Colorado Beaches, Reservoirs and Lakes

1. Boulder Reservoir

Boulder Reservoir is a scenic 700-acre manmade lake within the northern section of the city of Boulder, serving as the main water supply reservoir for the Northern Colorado Water Conservancy District. The reservoir, which was constructed in 1955, serves as the anchor for Boulder Reservoir Regional Park, which is overseen by the city's Department of Parks and Recreation and offers a wide variety of seasonal outdoor activities.

Public swimming beaches are offered during the summer months, along with day-use and rental picnic areas with picnic tables, charcoal grills, and horseshoe and volleyball courts. Populations of rainbow trout, saugeye, and black crappie are stocked at the reservoir for anglers, with ice fishing opportunities available during colder months when the lake is frozen over. Other popular activities at the park including boating, waterskiing, wildlife watching, sunbathing, and cycling.

Address: Boulder Reservoir, 5565 North 51st Street, Boulder, CO 80301, Phone: 303-441-3461

2. Blue Mesa Reservoir

Blue Mesa Reservoir is the largest body of water in Colorado, contained within the Curecanti National Recreation Area, which has been overseen by the National Park Service since 1965. The 29-mile reservoir is one of three reservoirs located within the recreation area, along with the Morrow Point and Crystal Reservoirs, and was constructed in the 1960s along the upper portion of the Gunnison River.

It is home to the United States' largest cokanee salmon fishery, making it one of the state's prime sites for public fishing. Two marinas are also offered, along with boat launches and a variety of hiking and horseback riding trails. Windsurfing and waterskiing are popular activities during the summer months, while ice fishing is popular during colder weather conditions. Traditional and group campgrounds are offered at the site, including boat-in campsites.

Address: Blue Mesa Reservoir, 102 Elk Creek, Gunnison, CO 81230, Phone: 970-641-2337 x205

3. Medano Creek

Medano Creek is a unique seasonal location within Great Great Sand Dunes National Park and Preserve, which spans more than 107,000 acres throughout the Sangre de Cristo Mountain Range in southern central Colorado and preserves North America's tallest collection of sand dunes. The creek, which is named for the Spanish word for sand dune, receives surge flows from the snow melt of nearby peaks, which cascades onto the nearby dune ridges and produces high wave conditions throughout the spring and early summer months.

At peak flow times, especially in May and June, the creek becomes a veritable paradise for beach activities such as inner tubing and wakeboarding, earning it the nickname "Colorado's Natural Beach." Hiking, sandboarding, sandsledding, and four-wheel driving are popular activities at the site during the off season, when creek conditions steady out to only a few inches deep.

Address: Medano Creek, 11999 State Highway 150, Mosca, CO 81146, Phone: 719-378-6395

4. Chatfield State Park

Chatfield State Park is a lovely Denver-area state park that is open to the public year-round between 5:00am and 10:00pm, centered around the 1,423-acre Chatfield Reservoir, which receives waters from the South Platte River. The park is a popular spot for natural activities throughout the year and is home to the Audubon Center at Chatfield State Park, which offers workshops and nature programming for visitors of all ages. During the summer months, a public swimming beach is operated at the park, with a full-service marina offering boat rentals and boat launches. Fishing, jet skiing, waterskiing, and wildlife watching are popular activities during the summer months, with trails for snowshoeing and cross-country skiing offered for use during the winter. A number of hiking, biking, and horseback riding trails are also offered, with 197 campsites and RV hookups available for overnight visitor stay.

Address: 11500 N. Roxborough Park Rd, Littleton, CO 80125, Phone: 303-791-7275

5. Grand Lake

Grand Lake is Colorado's largest natural lake, located along the western edge of the beautiful Rocky Mountain National Park. The lake is home to the world's highest altitude yachting club and is a popular site for boaters, waterskiiers, and fishers throughout the warmer months. A full-service marina is offered, with boat and paddleboard rentals available for visitors, and a number of sandy areas offer opportunities for sunbathing, swimming, and beachfront activities. During the winter months, visitors can enjoy snowmobiling, snowshoeing, and cross-country skiing, along with sleigh rides offered at the nearby Winding River Resort. The nearby mountain resort town of the same name is home to a number of bustling shops, restaurants, art galleries, and theaters, hosting annual special events such as a summer concert series.

