Today, visitors stand along the shores of Lake Jocassee and marvel at its clear blue water, mountain scenery, and hidden waterfalls. Few realize that beneath those waters lies an entire river valley that once stretched through the mountains of South Carolina and North Carolina.
Long before Duke Power built the Jocassee Dam and flooded the valley in the early 1970s, four wild mountain rivers joined together here to create one of the most beautiful river systems in the Southern Appalachians. The Toxaway, Horsepasture, Thompson, and Whitewater rivers carved deep gorges, thundered over waterfalls, and eventually united to form the Keowee River.
The landscape we know today as Lake Jocassee was once home to rushing water, fertile valleys, farms, churches, schools, and communities. It was a world that disappeared beneath the rising lake.
Four Rivers, One Great River
High along the Blue Ridge Escarpment, where South Carolina meets North Carolina, four mountain rivers began their journey south.
Whitewater River
The Whitewater River flowed from the high mountains near present-day Whitewater Falls. Early travelers described the river’s waterfalls as among the most spectacular in eastern North America.
Before modern roads and tourism, visitors compared Whitewater Falls to Niagara Falls. The river plunged hundreds of feet through a rugged gorge before winding toward the valley floor.
Thompson River
The Thompson River flowed through one of the wildest sections of the escarpment. Historic accounts describe quiet pools filled with trout before the river suddenly plunged over dramatic waterfalls on its journey toward the valley below.
Much of the Thompson River remains remote even today, helping preserve the wilderness character that early explorers experienced.
Horsepasture River
The Horsepasture River is still famous for its waterfalls, including Rainbow Falls, Drift Falls, Turtleback Falls, and other cascades that attract hikers from across the Southeast.
Long before Lake Jocassee existed, the Horsepasture joined the Toxaway River in the valley that now lies beneath the lake.
Toxaway River
The Toxaway River carried water from the mountains around present-day Lake Toxaway, North Carolina. After passing through deep gorges and waterfalls, it flowed south toward what would eventually become Jocassee Valley.
Together, these rivers formed the headwaters of the Keowee River.
A Valley Rich in Life
The old Jocassee Valley was far more than wilderness.
Families farmed the rich bottomlands along the river. Churches stood on hilltops overlooking the valley. Children attended local schools. Roads crossed the rivers and connected scattered mountain communities.
The valley contained communities such as:
- Jocassee
- Eastatoee
- Camp Jocassee
- Keowee Town
- Sugar Town
- Fort Prince George
- Areas around Mount Carmel Church
- McKinney Chapel
Many of these locations now lie beneath Lake Jocassee or Lake Keowee.
Residents remembered clear rivers, productive farmland, orchards, fishing holes, swimming spots, and close-knit communities where neighbors often lived miles apart but remained connected through church, family, and shared traditions.
The Rare Flower Found Nowhere Else
One of the valley’s most famous natural treasures was the Oconee Bell.
French botanist André Michaux first collected the Oconee Bell in 1788 near the confluence of the Toxaway and Whitewater rivers.
Today, the flower remains one of the rarest wildflowers in the Southern Appalachians and is found naturally in only a few small areas. It has become a symbol of the region’s unique natural heritage.
The Night Nature Changed Everything
While the construction of Jocassee Dam would eventually transform the valley, another dramatic event reshaped the region decades earlier.
On August 13, 1916, after weeks of heavy rain, the dam at Lake Toxaway in North Carolina failed.
A wall of water rushed downstream through the river system and into the Keowee Valley. Residents scrambled to higher ground as floodwaters roared through the mountains.
Remarkably, no lives were known to have been lost in the flood, but the event became one of the most memorable natural disasters in Upstate history.
The flood served as a reminder that the rivers which sustained life in the valley could also unleash tremendous power.
The Coming of Lake Jocassee
By the 1960s, Duke Power had begun planning a massive hydroelectric project that would forever alter the landscape.
The Jocassee Dam was constructed on the Keowee River, creating Lake Jocassee. Soon afterward, the Keowee Dam created Lake Keowee downstream.
As the waters rose:
- Roads disappeared.
- Farms vanished.
- Churches were relocated or abandoned.
- Cemeteries were carefully moved.
- Historic communities disappeared beneath the surface.
Today, divers occasionally explore remnants of the old valley, while boaters pass above places where families once lived, worshiped, and worked.
The River Lives On
Although the original Keowee River no longer flows through the valley as it once did, its story remains alive.
The shape of Lake Jocassee still follows the outlines of the ancient river channels. The arms of the lake trace the paths once carved by the Toxaway, Horsepasture, Thompson, and Whitewater rivers.
Visitors paddling across Jocassee’s clear waters are often traveling directly above the routes these rivers followed for thousands of years.
The waterfalls still roar in the mountains above. The rivers still flow. The Blue Ridge Escarpment still towers over the landscape.
Only the valley itself has changed.
And beneath the waters of Lake Jocassee lies one of the most fascinating lost landscapes in South Carolina history.
