Due to heavy runoff the level of Lake Zumbro is currently above normal summer pool elevation. This condition will persist until river flows in the South and Middle Forks of the Zumbro River fall to less than the hydraulic capacity of the Zumbro Hydroelectric Plant (approximately 800 cubic feet per second). Lake Zumbro will be maintained at normal summer pool (914.5 MSL) throughout the rest of the spring and summer season, to the extent possible. However, the public should be aware that the Zumbro Hydroelectric Plant has extremely limited capacity to pass flood flow, resulting in occasional high water events that exceed normal pool.

Real-time lake level information is available on the RPU web site (www.rpu.org). For additional information regarding the Zumbro Dam and Hydroelectric Facility please contact Tony Benson 280-1534 or Todd Osweiler, 280-1589.

Tips for safe boating:

Watch the weather. Be aware of changing water levels and conditions that would expose logs, snags or cause floating debris. Be cautious when boating in the vicinity of the dam. Do not proceed past the warning signs and buoys. Tell someone where you are going, who is with you, and how long you will be away. Avoid standing, and when changing seats, stay low and near the centerline of your boat. Be ready for trouble when a powerboat passes you in a narrow channel. Maintain a safe operating speed. Always wear approved personal flotation devices (PFD).

About Rochester Public Utilities

As the municipal utility of Rochester, Minn., for more than 110 years, RPU provides high-quality and reliable electricity to over 47,000 customers.  Water customers number more than 36,000.  RPU continually investigates innovative technologies to help customers realize the best value from the services they receive.  Current initiatives include fuel cell research, wind power, and photovoltaic offerings.

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The annual drawdown of Lake Zumbro is scheduled to begin on October 26^th. The drawdown is necessary for planned maintenance and shoreline restoration work.  The public should be aware that the drawdown planned for this fall will be substantially greater than normal.  A typical fall drawdown is less than two feet; whereas this year a four foot drawdown will be attempted.  These plans are subject to change depending on rainfall and resulting runoff.  RPU’s drawdown plan is as follows:

·          Saturday, October 26^th start the gradual drawdown from summer pool elevation 914.5 and continuing releasing water until a target elevation of 910.5 is achieved.  If the weather cooperates, the target elevation could be reached by Monday, November 4^th. 

·          Maintain the lake level at or about 910.5 from November 4^th thru Sunday, November 10^th.

·          On Monday, November 11^th the lake refilling will begin.  The level would be slowly raised back up to normal winter pool at a rate no more than 0.5 feet per day while maintaining a minimum release of 70 cfs.  We anticipate a minimum of 8 days will be required to raise the lake level to normal winter pool of 93.0 to minimize the impact on downstream resources.

The drawdown plan is subject to change depending on weather conditions.

During the months of November through March, Rochester Public Utilities (RPU) will attempt to maintain the lake level within the winter pool range.

Real-time lake level information, along with Lake Zumbro hydro updates are available on the RPU web site (www.rpu.org). For additional information regarding the Zumbro Hydroelectric Facility please contact Tony Benson at (507) 280-1534.

Tips for lake ice safety:

Be extremely careful during winter activities that involve Lake Zumbro such as ice fishing, snowmobiling or just walking out on the frozen lake.

Watch the weather and river flow conditions.

Ice thickness and condition can vary greatly. Be very cautious.

Look out for ice heaves and exposed logs and snags.

Be cautious in the vicinity of the dam. De-icing equipment has been installed along the upstream face of the dam resulting in open water and/or thin ice.

Do not proceed past the warning signs and buoys.

About Rochester Public Utilities

As the municipal utility of Rochester, Minn., for more than 110 years, RPU provides high-quality and reliable electricity to over 47,000 customers.  Water customers number more than 36,000.  RPU continually investigates innovative technologies to help customers realize the best value from the services they receive.  Current initiatives include fuel cell research, wind power, and photovoltaic offerings.

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Due to heavy runoff the level of Lake Zumbro is currently above normal summer pool elevation. This condition will persist until river flows in the South and Middle Forks of the Zumbro River fall to less than the hydraulic capacity of the Zumbro Hydroelectric Plant (approximately 800 cubic feet per second). Lake Zumbro will be maintained at normal summer pool (919.8 dam datum) throughout the rest of the spring and summer season, to the extent possible. However, the public should be aware that the Zumbro Hydroelectric Plant has extremely limited capacity to pass flood flow, resulting in occasional high water events that exceed normal pool.

