The largest body of water in Yellowstone National Park is Yellowstone Lake. The lake is 350 km2 in size and has 180 km of shoreline. It is 2,357 m above sea level. The lake has a 42 m average depth, although its maximum depth is at least 120 m. The largest freshwater lake in North America above 2,100 meters is Yellowstone Lake.

Camping areas, hiking paths, and a fishing bridge can be found at the northernmost point of Yellowstone Lake. Since the late 1800s, fishing for Yellowstone cutthroat trout has been a well-liked activity. Today, fishing is still permitted from June 15 to the first Sunday in November.

A well-liked activity on the lake is to join a one-hour guided boat excursion to take in the breathtaking and tranquil surroundings. Along the trails that surround the lake, canoeing, kayaking, and boating are also popular activities. In the winter, ice nearly 0.91 m thick covers most of the lake, with the exception of the shallow water that surrounds the hot springs. By early December, the lake freezes over, and it may stay frozen through late May or early June.

Surface area: 136 sq mi (350 km2)

Location: Teton County, Wyoming

The Green River is dammed behind the Flaming Gorge Reservoir to form Wyoming's largest reservoir, Flaming Gorge Reservoir. The dam's construction started in 1958 and was finished in 1964. When measured at an elevation of 1,841 m above sea level, the reservoir has surface area of 42,020 acres.

Flaming Gorge National Recreation Area, run by Ashley National Forest, offers visitors hiking, boating, fishing, windsurfing, camping, backpacking, cross-country skiing, and snowmobiling. There are paid campsites near to the dam, along Highway 191, and free campsites all around the region. All U.S. Forest Service-run campgrounds close for the winter, with the exception of Dripping Springs near Dutch John.

Along Highway 530 on the west side of the reservoir, at the marinas at Buck Board and Lucerne, there are more public camping areas. Colorado River Cutthroat trout, Brown trout, Rainbow trout, Lake trout, Kokanee salmon, Smallmouth bass, Burbot, and Common carp are just a few of the numerous fish species that may be found in the reservoir and other lakes. Fishing is very common on the Green River, especially below the dam. The river's crystal-clear water and stunning structure make it a premier fly fishing stream.

Surface area: 42,020 acres (170 km2)

Location: Sweetwater County, Wyoming

Jackson Lake is located in Wyoming's Grand Teton National Park in the northwest. This lake is one of the largest lakes in Wyoming. Its overall size is 25,540 acres (103.40 km2), and it offers a range of other leisure activities in addition to drawing a lot of tourists throughout the summer. The Jackson Lake Dam, initially erected in 1911, expanded in 1916, and renovated in 1989, increased the size of this natural lake. Farmers in Idaho use the top 10 meters of the lake as part of the Minidoka Project for irrigation purposes in accordance with water rights legislation passed before Grand Teton National Park was established. The lake is a relic of extensive glacial erosion from the Yellowstone Plateau to the north and the nearby Teton Range to the west.

The largest island in the lake, Elk Island, is one of more than 15 that dot its waters. Spend a night at the remote camping area on Elk Island for a distinctive camping experience. You can reserve this area at the visitor centers in Moose, Jenny Lake, or Colter Bay, but make a reservation well in advance because this is a well-liked camping location for both residents and tourists. There are more developed campgrounds at Signal Mountain, Colter Bay, and Lizard. Additionally, Jackson Lake's numerous bays and shores offer the ideal location for anyone looking to catch up on some summer reading or work on their tan.

Surface area: 25,540 acres (103.40 km2)

Location: Teton County, Wyoming

In the U.S. state of Wyoming, in the counties of Platte and Converse, there is a reservoir called Glendo Reservoir that is situated on the North Platte River. The Glendo Dam creates the reservoir. Two hydroelectric turbines inside the earth-fill dam, which is 639 meters long and 58 meters high, can produce 38 megawatts of power. Glendo Dam builds a reservoir with a surface area of roughly 18,659 acres (75.51 km2) and a maximum storage capacity of 1,170,505 acre-feet of water, which is largely used for irrigation and flood control.

The lake's main attraction is water sports, including fishing, boating, and water skiing. Along its shorelines, there is a marina, a boat ramp, a 2.4-kilometer sandy beach, and 72 kilometers of mountain biking routes.

Within the state park, there are more than 500 campsites for tents and RVs. It's a nice site to spend a few days because it has picnic spaces, playgrounds, and boat ramps. Numerous wetlands birds use Glendo Reservoir as a crucial resting and feeding location. Passerine species that migrate along the North Platte River and those that nest there find it to be very alluring.

