Hoyt Park; Drainage area: ~110 sq.mi.

Hoyt Park provides whitewater access to Underwood Creek, a medium-sized stream in the Wauwatosa area of Milwaukee County. This is a headwater stream located relatively close to its source, with a significant average gradient of 150.6 feet per mile and an elevation drop of 1,670 feet over its 11.09-mile length. The creek flows into a larger river system that eventually reaches the ocean, making it part of a significant drainage network despite its modest average flow of 4.2 cubic feet per second.

Paddlers should be aware that Underwood Creek exhibits whitewater characteristics with an average velocity of 0.99 feet per second and steep terrain. The stream's gradient and flow characteristics suggest Class II or higher rapids may be present, particularly in certain sections. This access point serves as an entry to the creek for kayakers and canoeists interested in whitewater paddling. Water levels and conditions can vary seasonally, so paddlers should check current conditions before launching.

The site is located in an urban setting within Milwaukee County, making it reasonably accessible. Paddlers should scout sections of the creek before committing to a run and be prepared for potentially challenging conditions typical of headwater streams with significant gradient.