Real-time lake level information is available on the RPU web site (www.rpu.org). For additional information regarding the Zumbro Dam and Hydroelectric Facility please contact Tony Benson 280-1534 or Todd Osweiler 280-1589.

Tips for safe boating:

Watch the weather. Be aware of changing water levels and conditions that would expose logs, snags or cause floating debris. Be cautious when boating in the vicinity of the dam. Do not proceed past the warning signs and buoys. Tell someone where you are going, who is with you, and how long you will be away. Avoid standing, and when changing seats, stay low and near the centerline of your boat. Be ready for trouble when a powerboat passes you in a narrow channel. Maintain a safe operating speed. Always wear approved personal flotation devices (PFD).

About Rochester Public Utilities

As the municipal utility of Rochester, Minn., for more than 110 years, RPU provides high-quality and reliable electricity to over 47,000 customers.  Water customers number more than 36,000.  RPU continually investigates innovative technologies to help customers realize the best value from the services they receive.  Current initiatives include fuel cell research, wind power, and photovoltaic offerings.

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The level of Lake Zumbro is scheduled to be lowered from normal summer pool (Elevation 919.7 dam datum) to the winter pool beginning on or about October 29.

The drawdown to winter pool normally takes approximately a week to complete, however it may take longer if unexpected weather conditions arise.

During the months of November through March, Rochester Public Utilities (RPU) will attempt to maintain the lake level within the winter pool range of 918.0 – 918.5, which is about 1.5 to 2 feet below the crest of the dam.

Real-time lake level information, along with Lake Zumbro hydro updates are available on the RPU web site (www.rpu.org). For additional information regarding the Zumbro Hydroelectric Facility please contact Tony Benson at (507) 280-1534.

Tips for lake ice safety:

Be extremely careful during winter activities that involve Lake Zumbro such as ice fishing, snowmobiling or just walking out on the frozen lake.

Watch the weather and river flow conditions.

Ice thickness and condition can vary greatly. Be very cautious.

Look out for ice heaves and exposed logs and snags.

Be cautious in the vicinity of the dam. De-icing equipment has been installed along the upstream face of the dam resulting in open water and/or thin ice.

Do not proceed past the warning signs and buoys.

About Rochester Public Utilities

As the municipal utility of Rochester, Minn., for more than 110 years, RPU provides high-quality and reliable electricity to over 47,000 customers.  Water customers number more than 36,000.  RPU continually investigates innovative technologies to help customers realize the best value from the services they receive.  Current initiatives include fuel cell research, wind power, and photovoltaic offerings.

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Due to the recent warm weather Lake Zumbro will be raised from winter pool (elevation 918.5 dam datum) to the normal summer pool (elevation 919.7 dam datum) with a target date of April 1st.  The lake level will slowly be raised over this time period until the normal summer pool is reached, but could be sooner than the target date if there is a significant rain event.

Real-time lake level information is available on the RPU web site (www.rpu.org) For additional information regarding the Zumbro Dam and Hydroelectric Facility please contact Tony Benson 280-1534 or Todd Osweiler, 280-1589.

Tips for safe boating:

Watch the weather. Be aware of changing water levels and conditions that would expose logs, snags or cause floating debris. Be cautious when boating in the vicinity of the dam. Do not proceed past the warning signs and buoys. Tell someone where you are going, who is with you, and how long you will be away. Avoid standing, and when changing seats, stay low and near the centerline of your boat. Be ready for trouble when a powerboat passes you in a narrow channel. Maintain a safe operating speed. Always wear approved personal flotation devices (PFD).

About Rochester Public Utilities

As the municipal utility of Rochester, Minn., for more than 110 years, RPU provides high-quality and reliable electricity to over 47,000 customers.  Water customers number more than 36,000.  RPU continually investigates innovative technologies to help customers realize the best value from the services they receive.  Current initiatives include fuel cell research, wind power, and photovoltaic offerings.

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