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

Natural History - Species list for this park have been provided by the Howard County Bird Club. The bird club's contribution has been a valuable asset in the gathering of data and documenting the numerous species of flora and fauna found in our county.



Field and Court Rentals

Softball/baseball and multi-purpose fields are available by permit only. Preference is given to sports leagues and community groups. There are reservation, light and tournament fees. Call 410-313-4626 for details. Softball/baseball and multi-purpose field locations are below. Tennis courts are available on a first-come, first-served basis except during scheduled lessons or tournaments.

Park Map

Click here to download the Park Map

Pavilion Rentals

Pavilion Rental

Park pavilions are a great place to hold a birthday party, corporate event, large family gathering, school picnic or any other special occasion. Pavilions vary in size to accommodate any group, and many come equipped with cooking facilities.

The pavilion rental season runs from April 1 through Nov. 30, rain or shine (there are no refunds for inclement weather).

Pavilions are available free on a first-come, first-served basis during the remainder of the year. However, restroom water and water fountains are turned off during winter months and grills may not be available or accessible during this time due to winter maintenance. Your rental may begin as early as 10 AM and must conclude by sunset (times subject to change).  

You MUST leave the park by the designated time of sunset or be charged a late fee of $25 per ½ hour. 

For information about the pavilions or to make a reservation, click here. If you require additional assistance, you may call 410-313-4682 (Monday-Friday, 8am-4:30pm).

Park Pavilion Name
Maximum Capacity
Resident / Non-Resident Fee
Alpha Ridge Park Pavilion 1  
Alpha Ridge Park Pavilion 2

Amenities (included with permit)

  • 16 picnic tables: 14 (8'); 2 (8' ADA)
  • 2 charcoal grills (38" x 36" and 19" x 15"
60 $170 / $205

Contact/Inclement Weather

Howard County Recreation & Parks

7120 Oakland Mills Road

Columbia, MD 21046

410-313-4700 General Information (M-F, 8 AM-5 PM)

410-313-4660 FAX

410-313-4665 TTY (for the hearing impaired)

410-313-PARK (7275) Registration (M-F, 8 AM-4:30 PM)

Inclement Weather/Program Status Information: Alpha Ridge, 410-313-4372

Planning and Development

The proposed  Master Plan  was presented to the Recreation and Parks Advisory Board on September 16, 2009. Thirty citizens attended the discussion of proposed park improvements, which include more adequate parking, new restroom facilities, storage for park equipment, a roof over the roller hockey rink, new lighting, new trails to provide a connected trail system, and small astronomical observatory. Construction at Alpha Ridge Park is complete.  The improvements include a new restroom facility, telescope observatory building and additional parking.