Tenney Lock: (608) 221-7202 | Parks Office: (608) 224-3730
Experience the Dane County Tenney Lock and Spillway (Google map) – one of three boat locks located on the Yahara River. Tenney Lock is the largest lock and is located on Lake Mendota within the City of Madison. The lock is operated by a parks lock attendant during specific park hours, view schedule below.
A Tenney Lock Permit (daily or annual) is required for all watercraft using the lock and must be shown to the lock attendant (printed or displayed on your device). A permit fee for lock use offsets the cost of the attendant. Permits may be purchased online or at the electronic pay station at the Lock Pier (in the spring). There are no in-person cash sales so please plan ahead.
Public restrooms are available during the hours of lock operations, refer to the Tenney Lock Schedule below. If you need access through Tenney Lock off-hours, please contact Dane County Parks (Monday - Friday) at least 48 hours in advance. There will be a $50 minimum charge. Total charge will be determined by service requested.
Opening day is Thursday, April 28, 2022.
|Thursday||12:00 p.m. (noon)||7:00 p.m.|
|Friday||11:00 a.m.||9:00 p.m.|
|Saturday||10:00 a.m.||9:00 p.m.|
|Sunday||10:00 a.m.||8:00 p.m.|
|Extended Hours - Memorial Day Weekend|
|Friday, May 27||9:00 a.m.||11:00 p.m.|
|Saturday, May 28||9:00 a.m.||11:00 p.m.|
|Sunday. May 29||10:00 a.m.||10:00 p.m.|
|Monday, May 30 - Memorial Day||10:00 a.m.||8:00 p.m.|
|Thursday||12:00 p.m. (noon)||9:00 p.m.|
|Friday||9:00 a.m.||11:00 p.m.|
|Saturday||9:00 a.m.||11:00 p.m.|
|Sunday||9:00 a.m.||10:00 p.m.|
|FREE DAY - Saturday, June 18th|
|Extended Hours - 4th of July Weekend|
|Friday, July 1||9:00 a.m.||11:00 p.m.|
|Saturday, July 2||9:00 a.m.||12:00 a.m. (midnight)|
|Sunday, July 3||9:00 a.m.||11:00 p.m.|
|Monday, July 4 - 4th of July||9:00 a.m.||11:00 p.m.|
You cannot go through Tenney Lock or any of the county locks with a raised mast. Water levels determine the clearance height for a boat to move through the Lock. Generally, in normal water conditions 6 feet is the maximum height. During times of high water conditions, the maximum height will be less. Height is also an issue on the Yahara River (canal) moving between Mendota and Monona.
At least one bridge through this stretch has a maximum height of 6 feet. See Tenney Lock Fact Sheet (PDF) for additional information.
Tenney Lock permits will be available for purchase in the spring.