15). Follow Rt. 40 West 2 miles to the park entrance on the right.
From I-70/Rt. 29 take Rt. 29 South ( Exit 87) to Rt. 40 East 2 miles to the park entrance on the right.

Patapsco Valley State Park
8020 Baltimore National Pike
Ellicott City MD 21043
GPS 39.295459 76.788858

Park Headquarters is located in this area.
Monday- Friday 8:30 a.m.-4 p.m. Closed all State Holidays.
Park maps, information, and hunter permits are available from this office.


Main Office: 410-461-5005
Toll Free: 1-800-830-3974
Reservations: 1-888-432-2267

Hours of Operation

9 a.m. to Sunset

Contact the Park Service

  • Toll Free: 1-800-830-3974
    (Annapolis Office)
  • Reservations: 1-888-432-2267
  • Park Watch: 1-800-825-7275
  • Email Us

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