Highlight • Lake
Round Valley Reservoir
Hiking
5.0
(5)
Round Valley Reservoir, located in Clinton Township in Hunterdon County, New Jersey, is a significant man-made lake known for its exceptionally clear, deep blue waters. Formed in 1960 by flooding a natural valley, this vast reservoir is nestled against the scenic Cushetunk Mountain, offering a picturesque natural escape in central New Jersey. At an elevation of approximately 123 meters, it serves as a vital water supply for the region and a popular destination for outdoor enthusiasts.
Visitors consistently praise the reservoir for its pristine environment and the wide array of activities available. The crystal-clear waters, reaching depths of up to 180 feet, are a major draw, providing excellent conditions for swimming, boating, and even SCUBA diving. Many are captivated by the natural beauty of the area, with the surrounding parkland and woodlands supporting diverse wildlife, including various bird species like bald eagles and ospreys.
Before heading out, it's helpful to know that while the reservoir is open year-round, swimming is strictly permitted only in designated areas. The terrain around Round Valley Reservoir offers a mix of easy paths and more challenging trails, so appropriate footwear is recommended for hiking or exploring. Parking is available at various trailheads within the Round Valley Recreation Area, making access convenient for most visitors.
The reservoir is amazing any time of the year, offering unique experiences across the seasons. During warmer months, it's ideal for family-friendly activities such as picnicking, fishing, and enjoying the designated swimming beach. Cooler weather brings opportunities for invigorating hikes, wildlife spotting, and even cross-country skiing or sledding when conditions allow. The best time to visit often depends on the specific activities you plan to enjoy.
While specific route data is not provided, the Round Valley Recreation Area features numerous hiking, biking, and horseback riding trails that wind through the diverse landscape. Many of these are loop trails, offering varying lengths and difficulty levels suitable for different fitness levels. Exploring these trails provides excellent opportunities to discover notable landmarks, viewpoints, and natural features around the reservoir.
Beyond the clear waters and scenic trails, visitors often highlight the unique history of the reservoir, with tales of a submerged farming community adding a layer of intrigue. The chance to spot wildlife, from various fish species like lake trout to raptors soaring overhead, creates memorable moments. The sheer scale of the reservoir, the largest by volume in New Jersey, also leaves a lasting impression on those who visit.
To explore the many routes and plan your visit, you can find a variety of hiking, cycling, and trail running options around Round Valley Reservoir. Whether you're looking for a leisurely stroll along the shore or a more challenging trek through the woods, komoot offers detailed maps and route suggestions to help you make the most of your adventure in this beautiful New Jersey natural area.
Tips
November 15, 2023
Hiking
May 22, 2025
Hiking
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Nearby routes
Best routes near Round Valley Reservoir
5.0
(1)
8
hikers
6.93km
01:59
170m
180m
The Cushetunk Trail: Short Version offers a delightful journey through wooded hillsides and rocky outcroppings, providing scenic views of the Round Valley Reservoir and passing by Mannon-Sauerland Pond. You'll navigate dirt paths with embedded rocks, encountering short, steep sections that add a bit of a workout to this otherwise easy route. It's a fantastic way to experience the natural beauty of the area without committing to a full day on the trails.
Accessing the trailhead is simple, with parking available within the Round Valley Recreation Area, though keep in mind that entrance fees might apply during peak seasons. If you're hoping for the best views, plan your visit for late fall or winter when the foliage is down, revealing expansive vistas of the reservoir and the Raritan Valley. Dogs are welcome on the trail, provided they are kept on a leash.
This trail is part of a diverse ecosystem known for its wildlife, including bald eagles, which are often spotted during the winter months. The area's varied habitats, from moist seeps to chestnut oaks and tulip trees, make for an engaging hike. It's a great option for those looking for family-friendly activities near Cushetunk Mountain, offering a rewarding experience for beginners and seasoned hikers alike.
5.0
(1)
19
hikers
4.39km
01:11
60m
60m
If you're looking for a refreshing walk with stunning water views, the Round Valley Reservoir loop from Clinton Township is a fantastic option. This easy 2.7-mile (4.4 km) hike offers continuous glimpses of the reservoir's remarkably clear, deep blue waters, often framed by wooded hillsides. You'll gain a gentle 188 feet (57 metres) in elevation, making it a comfortable journey that takes just over an hour, perfect for a relaxed afternoon.
Planning your visit to the Round Valley Recreation Area is generally straightforward, though it's wise to arrive early on busy days to secure parking. The area is a hub for outdoor activities, so you might see others enjoying boating or fishing. While this specific loop is easy and accessible, always check for any local advisories or potential fees for the broader recreation area before heading out.
The Round Valley Reservoir is a true gem in New Jersey, notable for being the deepest lake in the state and the largest by volume. Its pristine waters and scenic backdrop of Cushetunk Mountain make it a unique natural feature. Beyond hiking, the reservoir supports diverse wildlife, including bald eagles and ospreys, adding to the natural appeal of this popular destination.
5.0
(2)
11
hikers
17.1km
04:55
420m
420m
This Round Valley Reservoir hiking route offers a fantastic blend of challenging terrain and stunning vistas. You'll traverse varied paths, from dirt and gravel to rugged, rocky sections as you climb Cushetunk Mountain. The highlight is undoubtedly the expansive, scenic viewpoints overlooking the deep blue Round Valley Reservoir, framed by dense, undisturbed forest, making it a truly immersive experience.
