Hazard Warning: Hazard information may be user-submitted and unverified. Conditions change frequently. Always scout rapids and obstacles yourself.
Rapid WI Class I

115th Street Wave

Underwood Creek - *2025.07.11 WOOD ALERT* Krueger Park to Hoyt Park (0.5 - 3.5 miles) (WI)

Monitor this Rapid
Gauge Conditions
Underwood Creek at Wauwatosa, WI Downstream Primary
Runnable: 225.0 – 625.0 CFS

Too low. Boat and paddle abuse (scraping down a cement ditch and rocky rapids).

Data from American Whitewater & USGS
Photo
115th Street Wave
Photo courtesy of American Whitewater
Description

The 115th Street bridge consists of three cement box culverts. Trees often block one or more of these passages. It is highly recommended (while running shuttle) to carefully check for clear passage before putting in anyplace upstream.

As the cement ditch heads into these culverts at 115th Street, the cement bottom has some slope. At some flows, small surfable waves may form in one or more of the openings. If you have the time and presence of mind as you approach, pass, and possibly surf this spot, look up at the 'urban stalactites' forming on the cement underside of the bridge overhead (at the entrance and the exit from the culverts)!

Location
Type
Rapid
Difficulty
Class I
Mile Marker
1.2 mi
Directions
Navigate
View Full Run
*2025.07.11 WOOD ALERT* Krueger Park to Hoyt Park (0.5 - 3.5 miles)
Underwood Creek
II(III) 3.6 mi
Current Conditions
5-Day Forecast
Whitewater data from
American Whitewater