How Much Does the Water Level Change on Watts Bar Lake?

If you are buying on the water, one question matters more than the photos. Will there be water at my shoreline in January the way there is in July?

On Watts Bar Lake the answer is mostly yes. The lake moves about 5 to 6 feet over a year, which is small next to some other East Tennessee lakes. It does move, though. It helps to know why, and how to check a specific property. Tennessee National sits on this lake in Loudon, Tennessee.

How much does Watts Bar Lake go up and down?

About 5 to 6 feet between summer and winter.

Those numbers are elevations above sea level. They are not depths. A reading of 740 feet says how high the surface is, not how deep the water is at your shoreline.

Why does TVA change the level?

Because the lake has several jobs at once.

Watts Bar Lake exists because of a TVA dam on the Tennessee River. TVA runs the reservoir for flood control, navigation, power and recreation. It holds the lake higher in the warm months, when people are on the water. It lowers the lake for winter to make room for winter and spring rain.

The level also moves a little from day to day with rain and dam operations. Heavy rain can push it above the usual range for a short time. That is the flood control job at work.

None of this surprises people who live on the lake. It is the normal cycle, and they plan around it.

Why is the change smaller than on other East Tennessee lakes?

Because Watts Bar is a main-river reservoir with a navigation channel.

The reservoir is navigable for 72 miles, and locks connect it to the rest of the Tennessee River system. Commercial traffic uses that channel, so the water has to stay within a narrow range all year.

Tributary lakes such as Norris or Douglas are a different kind of reservoir. They drop much more in winter. We do not print their numbers here. TVA lists every lake on its lake levels page, so check there if you are comparing. Watts Bar vs Norris vs Douglas Lake looks at the three side by side.

What does a 5 to 6 foot change mean for a buyer?

It matters most where the water is shallow.

• Coves. On a gently sloping shoreline, a few feet of drop can uncover a wide band of bank. On a steep shoreline you barely notice.
• Docks. A fixed dock sits higher above the water in winter. A floating dock rides down with the lake. What counts is how much water is under the boat at 735 feet.
• The marina. Tennessee National has a full-service marina with 140+ boat slips. Ask how the docks sit at winter level. See marina and lake life.
• Views. More shoreline shows in winter. Some people like the look. Some do not.
• Boating. The main channel stays deep enough for navigation. Shallow spots away from the channel are shallower in winter, so slow down until you know them.

What should you ask about a specific waterfront homesite?

Ask how it behaves at the low end of the range, not just the high end.

1. How much water is at this shoreline at 735 feet?
2. Is the homesite on the main channel or in a shallow cove?
3. Can this homesite have a dock? A dock on a TVA lake needs TVA approval, and community rules apply. Get the answer in writing. Marina slip or private dock explains more.
4. What does the shoreline look like in winter? Go and see it. Visiting in winter tells you what to look for.
5. Is any part of the property in a mapped flood zone? Ask for the survey and ask an insurance agent.
6. Where does TVA's property or easement line run? A survey shows it.

If you plan to keep a boat here through the cold months, where to keep a boat in winter covers storage. For questions about the marina itself, use the marina checklist.

How do you check the current lake level?

Go to TVA. Its lake levels page at tva.com lists Watts Bar with the current elevation and what TVA expects next.

Check it before you visit a property, and write the number down. Then you know whether you are seeing the shoreline near the top of the range, near the bottom or in between. A photo taken in July and a visit made in January can look like two different lakes.

The honest part

The lake is managed, not fixed. The numbers on this page are TVA's normal range. Rain and operations move the level inside that range and sometimes outside it for a while.

A view of water in July is not a promise of the same view in January. And one figure from a blog, including this one, should not decide a purchase. Check TVA for the current level. Then stand on the shoreline you are thinking of buying, in more than one season if you can.

One more thing for buyers from the coast. Watts Bar Lake is freshwater. The level changes slowly, over a season and on a published pattern. You can plan around it.

Facts about Tennessee National come from the community. Lake facts come from TVA. Rules, taxes, loans and insurance change, so confirm anything that affects a purchase with the right office or professional before you buy.