Planning your visit to this area is straightforward, though arriving early for parking is always a good idea, especially on busy days. For the best views, consider hiking in late fall or early winter when the leaves have fallen, opening up the sightlines from the ridgeline. This moderate 10.6-mile (17.1 km) loop, with 1374 feet (419 metres) of elevation gain, typically takes around 4 hours and 55 minutes to complete.
What makes this trail particularly notable is its unique geological setting; Cushetunk Mountain is a horseshoe-shaped formation resulting from an ancient volcanic event, cradling the impressive Round Valley Reservoir. The trail system also allows for various loop configurations, offering flexibility for different distances and challenges, and even provides opportunities for wilderness camping along the reservoir's southeastern shoreline.
Details
Informations
Elevation 120 m
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18°C
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Max wind speed: 15.0 km/h
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Frequently Asked Questions
Are there specific trails recommended for different difficulty levels at Round Valley Reservoir?
Yes, the Round Valley Recreation Area offers a variety of trails ranging from easy paths suitable for a leisurely stroll to more challenging routes. While specific named trails aren't detailed here, visitors can expect options for different fitness levels, including loop trails of varying lengths. It's always recommended to check trail maps at the park or through resources like komoot for current conditions and difficulty ratings before heading out.
What are the parking arrangements and potential fees at Round Valley Reservoir?
Parking is available at various trailheads within the Round Valley Recreation Area. While the intro mentions availability, it's important to note that parking lots can fill up quickly, especially during peak season or on weekends. It's advisable to arrive early to secure a spot. Information regarding potential entrance or parking fees should be checked directly with the New Jersey State Park Service before your visit.
Is Round Valley Reservoir suitable for dog walking, and are there specific dog-friendly trails?
Round Valley Reservoir is generally dog-friendly, but dogs must be kept on a leash at all times. While specific 'dog-friendly' trails aren't explicitly designated, most hiking trails within the recreation area are suitable for leashed dogs. Always remember to clean up after your pet to maintain the pristine environment.
What unique natural features or viewpoints can be found around Round Valley Reservoir?
The reservoir itself is a significant natural feature, known for its exceptionally clear, deep blue waters and being the largest by volume in New Jersey. It's nestled against the scenic Cushetunk Mountain, which offers picturesque backdrops and potential viewpoints. The area is also home to diverse wildlife, including raptors like bald eagles and ospreys, making wildlife spotting a notable natural attraction.
Are there any cafes, pubs, or accommodation options conveniently located near Round Valley Reservoir?
While the immediate vicinity of the reservoir is focused on natural recreation, the surrounding towns in Hunterdon County, such as Clinton, offer various dining options including cafes and pubs. For accommodation, visitors can find hotels, motels, and bed & breakfasts in nearby communities. There is also a unique opportunity for wilderness camping within the park, accessible by backpacking or boat, for those seeking a more immersive outdoor experience.
What are the best activities for families with young children at Round Valley Reservoir?
Round Valley Reservoir offers several family-friendly activities, especially during warmer months. These include picnicking at designated areas, enjoying the lifeguarded swimming beach, and fishing. The park also features easy walking paths that are suitable for younger children. Wildlife spotting, such as observing birds, can also be an engaging activity for families.
What should hikers wear when visiting Round Valley Reservoir, considering the varied terrain and seasons?
Given the varied terrain and seasonal changes, hikers should wear appropriate footwear, such as sturdy hiking boots or shoes, to navigate both easy paths and more challenging trails. Layered clothing is recommended, as temperatures can fluctuate, especially between shaded areas and open spaces. In colder months, warm, waterproof layers are essential, while lighter, breathable clothing is best for summer. Don't forget sun protection and plenty of water.
What winter activities are available at Round Valley Reservoir when conditions allow?
When conditions permit, Round Valley Reservoir transforms into a winter wonderland offering unique activities. Visitors can enjoy invigorating hikes through snow-covered landscapes, cross-country skiing, and sledding. It's a beautiful time for wildlife spotting, as the quiet environment can make animals more visible. Always check park conditions and weather forecasts before planning a winter visit.
Is it possible to go wild swimming or swim outside of designated areas at Round Valley Reservoir?
No, swimming at Round Valley Reservoir is strictly permitted only in designated, lifeguarded areas. The reservoir is a vital water supply and has a history of drownings, earning it the nickname 'Bermuda Triangle of New Jersey.' For safety and environmental protection, visitors must adhere to all posted regulations regarding swimming.
What kind of fish can anglers expect to catch at Round Valley Reservoir, and are there any special regulations?
Round Valley Reservoir is renowned for its diverse fish population and clear, cool waters. It's one of only two lakes in New Jersey with naturally reproducing lake trout and has set multiple state records for freshwater sport fish. Anglers can also expect to catch smallmouth bass, brown trout, rainbow trout, American eel, chain pickerel, yellow perch, sunfish, rock bass, and bullhead catfish. Specific fishing regulations, including catch limits and licensing requirements, are set by the New Jersey Division of Fish and Wildlife and should be consulted before fishing.