Lake McConaughy

State: Nebraska. Type: reservoir/state recreation area in Keith County, 9 miles north of Ogallala. Nebraska's largest reservoir: 35,700 acres surface area, 22 miles long, 76 miles of shoreline, up to 142 feet deep. Formed 1936-1941 by Kingsley Dam on the North Platte River; managed as a State Recreation Area by the Nebraska Game and Parks Commission.

Lake McConaughy, known locally as "Big Mac," is Nebraska's largest reservoir, impounded behind Kingsley Dam on the North Platte River near Ogallala in the western part of the state. Built between 1936 and 1941 with Depression-era public works and federal loan financing, the dam and lake were named for Charles W. McConaughy, a grain merchant and former Holdrege mayor who championed the irrigation project. Today the lake is operated by the Central Nebraska Public Power and Irrigation District, while the surrounding shoreline is a State Recreation Area run by the Nebraska Game and Parks Commission. The lake is best known for its wide, sandy beaches, unusual for an inland reservoir, along with fishing, boating and water sports. Immediately below the dam sits smaller Lake Ogallala, a rockier, quieter counterpart popular for fishing and camping. A visitor center near the dam includes a water interpretive exhibit, gift shop and theater for those wanting context on the reservoir's role in the region's irrigation and power system.

Lake McConaughy sits in Keith County in western Nebraska, about 9 miles north of Ogallala via U.S. Highway 26 and Nebraska Highway 61. The reservoir stretches roughly 22 miles along the North Platte River valley and is bordered by Lake Ogallala immediately east of Kingsley Dam.

Western Nebraska has a semi-arid continental climate with hot summers, cold winters, and relatively low humidity and rainfall compared to the eastern part of the state. Summer daytime temperatures commonly reach the 80s and 90s Fahrenheit, making the lake's beaches popular for swimming, while winters bring freezing temperatures and occasional heavy wind. Specific monthly averages were not confirmed from the sources used for this entry.

Summer (June through early September) is the peak season for swimming, boating and beach camping, coinciding with the reservation-required camping window of May 20 to September 10. Spring and fall offer cooler weather for fishing and hiking with fewer crowds, though some facilities and services scale back outside the summer months.

Kingsley Dam and Lake McConaughy were built between 1936 and 1941 as an irrigation and flood-control project on the North Platte River, at a cost of roughly $43 million funded partly by a Public Works Administration grant and a federal loan, and the construction employed more than 1,500 workers during the Depression. The dam is 162 feet tall, 3.1 miles long and 1,100 feet wide at its base. A hydroelectric plant was later added at the dam and went online in 1984. The lake and dam take their name from Charles W. McConaughy, a Holdrege grain merchant and former mayor associated with the irrigation district's founding. The reservoir is operated today by the Central Nebraska Public Power and Irrigation District (CNPPID), while recreation on its shores is managed by the Nebraska Game and Parks Commission.

Swimming and sunbathing on the lake's broad sand beaches are a signature draw, unusual for an inland Nebraska reservoir. Boating, water-skiing, personal watercraft use and sailing are popular given the lake's large open surface. Fishing is a major activity on both Lake McConaughy and the smaller, rockier Lake Ogallala next to the dam, which is particularly known for trout fishing. Beach camping directly on the shoreline is available by reservation, and hunting is permitted in season in parts of the recreation area. The visitor center near Kingsley Dam offers a water interpretive exhibit, gift shop and theater for a change of pace from the water-based activities.

Kingsley Dam itself, one of the largest hydraulic-fill dams in the country, is a notable engineering landmark visitors can view. The visitor center near the dam houses the water interpretive center. Lake Ogallala, the smaller "tailwater" lake just east of the dam, offers a quieter, rockier alternative shoreline with its own camping and fishing.

The lake is reached via U.S. Highway 26 and Nebraska Highway 61 from Ogallala, about 9 miles to the south. Ogallala sits directly on Interstate 80, making the lake an easy stop for travelers crossing western Nebraska by car. No commercial airport serves Ogallala directly; the nearest larger airports are found in North Platte or further afield, and driving is the practical way to reach the lake.

Specific gatehouse or visitor-center hours were not confirmed from the sources used for this entry, though Nebraska Game and Parks has noted expanded gatehouse hours in recent years; confirm current hours on outdoornebraska.gov before visiting. Beach areas are generally accessible during daylight hours for day use.

A Nebraska Game and Parks daily park entry permit is required for any motorized vehicle entering the recreation area; as of the 2026 season this was priced at $7 for Nebraska-plated vehicles and $14 for non-Nebraska-plated vehicles (confirm current pricing on outdoornebraska.gov). Camping at Lake McConaughy carries an additional surcharge of $2 per night above standard state park camping rates, and all camping during the peak season (May 20-Sept. 10) requires an advance reservation.

A half-day to full day covers a beach visit, swimming and boating, while many visitors extend their stay to a weekend or longer with lakeside camping.

Beach and campground camping directly at Lake McConaughy and neighboring Lake Ogallala State Recreation Areas is the most distinctive lodging option, requiring reservations in peak season. The town of Ogallala, about 9 miles south, offers a range of chain hotels and motels along Interstate 80 for visitors who prefer not to camp. Nearby Keith County communities offer additional smaller lodging options.

Ogallala, the nearest town, has a range of casual dining and fast-food options typical of an Interstate 80 travel hub. Limited concessions may be available seasonally at the lake itself; most visitors bring their own food for beach days or plan meals in Ogallala.

Ogallala's historic Front Street and its Boot Hill cemetery, tied to the town's cattle-drive-era history, are a short drive south. Lake Ogallala, immediately below Kingsley Dam, is easily combined with a Lake McConaughy visit for a quieter fishing-focused stop.

There is no commercial airport in Ogallala; the closest regional air service is generally found in North Platte, roughly an hour's drive east, with Interstate 80 providing the main road route to and from the lake. A personal or rental vehicle is effectively required to reach the lake.

Because the lake is large and open, conditions can shift quickly with wind, so boaters and swimmers should check forecasts before heading out. Beach camping areas can be exposed to sun and wind, so sun protection and secure tents/canopies are worthwhile. As with any open water, keep young children within sight, and be aware that Lake Ogallala's rocky shoreline differs from McConaughy's sandy beaches in footing. For any emergency, dial 911.

Sunscreen, hats, and plenty of drinking water are essential given the exposed beach setting and western Nebraska's dry summer heat. A tent stake kit or windbreak is useful for beach camping, since the open shoreline can be breezy. Fishing gear, a cooler, and boating safety equipment (life jackets) are worth packing for lake-based activities.

Reserve a campsite well ahead for the May 20-September 10 peak season, since camping is reservation-only during this window. Carry a current park entry permit or plan to purchase one at the gatehouse, since it's required for any vehicle entering the recreation area. Pairing a visit with Ogallala's Front Street historic district makes for an easy add-on to a lake day.

Dial 911 for any emergency. For park-specific questions, contact the Nebraska Game and Parks Commission; the statewide camping reservation call center is 1-844-637-2757 (1-844-NEPARKS).

Nebraska Game and Parks Commission - Lake McConaughy - https://outdoornebraska.gov/location/lake-mcconaughy/

This section is being updated and will be available shortly.

This section is being updated and will be available shortly.

This section is being updated and will be available shortly.