# Event Details - **Event Name**: FOPOS Land Stewardship Volunteer Day // Saturday, June 13th - **Event Start and End Date**: Sat, 13 Jun, 2026 at 10:00 am – Sat, 13 Jun, 2026 at 03:00 pm (-04:00) - **Event Description**: Join FOPOS for a land stewardship volunteer session at the Billy Johnson Mountain Lakes Nature Preserve in Princeton.About this EventVolunteer with the Friends of Princeton Open Space (FOPOS) on Saturday, June 13th. There will be two volunteer sessions; the morning session is from 9 a.m. to 11 p.m. and the afternoon session is from 12 p.m. to 2 p.m. Come to one or both. Bring a friend!Volunteers will work under the guidance of the FOPOS stewardship staff to perform ecological restoration work and invasive species removal in the Billy Johnson Mountain Lakes Nature Preserve.What to expect: Our volunteer sessions start with a short presentation about the scope of work for the day. We will then walk to the project site where volunteers will learn to identify and remove invasive plants. The stewardship skills learned at these sessions can easily be applied to restoring habitat in your own backyard.Why this work is important: The current focus is the 25-acre riparian restoration project that buffers Mountain Lake and portions of its feeder streams. Riparian areas play an essential role in protecting water quality by slowing down stormwater and filtering out pollutants before they enter the water system. Water that flows through Mountain Lakes Park ultimately finds its way into the Raritan River, an important drinking water source for central New Jersey. Riparian areas also provide critical habitat for birds, insects, and aquatic life.Meetup Location: Mountain Lakes House Parking LotDirections & Parking: We will meet at the Mountain Lake House parking lot, located within the Billy Johnson Mountain Lakes Nature Preserve. Here is a link to the parking lot location on Google Maps & Apple Maps. The address of the Preserve is 57 Mountain Avenue, Princeton, NJ 08540; this will bring you to the entrance of the Preserve, not our meet-up location. To get to the Mountain Lakes House parking lot, look for the white gate along Mountain Avenue, marked by a series of black mailboxes along the road. Drive slowly down the long paved driveway. The gravel parking lot will be on your left, approximately 1/2 mile down the driveway.Event waiver: Please complete this event waiver - fopos.org/waiver. This needs to be completed once per calendar year.About FOPOS: Since 1969, FOPOS has been working to preserve and protect natural spaces in the greater Princeton area. As a part of our work, we rely on volunteers to help make progress when it comes to restoration work, such as our current forest and riparian restoration projects in the Billy Johnson Mountain Lakes Nature Preserve.Can't make this session? Consider making a donation to show your love for our local environment! All donations support our year-round stewardship work.Looking to register for multiple volunteer sessions this season? Register HERE. - **Event URL**: https://allevents.in/princeton/fopos-land-stewardship-volunteer-day-saturday-june-13th/100001990101599456 - **Event Categories**: fitness, Meetups, Nonprofit - **Interested Audience**: - total_interested_count: 0 ## Ticket Details - **Ticket Price Range**: min: 0, max: 0, currency: USD ## Event venue details - **city**: Princeton - **state**: NJ - **country**: United States - **location**: Mountain Lakes House - **lat**: 40.3633252 - **long**: -74.6760731 - **full address**: Mountain Lakes House, 57 Mountain Ave, Princeton, United States ## Event gallery - **Alt text**: FOPOS Land Stewardship Volunteer Day // Saturday, June 13th - **Image URL**: https://cdn-az.allevents.in/events4/banners/38307516cbf0c5655bc630c6677a7caf0b3b02e459b87b7a099a8ce9ad0e1415-rimg-w1200-h648-dc344414-gmir.jpg?v=1779462581 ## FAQs - **Q**: When and where is FOPOS Land Stewardship Volunteer Day // Saturday, June 13th being held? - **A:** FOPOS Land Stewardship Volunteer Day // Saturday, June 13th takes place on Sat, 13 Jun, 2026 at 10:00 am to Sat, 13 Jun, 2026 at 03:00 pm at Mountain Lakes House, 57 Mountain Ave, Princeton, United States. - **Q**: Who is organizing FOPOS Land Stewardship Volunteer Day // Saturday, June 13th? - **A:** FOPOS Land Stewardship