Please check our main Recreation & Parks webpage for all updates. 

Please call our inclement weather lines about the status of camps, programs, events, facilities, and parks: www.howardcountymd.gov/inclementweatherlines.

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Alpha Ridge Park

Address: 11685 Old Frederick Rd/Md 99, Marriottsville, MD 21104

Phone: 410-313-4700

Hours: Sunrise to Sunset, or as posted

Directions: Google MapsPDF

Exclusive to this 72-acre park has a target archery range, a regulation-size hockey rink with bleachers, and an observatory. There are 2 tennis courts, 3 ball diamonds, 2 multipurpose fields, 2 playgrounds and 2 identical 60-person capacity picnic pavilions (first-come, first-serve basis unless reserved), waiting for you to Get Up, Get Out and Get Active!

Park Information

Rules and Regulations

To Report a Park Concern

To report damage or park concerns, leave a message on the Department's hot-line, 410-313-DIRT (3478). For emergencies dial 911.

Park Rules

The purpose of these regulations is to provide a safe and peaceful use of County parks and park land; for recreational and educational benefit and enjoyment; and for the protection and preservation of the property, facilities and natural resources of the County. Park land and recreation programs conducted on park land are open for use by all members of the public regardless of race, religion, creed, color, sex, national origin, or disability. Click on the links below for more information about our regulations.

Howard County Code 

Title 19 - Recreation and Parks

Things to Remember  

  • Help to keep your parks beautiful -- please take your trash and recyclable items home. Take only pictures and leave only footprints. 
  • Dogs are prohibited on all Department of Recreation & Parks athletic fields.
  • Dogs must be secured by a leash or lead and under control of a responsible person capable of immediate and effective restraint of the animal.
  • Dog droppings may attract disease-harboring pests, and even a friendly dog can scare the birds, wildlife and park visitors. Clean up after your dog and keep it leashed; it's the law. 
  • All of our parks are inhabited by a wide variety of wildlife such as deer, snakes, fish, rabbits, insects and birds. Please do not disturb them; remember, this is their home.

Howard County Bans Smoking in All County Parks

In a continued effort to be a model public health community and preserve its rank as Maryland’s Healthiest County, Howard County was the first jurisdiction in Maryland with a total ban on smoking and tobacco products of any kind in all the 57 County-owned parks and recreational areas. Enforcement will take the form of requesting voluntary compliance. However, if a smoker does not extinguish a smoking product, park staff will remind them of the new policy and could request exiting the property if they choose to continue smoking.

For more information about the ban, to read the Executive Order or to learn more about smoking cessation programs, click here.

Amenities/Natural History

  • Regulation-size inline hockey rink with bleachers 
  • Howard Astronomical League Observatory. The observatory (open only for events) includes a 15-foot diameter dome that houses the Paul S. Watson telescope, a 12-inch Newtonian telescope originally built in 1937 and restored for use today. The observatory will host monthly star parties and other programs coordinated between Recreation & Parks and the Howard Astronomical League. 
  • 2 tennis courts 
  • 3 ball diamonds
  • 2 multipurpose fields 
  • 2 playgrounds (Playground 1, Playground 2)
  • 2 identical 60-person capacity picnic pavilions (first-come, first-serve basis unless reserved) 
  • Target archery range