North CarolinaReservoirGaston County

Mountain Island Lake

Mountain Island Lake is a reservoir of some 3,281 acres on the catchment =, in North Carolina. You will find it in Gaston County. It is managed by Duke Energy.

Photo: Ken Lund from Reno, Nevada, USA · CC BY-SA 2.0 · Wikimedia Commons

CountiesGaston County

Coordinates35.3639, -80.9394

Surface area3,281 acres

Rivercatchment =

Managed byDuke Energy

Swimming beaches on Mountain Island Lake

No named swimming beach is mapped yet for this lake. Access is through agency day-use areas and boat ramps listed below. We add beach pages only when we can confirm a name, coordinates and an operating agency.

Mountain Island Lake on the map

Lake center, swimming spots and access points.

Get directions

Weather and water temperature

Air temperature and wind from Open-Meteo. Water temperature only when the lake has a public sensor.

Weather data by Open-Meteo

Mountain Island Lake at a glance

Its coordinates are 35.3639, -80.9394. The surface sits around 648 feet above sea level. Water leaves through the catchment =.

Nearby water includes Lake Norman (North Carolina, 8 mi), Lake Wylie (South Carolina, 20 mi) and Lookout Shoals Lake (North Carolina, 28 mi). North Carolina has 29 lakes on this site in total.

There is no water temperature sensor here, so only air conditions are shown. Water quality is monitored unevenly on inland lakes, so posted notices are the most reliable guide. Most North Carolina day-use areas open for the summer season and close outside it.

Ask the managing agency directly if the level matters for your trip. Water level is missing from this page on purpose: no public feed covers Mountain Island Lake.

Shoreline access on lakes like this one is often informal and unsigned. The nearest mapped swimming spot is Grandfather Ranger District on Lake James, roughly 59 miles away. The federal and state datasets behind this guide list no named beach at Mountain Island Lake. That does not mean there is no access, only that none is catalogued.