Volunteer Day // Saturday, June 13th is organized by Friends of Princeton Open Space. ## Structured Data (JSON-LD) ```json [ { "@context": "https://schema.org", "@type": "Event", "name": "FOPOS Land Stewardship Volunteer Day // Saturday, June 13th", "image": "https://cdn-az.allevents.in/events4/banners/38307516cbf0c5655bc630c6677a7caf0b3b02e459b87b7a099a8ce9ad0e1415-rimg-w1200-h648-dc344414-gmir.jpg?v=1779462581", "startDate": "2026-06-13T10:00:00-04:00", "endDate": "2026-06-13T15:00:00-04:00", "url": "https://allevents.in/princeton/fopos-land-stewardship-volunteer-day-saturday-june-13th/100001990101599456", "eventStatus": "https://schema.org/EventScheduled", "location": { "@type": "Place", "name": "Mountain Lakes House", "address": { "@type": "PostalAddress", "streetAddress": "57 Mountain Ave", "postalCode": "08540", "addressLocality": "Princeton", "addressRegion": "NJ", "addressCountry": "US" }, "geo": { "@type": "GeoCoordinates", "latitude": "40.3633252", "longitude": "-74.6760731" } }, "eventAttendanceMode": "https://schema.org/OfflineEventAttendanceMode", "description": "Join FOPOS for a land stewardship volunteer session at the Billy Johnson Mountain Lakes Nature Preserve in Princeton.", "offers": [ { "@type": "AggregateOffer", "availability": "https://schema.org/InStock", "priceCurrency": "USD", "availabilityStarts": "2026-05-21", "availabilityEnds": "2026-06-13T15:00:00-04:00", "validFrom": "2026-05-21", "lowPrice": "0.00", "highPrice": "0.00", "price": "0.00", "url": "https://allevents.in/princeton/fopos-land-stewardship-volunteer-day-saturday-june-13th/100001990101599456" }, { "@type": "Offer", "availability": "https://schema.org/InStock", "priceCurrency": "USD", "availabilityStarts": "2026-05-21", "availabilityEnds": "", "validFrom": "2026-05-21", "url": "https://allevents.in/princeton/fopos-land-stewardship-volunteer-day-saturday-june-13th/100001990101599456", "price": 0, "name": "Register to volunteer from 9AM to 11AM" }, { "@type": "Offer", "availability": "https://schema.org/InStock", "priceCurrency": "USD", "availabilityStarts": "2026-05-21", "availabilityEnds": "", "validFrom": "2026-05-21", "url": "https://allevents.in/princeton/fopos-land-stewardship-volunteer-day-saturday-june-13th/100001990101599456", "price": 0, "name": "Register to volunteer from 12PM to 2PM" }, { "@type": "Offer", "availability": "https://schema.org/InStock", "priceCurrency": "USD", "availabilityStarts": "2026-05-21", "availabilityEnds": "", "validFrom": "2026-05-21", "url": "https://allevents.in/princeton/fopos-land-stewardship-volunteer-day-saturday-june-13th/100001990101599456", "price": 0, "name": "Make a donation! (Optional)" } ], "organizer": [ { "@type": "Organization", "name": "Friends of Princeton Open Space", "url": "https://allevents.in/org/friends-of-princeton-open-space/22650962", "description": "Friends of Princeton Open Space (FOPOS), founded in 1969, is a non-profit, tax-exempt organization devoted to acquiring open space in Princeton for preservation, protecting natural resources, maintaining accessibility to trails, and providing environmental education. Throughout the Princeton region, FOPOS works with groups to support efforts to preserve and protect open space and the environment. In 2019, FOPOS will celebrate it's 50th year.Since its founding, FOPOS has helped to establish over 1,000 acres of parkland and a network of trails that nearly encircles Princeton.  Through grants and the contributions of hundreds of people in the community, FOPOS has helped to raise over $5 million for the purchase of land and acquisition of easements on properties that might have been bulldozed for development.  In addition to land preservation, FOPOS also leads in stewardship, from creating and maintaining hiking trails, boardwalks and footbridges, to the removal of invasive species and the replanting of native varieties.  FOPOS also sponsors community programs and activities, such as nature walks and educational workshops, and advocates for governmental actions that protect our water, land, animals and plant communities. If you have an interest in spending time outdoors, enjoying nature and making a difference in the community, please contact us at info@fopos.org to get involved in trail-building and ecological restoration." } ] } ] ```