Top 18 Lakes around Longmont

Longmont offers several popular lakes for diverse outdoor activities. McIntosh Lake is known for its tranquil atmosphere and non-motorized water sports, while Union Reservoir is a hub for sailing, windsurfing, and has a designated swim beach. St. Vrain State Park, with its many ponds, is excellent for fishing and birdwatching, and Boulder Reservoir features traffic-free trails ideal for cycling.

Many lakes around Longmont offer stunning views. At McIntosh Lake, you can enjoy picturesque views of the Rocky Mountains, including Longs Peak. Twin Lakes provides excellent vantage points for observing the Flatirons and foothills of Boulder, especially in the morning when the water is calm.

The lakes around Longmont are enjoyable year-round, but the best time depends on your preferred activities. Spring and fall offer pleasant temperatures for hiking and birdwatching. Summer is ideal for water sports and swimming at Union Reservoir's beach. Winter can be beautiful for quiet walks and observing wintering birds, including bald eagles at St. Vrain State Park.

Yes, there are many trails. McIntosh Lake features a 3.5-mile flat trail popular for walking, running, or cycling. Golden Ponds offers scenic trails, and St. Vrain State Park has 6.5 miles of flat, easy paths. For more extensive options, you can explore various hiking routes around Longmont, such as the Dickens Farm South Loop or the Dry Creek Greenway, by visiting the Hiking around Longmont guide.

For non-motorized water sports, McIntosh Lake is excellent with its calm waters. Union Reservoir is a prime location for a wider range of water sports, including sailing, windsurfing, kiteboarding, paddleboarding, and kayaking, with rentals often available. St. Vrain State Park also permits hand or foot-propelled vessels and electric trolling motors on most of its ponds.

Longmont offers several great fishing spots. Union Reservoir is a major draw, stocked with species like trout, bass, catfish, and more. St. Vrain State Park is an excellent year-round fishing destination with multiple ponds stocked with various fish, including designated trophy bass ponds. Golden Ponds is also recognized as a good place for fishing.

Birdwatching opportunities are abundant around Longmont's lakes. McIntosh Lake attracts various waterfowl and occasional bald eagles. St. Vrain State Park is a popular birding spot, hosting the state's largest rookery of Great Blue Herons and providing chances to see migrating waterfowl, songbirds, and raptors. Lagerman Agricultural Preserve is also known for excellent year-round birdwatching.

Yes, several lakes are great for families. St. Vrain State Park is particularly family-friendly, offering easy trails and camping. McIntosh Lake has a nice playground area and calm waters suitable for non-motorized boating. Union Reservoir features a designated swim beach with shallow entry points, perfect for families. Golden Ponds also offers accessible trails and a boardwalk for scenic views.

Union Reservoir features a designated dog off-leash area with water access on its south side, making it a great spot for dogs to swim and play. Many of the multi-use trails around lakes like Lagerman Agricultural Preserve are also dog-friendly, but always check local regulations for leash requirements and specific access rules.

Cycling is a popular activity around Longmont's lakes. McIntosh Lake has a 3.5-mile trail suitable for cycling, and Boulder Reservoir offers traffic-free lakeside trails. St. Vrain State Park also has 6.5 miles of biking trails. For more road cycling options, you can explore routes like the Longmont Loop and Saint Vrain Greenway in the Road Cycling Routes around Longmont guide.

Yes, Union Reservoir is the only nearby lake with a designated swim beach. It is open seasonally and offers a sandy shoreline with shallow entry points, making it ideal for swimming and wading.

McIntosh Lake is a 265-acre tranquil retreat known for its mountain views and is exclusively for non-motorized water sports. Union Reservoir, at 736 acres, is a larger, more active hub allowing motorized boats (with restrictions) and offering a designated swim beach, sailing, and windsurfing, in addition to paddle sports and fishing.

Lagerman Reservoir generally offers a quieter experience with open water and multi-use trails. It's a good option if you're looking for a more serene setting for walking or birdwatching away from larger crowds.