News Releases

Seasonal drop in water levels designed to limit spring flood risk and dock damage

LAKE OZARK, Mo. (Dec.15, 2025) – With colder weather settling in, dock owners at Lake of the Ozarks and along the Osage River are encouraged to prepare now for the annual drop in water levels. The seasonal drawdown will lower water levels to about 654 feet above sea level to help manage spring flooding and reduce the risk of damage from ice and fluctuating water conditions.

“Each year’s winter drawdown is an important part of how we manage the Lake of the Ozarks,” said Brad Todd, director of hydro operations for Ameren Missouri. “By gradually lowering water levels and adjusting them throughout the season, we can help reduce spring flooding risks. However, because depths vary so much from cove to cove, winterizing docks is still one of the best ways for property owners to protect against ice and changing water levels.”

Dock owners can stay informed about current lake levels and river flows by visiting AmerenMissouri.com/Lake or by calling the Lake Level Daily Report at (573) 365-9205.

Ameren Missouri also encourages Lake of the Ozarks and lower Osage River dock owners to take the following steps as they prepare for the drawdown and winter weather:

• Below the dam, remove docks from the Osage River before freezing occurs.
• Ensure that hinges, pins and other hardware connecting docks to seawalls or piers can move freely with changing water levels.
• Loosen or extend dock cables so structures can safely lower as the lake or river level drops.
• Inspect dock electrical systems and lighting before winter, and have any issues corrected by a qualified electrician.
• Shut off power to the dock when it’s not in use for an extended period, if appropriate and safe to do so.
• Remove or securely store loose items such as furniture, ladders and water toys that could be damaged or become hazards in high winds or fluctuating water.
• Check dock cables, anchoring systems and flotation for signs of wear, corrosion or damage, and repair or replace as needed before harsher winter conditions.

Bagnell Dam is home to Ameren Missouri’s Osage Energy Center, which generates more than 500 million kilowatt-hours of clean energy for Missouri each year. To learn more about Bagnell Dam, visit Ameren.com/Lake.

About Ameren Missouri
Ameren Missouri has been providing electric and gas service for more than 100 years, and the company's electric rates are among the lowest in the nation. Ameren Missouri's mission is to power the quality of life for its approximately 1.3 million electric and 135,000 natural gas customers in central and eastern Missouri. The company's service area covers approximately 60 counties and more than 500 communities, including the greater St. Louis area. For more information, visit Ameren.com/Missouri or follow us at @AmerenMissouri or Facebook.com/AmerenMissouri.