June 15, 2018
Jon thinks this was the River course.
The River Course at Blackwolf Run is a Pete Dye design in Kohler, Wisconsin, routed along the Sheboygan River through a glacier-carved valley. Nine of its holes were part of the composite course for the 1998 and 2012 U.S. Women's Opens. The Perry Bros played it on June 15, 2018.

Blackwolf Run opened in 1988 as a single 18, designed by Pete Dye with Herb Kohler. When a second 18 was added, the original holes were split between the River and Meadow Valleys courses.
Se Ri Pak won the 1998 U.S. Women's Open here in a playoff that went to sudden death, and Na Yeon Choi won in 2012. Both were played on a composite of River holes 1 to 4 and 14 to 18 with the Meadow Valleys back nine.
We played Blackwolf Run the day before Whistling Straits in June 2018. Jon thinks it was the River course.
On a composite course: River holes 1 to 4 and 14 to 18 plus the back nine of Meadow Valleys.
Pete Dye, with Herb Kohler. It opened in 1988.
Yes. It is a resort course at Destination Kohler, and carts are allowed.
Sources: Destination Kohler: the River · Destination Kohler: Blackwolf Run