Surface area: approximately 18,659 acres (75.51 km2)

Location: Platte & Converse Counties, Wyoming

In the southwest corner of Yellowstone National Park in Wyoming, Shoshone Lake is a 33 km2 backcountry lake in the United States that is located at an elevation of 2,376 m. It is located in the Lewis River's headwaters, which is a tributary of the Snake River. Shoshone Lake, according to the U.S. Fish and Wildlife Service, is the biggest wilderness lake in the lower 48 states that is not accessible by road. The lake contains the Yellowstone Caldera.

Since the early 19th century, when fur trappers first noticed Shoshone Lake, it has gone by a variety of names. The lake may have been visited by Jim Bridger in 1833, but he undoubtedly returned in 1846. In 1839, trapper Osborne Russell went to the lake. The lake was known as Snake Lake at the time. The lake was designated as DeSmet's Lake on a map made in 1851 by Father Pierre-Jean De Smet. When he traveled through the region in 1863, Walter DeLacy, a Montanan mapmaker, gave the lake the name DeLacy's Lake.

Surface area: 8,050 acres (32.6 km2)
Location: Yellowstone National Park, Teton County, Wyoming, U.S.

Fontenelle Reservoir is an artificial reservoir located in southwest Wyoming. Although the east end of the Fontenelle Dam and a small piece of the reservoir is really in northeastern Sweetwater County, it is almost wholly contained inside Lincoln County.

The Colorado River Storage Project, impounded by Fontenelle Dam, uses the reservoir primarily as a storage reservoir, keeping Wyoming water in the state to uphold Wyoming's water rights, with the secondary goal of generating electricity. Mining and energy production in the area both use water from Fontenelle Reservoir. Although originally intended to provide irrigation water for agriculture, the irrigation component was scaled back as it became clear that Wyoming's high semi-desert region would be difficult to effectively irrigate.

The reservoir was hastily drained in 1965 and 1986 due to ongoing dam leakage issues and worries about dam failure. The reservoir provides camping areas and boat launching ramps for recreational use. For brown, cutthroat, and rainbow trout, fishing is possible.

The Stepp Ranch, one of the few black ranching families in Wyoming in the 1960s, controlled the land that is now the Fontenelle Reservoir and dam. The Stepps fought in court for their land, but finally fell short. Since the beginning of the 19th century, the Stepp family has owned the land.

Surface area: 8,000 acres (32 km2)
Location: Lincoln / Sweetwater counties, Wyoming, USA

Leigh Lake is located in Wyoming, in the United States, which is part of Grand Teton National Park. From north to south, the glacially created lake measures 4.5 km in length and 3.9 km in width. The glacially formed lake is situated at a height of 6,877 feet (2,096 meters) above sea level and has an area of 1,792 acres (7.25 km2). The lake is at the end of both Paintbrush and Leigh Canyons, which are both located just southeast of Mount Moran. The Leigh Lake Trail, an accessible hike over level terrain that travels 1.6 km along String Lake's eastern coast, leads to the lake. On the National Register of Historic Places is the Leigh Lake Ranger Patrol.

Leigh Lake is a glacially formed lake that is located at the confluence of Leigh and Paintbrush Canyons. Despite not being a particularly large lake, its surroundings make it one to remember. It can only be reached by trekking the Leigh Lake Trail from the south, at the North Jenny Lake Junction.

You may reach the southern end of Leigh Lake only by trail or by non-motorized boat by hiking along the eastern shore of String Lake and farther. As a result, a very flat, simple walk offers views of a less crowded, peaceful lake and mountains. For a longer hike, continue along Leigh Lake's eastern shore, which offers more beach access and unimpeded views.

Surface area: 1,792 acres (7.25 km2)

Location: Teton County, Wyoming

Jenny Lake is one of the largest lakes in Wyoming, located in Grand Teton National Park in the U.S. state of Wyoming. This lake is part of Grand Teton National Park. A terminal moraine that presently impounds the lake was created by glaciers pushing rock debris during the last glacial maximum that cut Cascade Canyon roughly 12,000 years ago. The lake has a surface area of 482 ha and is thought to be 278 m deep. With its abundance of hiking paths, picturesque boat excursions, and easy access to the main climbing routes up the greatest peaks of the Teton Range.

Glaciers pushed rock debris into a hole that became the Cascade Canyon and the lake's home more than 12,000 years ago, forming Jenny Lake as a result. The lake is a prominent feature of the Grand Teton National Park, and numerous hiking trails, like the Jenny Lake Trail, encircle it. .

Many day and overnight hiking excursions begin at Jenny Lake. The 210 m elevation rise on the 11.4 km Jenny Lake Trail, which round the lake, makes the trail a reasonably simple one. Once in Cascade Canyon, though, the elevation rises quickly.

