What FOSC does

Friends of Sligo Creek (FOSC) offers events year round in support and appreciation of Sligo Creek and adjacent parkland. Litter clean-up and invasive plant clear-out events are among the most popular FOSC activities in the spring, summer and fall. FOSC also sponsors guided outdoor explorations of different aspects of Sligo Creek flora and fauna. A wide variety of other programs throughout the year educate neighbors and users of the park about Sligo Creek’s strengths and challenges. FOSC also monitors the creek, advocating for civic policies that will support a healthier Sligo.

FOSC invites you to visit the creek, volunteer at an upcoming event, attend a program, advocate for the Creek, and join FOSC.

Saturday, Feb. 15, 9:00am – 11:00am
Two events:


1) Litter Cleanup with FOSC & Potomac Conservancy
at Sligo Creek and East-West Highway, Chillum

Please join Friends of Sligo Creek stewards and the Potomac Conservancy for a trash cleanup at this beautiful part of Sligo Creek. Please be sure to register here so that you can receive any updates as we approach the cleanup date. Thank you! Lots of street parking available.

2) Litter Cleanup with FOSC & Potomac Conservancy
at Green Meadows Park,
6310 Sligo Parkway, Chillum
Please join Friends of Sligo Creek stewards and the Potomac Conservancy for a trash cleanup at Green Meadows Park. Show this park some love! Please come out and support this part of Sligo Creek. Be sure to register here so that you can receive any updates as we approach the cleanup date. Thank you! Nearby parking is available.

– Nick Clements, Litter Hotspot coordinator

Sunday, February 16, 9:00am
Morning walk in Kestrel Meadow

7100 16th Place, Hyattsville, MD
Meet where 16th Place dead ends at the meadow.

Join us for a morning walk in Kestrel Meadow, where the early birds are getting the worms and the plants are preparing their spring frenzy. We walk the path that leads to Sligo Creek, making a loop around the meadow when possible.

Bring binoculars if you have some. There can be some muddy spots this time of year, and it’s always good to wear long pants and socks to deter ticks and protect against poison ivy.

– Kristin Zimmer, FOSC Board Member and Section 1 Steward

Sunday, February 16th, 1:00pm – 3:00pm
Litter Cleanup event in honor of Dr. Martin Luther King, Jr.
Wayne Ave and Piney Branch Rd. (FOSC Section 4 – See the map). Meet at the Sligo Creek Parkway tennis courts adjacent to Piney Branch Rd. We’ll remove litter and help the creek and parkland welcome spring.

See the Calendar page for details on kids under 14 years old and SSL hours.

– Chris Richardson, FOSC Section 4 Steward

Join FOSC

FOSC logo

Sligo Creek connects us. Please join FOSC and help protect and restore the Creek for everyone in our community. It’s simple to do and can be free if you wish. Membership gives you early notice of events and the FOSC newsletter.

You can make a donation too, either online (simple and secure) or by check to FOSC, P.O. Box 11572, Takoma Park, MD 20913. Thank you!

Support Friends of Sligo Creek and help the creeks thrive in 2025!

Your support is key to our success.

    -Sweep the Creek and Litter Hotspot clean-ups
    -Weed Warrior work sessions to remove invasive plants
    -Salt, E. coli, and other testing to understand threats to water quality in the watershed
    -Advocacy work on many issues to protect the creeks
    -Water WatchDogs pollution reporting
    -Natural history posters for the kiosks
    -Outreach to neighbors in English, Spanish and Amharic

 

News & Updates

FOSC in the News

FOSC’s efforts to support the plastic bag ban at the County Council hearing last Tuesday were noted in Bethesda Magazine’s Jan. 14th article, Supporters turn out for proposed plastic bag ban, citing environmental impact. Several members of the FOSC Advocacy committee testified in favor of the ban. Similar bans in Prince George’s and other nearby counties have been successfully implemented with little drama.

Winter scenes from Sligo and Long Branch

(Photos by Nathalie Peter – LB near Becca Lilly park, Lenore Boulet – footbridge over Sligo, and Susan DeFord – snow on native coneflowers)

The FOSC Salt Monitoring Program measured extremely high salt levels throughout Sligo Creek, Wheaton Branch, Long Branch, and Takoma Branch starting with our first snow storm and continuing to date. We are collating the data as of Feb. 6, 2025. The initial report is available on the Salt Monitoring Initiatives page under the Water Quality Monitoring programs tab.

Email the Water Quality committee at [email protected] to learn more and become a tester.

Sligo and Long Branch are in fine color this fall

This short YouTube video shows the beautiful fall pictures taken by longtime FOSC member Michael Wilpers in the Park. Thank you, Michael, and thank you Ed Murtagh for creating the video.

Check out the many other FOSC videos on our Youtube channel.

FOSC Action Hub

Sligo Creek Water WatchDog mascot

Report water pollution ASAP!
Send an email to:
[email protected]

You play an important role protecting Sligo. Please report any pollution you see in the creek or heading into a storm drain ASAP, with photos, which help County investigators find and fine the pollutors.

A lone duck swimming in polluted water in between sewer pipes crossing the stream.

A lone duck swims in polluted water between sewer pipes crossing Brashears run near Maple Ave. in March 2024. (Sally Taber photo)

Winter 2025 Top Invasives

 Invasive: Italian Arum

Italian Arum is back in force around Sligo Creek and Long Branch. It has spread from nearby yards. One of the EDRR (Early Detection, Rapid Response) invasive species, it has many little “daughter” corms attached to its main corm which makes it difficult to remove completely. Dig it out carefully. Screen the loosened soil for small “daughter” corms. There is some evidence that spraying with glyphosate is effective at killing all its corms.

FOSC Videos

See many more on the FOSC Youtube Channel

 FOSC on iNaturalist

Pine Siskins at Wheaton Branch Ponds by Stephen Davies

Heard about FOSC on iNaturalist.org but uncertain how to navigate the site or contribute your own observations? Expert birder and iNaturalist… Read more

FOSC on YouTube

Support FOSC

Donate to Friends of Sligo Creek

FOSC on Facebook

Get Involved

  • Participate in your community
  • Meet your neighbors
  • Improve your surroundings
  • Enhance your skill set
  • Advocate for the Creek
  • Arrange a group activity for your club or group
  • Receive the monthly eNewsletter
  • Get early notice of events and special opportunities
  • Have your name forwarded to your Section Steward for hands-on events
  • Contribute to special projects
  • Fund outdoor events, expert talks, equipment for invasive plant/litter removal, the kiosks in the park, water quality testing, and more
  • Support FOSC’s outreach to schools, civic groups, and all communities
  • Tell us about your experience at a FOSC event
  • Suggest an activity
  • Voice your concern about an environmental issue