Lake Norman
How Lake Norman Was Made
North Carolina’s largest lake is not a lake at all in the geological sense. It is a reservoir, finished in the early 1960s, and everything above the waterline today sits on ground that Duke Power bought, cleared and drowned on purpose.
Why Duke built it
Cowans Ford was the last and largest link in a chain the Duke interests had been building along the Catawba River since the beginning of the century. Southern Power Company was formed in 1905 by James B. Duke and Dr. Gill Wylie, with engineer William States Lee Sr., on Wylie’s idea that the fall of the Catawba could be harnessed the way Niagara had been. Station followed station down the river for the next sixty years.
By the time the company — by then Duke Power — turned to Cowans Ford, the North Carolina Historic Preservation Office records that the project captured about 85 percent of the river’s remaining available fall. The same state evaluation is explicit about the purpose, and it is worth being precise here because it is often told as a simple power story: the dam was built for hydroelectric generation and for cooling water for steam and nuclear plants. The cooling reservoir came first; the plants that would use it came later.
Building the dam
Duke Power broke ground on September 28, 1959. The structure is an earthen dam with a concrete gravity spillway at its center, 1,279 feet long, carrying eleven Tainter gates. The project cost about $62 million. At completion it was described as the fourth largest hydroelectric station by installed capacity in the United States.
The powerhouse holds four vertical-shaft Kaplan turbines rated at 87,500 kilowatts each, for 350 megawatts installed. Units one through three came online in 1963; the fourth followed in 1967. It remains Duke Energy’s largest conventional hydroelectric station.
A note on the numbers
Published figures for the dam’s overall length and height vary widely between sources — the state evaluation says nearly 7,000 feet, other references say considerably more, and the difference may turn on whether the saddle dike is counted. The same is true of the lake’s maximum depth. Where a number is genuinely contested, this series says so rather than picking the one that reads best.
Filling the valley
The gates closed in 1962 and the water began to rise. The state historic preservation office puts the filling at roughly sixteen months; other accounts say the lake reached full pond across 1963 and into 1964. What is not in doubt is the scale of what went under. Duke bought roughly 30,000 acres of farmland. Around 70 roads were affected, 40 miles of electric and telephone line were relocated, and 17 miles of gas pipeline were rebuilt. The 1916 steel truss at Beattie’s Ford was demolished on July 3, 1962.
Two textile mill villages, a scattering of antebellum houses, more than a dozen churches and burying grounds, and the ford where General William Lee Davidson was killed in 1781 all went beneath the water. That story is told separately in the communities Lake Norman covered.
The lake by the numbers
| Measure | Figure |
|---|---|
| Surface area | Approximately 32,500 acres, about 50 square miles |
| Full pond elevation | 760 feet above mean sea level |
| Storage | 1,093,600 acre-feet |
| Maximum length | 33.6 miles |
| Maximum width | 9 miles |
| Shoreline | Commonly given as approximately 520 miles; Duke-derived sources say 538 |
| Counties | Catawba, Iredell, Lincoln and Mecklenburg |
| Hydro capacity | 350 MW installed, four Kaplan units |
Where the name came from
The lake is named for Norman Atwater Cocke, who lived from 1884 to 1974. He came to Southern Power Company as an attorney in 1906, became a director and vice-president in 1927, and served as president of Duke Power from 1947 until he retired on January 1, 1959 — nine months before the groundbreaking. NCpedia records that the impoundment was named for him in recognition of his service to the company.
What the lake does now
Lake Norman is one of eleven reservoirs in Duke Energy’s Catawba-Wateree hydroelectric project, which runs more than 225 river miles across nine North Carolina and five South Carolina counties. The original federal license dated from 1958 and expired in 2008; a new forty-year license was issued on November 25, 2015. Duke operates the lake seasonally within a narrow band of full pond and has a drought protocol that pulls it lower when inflows fail.
The cooling role the dam was built for arrived on schedule. Marshall Steam Station in Catawba County went commercial in 1965. McGuire Nuclear Station followed on the Mecklenburg shore in 1981 and 1984. In September 1962, with the water still rising, Duke donated 1,328 acres on the northeastern shore for what opened in 1965 as Duke Power State Park and is now Lake Norman State Park.
For the towns that grew up around the shoreline afterwards — Huntersville, Cornelius, Davidson, Mooresville, Sherrills Ford and Denver — the lake is the single fact that reorganized everything else.
How we know what the lake covered
Most of what circulates about Lake Norman’s making is close to right and wrong in the details. Here is the same story told against the documents, with the disputed figures marked as disputed.
| Where the accounts differ | What the record will actually support |
|---|---|
| Who built it | Duke Power Company broke ground on September 28, 1959. The state’s own history blog calls the builder “Southern Power Company”; that was the 1905-era predecessor name and should not be repeated for 1959. |
| When it was finished | The gates closed in 1962 and the dam is dated 1963. Accounts of when the lake reached full pond range from 1963 to 1964. There is no single defensible completion date. |
| Shoreline | About 520 miles is the figure used by the state parks service and most sources; material drawn from Duke says 538. Either way it is an approximation, not a survey. |
| Maximum depth | Commonly given as 112 feet. That figure traces to a single encyclopedia infobox and is not confirmed by Duke Energy, the USGS or the state, so this article does not assert it. |
| The dam’s own dimensions | The state evaluation says nearly 7,000 feet long; another widely copied source says 8,738 feet — a gap of some 1,700 feet, probably over whether the saddle dike counts. No height figure is confirmed at all. |
| National Register status | The State Historic Preservation Office found the dam eligible for listing in 2016. Eligible is not listed, and it is not listed. |
The single strongest document behind this article is the North Carolina Historic Preservation Office’s evaluation of the Cowans Ford hydroelectric development, which is where the spillway dimensions, the dual hydro-and-cooling purpose, the road and utility relocation counts and the July 1962 demolition of Beattie’s Ford Bridge all come from.
Frequently asked questions
When was Lake Norman finished?
Duke Power broke ground at Cowans Ford on September 28, 1959, closed the gates in 1962, and completed the dam in 1963. Sources differ on exactly when the lake reached full pond, with accounts placing it in 1963 or 1964.
Why was Lake Norman built?
For two stated reasons: hydroelectric generation, and a supply of cooling water for steam and nuclear generating plants. The North Carolina Historic Preservation Office evaluation of the project records both purposes.
Who is Lake Norman named after?
Norman Atwater Cocke, president of Duke Power from 1947 until January 1, 1959. He had joined the company as an attorney in 1906.
How big is Lake Norman?
Approximately 32,500 acres, about 33.6 miles long and up to 9 miles wide, with a full pond elevation of 760 feet. It is the largest man-made body of fresh water in North Carolina.
What counties does Lake Norman touch?
Four: Catawba, Iredell, Lincoln and Mecklenburg. That is why property, custody and school questions around the lake so often cross county lines.
Sources for this article
Family law on all four sides of the lake
Lake Norman touches Catawba, Iredell, Lincoln and Mecklenburg counties, and which one your case belongs in is not always obvious. Adkins Law is in Huntersville, minutes from the water.
Adkins Law, PLLC · 9620 Sherrill Estates Road, Huntersville, NC 28078
Keep reading
This article is local history, offered for general interest. It is not legal advice, and reading it does not create an attorney–client relationship. Historical accounts are drawn from the sources listed above; where sources disagree, that is noted in the text. For advice about your own situation, speak with a licensed North Carolina attorney.