Surface area: 1,191 acres (4,82 km2)

Location: Teton County, Wyoming

Emma Matilda Lake is located in the American state of Wyoming, near Grand Teton National Park. The lake has the name of William O. Owen's wife, who with three other climbers was the first to reach the top of Grand Teton in 1898. The 4.3 km long natural lake is accessible through a 1.6 km hike from Two Ocean Lake's parking lot or a somewhat longer hike from Jackson Lake Lodge. The Teton Range can be seen in the distance from the lake's 17.2 km Emma Matilda Lake Trail, which encircles it.

For a longer trek, hikers can descend to Emma Matilda Lake, where they can complete a 10.7-mile round. Hikers will encounter views of the Teton Range as they round the lake's edge. Early through midsummer, the region is covered in wildflowers, which brighten the scenery and create breathtaking views. Keep your bug spray handy! Emma Matilda Lake is a favorite spot for mosquitoes because of the moist, marshy landscape. The 390-hectare lake can only be reached on foot by traveling 1.6 kilometers along a trail from Jackson Lake Lodge or the parking lot of nearby Two Ocean Lake.

Surface area: 960 acres (3,9 km2)
Location: Teton County, Wyoming, US

Phelps Lake is located in the U.S. state of Wyoming, near Grand Teton National Park. The park's southernmost region includes the natural lake, which is situated at Death Canyon's entrance. There are several hiking paths close to the lake, with the most well-known being a 2.9-kilometer roundtrip climb to the Phelps Lake overlook. This is one of the largest lakes in Wyoming.

The Phelps Lake Overlook provides access to Phelps Lake. Hikers descend to the shoreline via a series of switchbacks from the overlook. Visitors can reach the Phelps Lake Loop Trail from there and go for however long or short they like. It's an arduous climb back to the viewpoint on the hike there. For the return trek, visitors who are not accustomed to the altitude should allow extra time and pack lots of water.

The "jumping rock", which serves as a natural diving board, is the most famous feature of Phelps Lake. The 300-hectare lake is nine meters below the rock, which is located on the lake's northern shore.

Surface area: 750 acres (3 km2)

Location: Grand Teton National Park, Teton County, Wyoming, US

In the U.S. state of Wyoming, Grand Teton National Park contains Two Ocean Lake. The 3.9 km long glacially created lake can be accessed from a parking lot next to it. The 10.3 km Two Ocean Lake Trail circles the lake while traveling through woodlands and open spaces. Emma Matilda Lake, which is larger, is 1.6 kilometers away.

Two Ocean Pass, located 40 km to the northeast, where Pacific Creek flows west and Atlantic Creek flows east, inspired the name of Two Ocean Lake, which is located in the northeastern section of the park close to Moran. The moniker Two Ocean Lake is misleading because it only empties into Pacific Creek.

Grand Teton National Park's Two Ocean Lake Area is a nice place to relax and take a lovely, relatively leisurely stroll around a magnificent lake. This well-liked location offers breathtaking scenery and great opportunities to see animals, such as trumpeter swans, Canada geese, other types of waterfowl, moose, black bears, and the endangered grizzly bear. In Grand Teton National Park, Two Ocean Lake is a little lake surrounded by lush meadows, towering aspens, and dense forest.

Surface area: 806 acres (3,26 km2)

Location: Lincoln / Sweetwater counties, Wyoming, USA

Lower Slide Lake is one of the largest in Wyoming, situated in Bridger-Teton National Forest, in the U.S. state of Wyoming. On June 23, 1925, the Gros Ventre landslide dammed the Gros Ventre River, creating the natural lake. The lake used to be much larger, but on May 18, 1927, less than two years later, a portion of the rock dam fell, resulting in disastrous flooding downstream. Lake and Snake River fine-spotted cutthroat trout, mountain whitefish, and other fish are naturally occurring and stocked in the lake's waters.

Lower Slide Lake is well-known for its abundance of lake trout, mountain whitefish, and fine-spotted cutthroat trout from the Snake River. While non-motorized boats can access the lake via the Slide Lake Boating Site at the far western extremity of the 260-hectare lake, boats can approach the lake from the Atherton Creek Boating Site on the lake's northern side.

On the lake's northern shoreline, in addition to boat ramps, there is a peaceful campground with 22 spots and a picnic area. Two interpretive areas with expansive lake views and information kiosks may be found at Lower Slide Lake.

Surface area: 650 acres (2,60 km2)

Location: Bridger-Teton National Forest, Teton County, Wyoming