Address: Grand Lake Chamber Of Commerce, P.O. Box 57, Grand Lake, CO 80447, Phone: 970-627-3372

6. Cherry Creek State Park Beach

Cherry Creek State Park Beach is a scenic destination in the Denver, Colorado area and provides a wide array of both land and water activities for people who love the outdoors. The Cherry Creek Reservoir is a 800-surface-acre reservoir surrounded by a prairie landscape and is open to the public for fishing, paddle boarding, jet skiing, and boating. During the summer season, the lake also offers an area for swimming.

For visitors wanting to stay in the state park after dark, Cherry Creek features a modern campground open throughout the entire year with more than 100 campsites. There’s also a dog park.

Address: 4201 S Parker Rd, Aurora, CO 80014

7. Jackson Lake State Park

Jackson Lake State Park is a popular state park located within Morgan County northeast of the city of Orchard, anchored around the 2,411-acre Jackson Reservoir, which was constructed in the early 20th century and receives its water from the nearby South Platte River. The park and reservoir, which should not be confused with Mancos' Jackson Lake, is home to beautiful spacious beachfront areas that have been named as one of America's top 15 park beaches by Reserve America. In addition to seasonal swimming opportunities, fishing, boating, canoeing, kayaking, jet skiing, and waterskiing are also popular activities at the reservoir. Land recreation opportunities include hunting, biking, hiking, and an OHV motocross track. 260 campsites are offered at the park, including ADA-compliant facilities and group campsites.

Address: 26363 County Road 3, Orchard, CO 80649, Phone: 970-645-2551

8. Horsetooth Reservoir

Horsetooth Reservoir is an expansive reservoir within Colorado's Larimer County, located above the western edge of the city of Fort Collins along the Dakota Hogback. The reservoir, which was originally constructed in 1949 as part of the Bureau of Reclamation's Colorado-Big Thompson Project, stretches for 6.5 miles from north to south, spanning approximately one mile across. It serves as a municipal water source for area communities such as Fort Collins and Greeley, named in honor of the nearby Horsetooth Mountain.

During the summer months, the reservoir serves as a popular outdoor recreational destination, attracting more than 570,000 visitors each year. A designated swimming beach is maintained seasonally, with opportunities for boating, canoeing, kayaking, and shore fishing also offered. On the shoreline, visitors can hike and mountain bike in areas such as the Foothills Trail.

Address: 4200 W County Rd 38 E, Fort Collins, CO 80526, Phone: 970-498-5610

9. Dillon Reservoir

Dillon Reservoir, also known as Lake Dillon, is a manmade freshwater reservoir in Summit County bordering the towns of Dillon, Frisco, and Silverthorne. The reservoir, which was constructed in 1963, serves as a municipal reservoir for the city, operated under the supervision of Denver Water. Visitors can enjoy a plethora of outdoor activities at the site throughout the year, including boating, kayaking, canoeing, and fishing at the beachfront areas of the reservoir.

Seven miles of hiking and biking trails are offered throughout the recreational area around the reservoir, with more than 350 campsites available for tent and RV hookups. Waterfowl hunting and cross-country skiing are permitted at designated areas, with a number of special events hosted at the reservoir each year, including an annual Fourth of July fireworks display. Dillon Reservoir Map

10. Ridgway State Park

Ridgway State Park is a beautiful state park in Ouray County, located approximately 14 miles northeast of the city of Ouray and four miles north of the city of Ridgway. As Colorado's westernmost public park, the park offers stunning scenery and ample opportunities for water activities at Dallas Creek and Pa-co-chu-puk, including excellent fishing conditions for rainbow, brown, and cutthroat trout. Swimming is permitted during the summer months at beachfront areas, along with a marina providing lake access for boats, canoes, and kayaks. Limited hunting opportunities are also offered, along with hiking and biking trails, volleyball courts, and opportunities for snowshoeing and cross-country skiing during the winter months. 283 campsites are offered, including several yurts and rental cabins.

Address: 28555 Hwy. 550, Ridgway, CO 81432, Phone: 970-626-5822