Cheatham Lake Water Levels & Drawdown

Run-of-River, Explained

Cheatham Lake's full pool elevation is 385 feet above mean sea level. Its winter pool elevation is 384 feet. That one-foot difference is the entire seasonal swing on this lake, and it puts Cheatham in a completely different category than the majority of Tennessee's TVA reservoirs, several of which drop 25, 40, or even 44 feet between summer full pool and winter drawdown. The reason is structural: Cheatham is a run-of-river project, which in Corps terminology means the dam does not hold back and release large volumes of water on a seasonal cycle the way a true storage reservoir does. Water moves through the project more or less continuously, following the natural flow of the Cumberland River, with only a small amount diverted for hydropower generation and lock operations. There is no dedicated flood storage capacity being managed here the way there is at Center Hill, J. Percy Priest, or Wolf Creek Dam upstream at Lake Cumberland.

The practical result for a lakefront owner is straightforward: a dock built for Cheatham Lake's summer water level will sit in essentially the same depth of water in January. There is no need to engineer a long floating gangway to reach water that has receded thirty feet from a July shoreline, no seasonal ritual of walking a dock out across exposed mudflats, and no need to time a viewing or a closing around what the property will look like months later at a different pool elevation. This is a genuine, measurable advantage relative to almost every other lake covered on this site's Tennessee list.

What Still Moves the Water Level

A stable managed pool does not mean the water level never changes at all. Because Cheatham Lake has no dedicated flood storage, the Corps may still temporarily lower the pool ahead of a major forecast rain event to create a buffer, and heavy rainfall upstream — particularly runoff from the Nashville metro area draining into the upper reaches of the reservoir — can raise river flow and water levels for a period of days during and after a significant storm. These are short-term, weather-driven fluctuations rather than the seasonal, calendar-driven drawdown cycle that defines lakes like Douglas or Norris, and they typically resolve within days rather than persisting for months.

How the Lock and Dam Actually Operate

Cheatham Lock and Dam, completed between 1949 and 1951, is a non-navigable, gate-controlled spillway dam roughly 800 feet wide, not including the separate lock chamber, and 75 feet tall, consisting of seven tainter gates. During normal operation, water passes through the dam in a controlled but continuous manner appropriate to a run-of-river project. During major flood events, the operation changes: the tainter gates are raised entirely clear of the water and the river is allowed to flow through essentially unimpeded, since the dam's low head design makes normal turbine operation impossible under high-flow conditions and all water must pass through the spillway instead. This is a genuinely different operational mode than a storage reservoir like Center Hill, where the dam actively holds back a large volume of water during a flood event rather than passing it through.

Water releases from Old Hickory Dam upstream directly affect the pool at Cheatham, since Cheatham Lake's upper reaches begin essentially where Old Hickory's tailwater ends. The Nashville District coordinates operations across its full chain of Cumberland River dams — Wolf Creek and Dale Hollow far upstream, Center Hill, J. Percy Priest, Cordell Hull, Old Hickory, Cheatham, and Barkley downstream toward the Ohio River — as a single integrated system, considering rainfall forecasts, existing storage capacity in the true flood-control reservoirs, and downstream flood risk to cities including Nashville and Clarksville when making release decisions at any one project.

How This Compares Lake by Lake

Among the Nashville District's Cumberland River projects, Old Hickory, Cordell Hull, and Cheatham are all classified as run-of-river or hydropower dams without dedicated flood storage, while Wolf Creek, Dale Hollow, Center Hill, J. Percy Priest, and Barkley are true flood control reservoirs that hold back water for extended periods. This distinction is worth understanding precisely because it explains why Cheatham Lake behaves so differently from Dale Hollow's 60-foot drawdown or Center Hill's 20 to 30-foot seasonal swing, despite all being managed by the same Nashville District office. A buyer who understands this distinction can reasonably predict how a Corps-managed Tennessee lake will behave seasonally simply by knowing which category it falls into, without needing lake-specific research every time.

Tracking the Pool Yourself

Both TVA's Lake Level Information website and app and the Nashville District's own project data provide daily water level and discharge figures for Cheatham Lake, and current owners commonly check these before major boating trips even though day-to-day variation is minimal. Buyers can review historical daily data before purchasing to independently confirm just how stable the pool has actually been over recent years, rather than relying solely on the published full-pool and winter-pool elevation figures cited throughout this site.

What the Historical Record Shows

Reviewing several years of daily TVA lake level data for Cheatham Lake confirms the pattern described throughout this page: day-to-day variation rarely exceeds a few inches outside of active flood-management events, and the pool has held remarkably close to its published full and winter pool elevations across multiple years of record. This is worth independently verifying for any buyer who wants more than a published elevation figure — the daily historical data is public and confirms the stability rather than requiring the buyer to take the summary figures on faith.

Where the Data Comes From

A USGS stream gauge below Cheatham Dam provides continuously updated flow and stage data as part of the national water data network, independent of TVA and Corps-published summaries. Buyers who want to cross-reference the official Corps and TVA figures against an independent federal data source can review this gauge's public record directly, giving a third, independently operated check on the stability described throughout this page rather than relying solely on the managing agencies' own published figures.

The One Caveat Worth Remembering

None of this means Cheatham Lake is entirely immune to flooding — the same 2010 Nashville flood event that tested the Cumberland River system's flood-control reservoirs also passed through Cheatham Lake, and the Corps' coordinated management of the full river system, including temporarily lowering Cheatham's pool ahead of the surge, was part of what limited damage downstream. The everyday stability described throughout this page refers to normal operating conditions, not an absolute guarantee against every possible weather event, and buyers should keep that distinction in mind rather than treating the lake as entirely risk-free.