 Reitzloff says Lake Kashkhanan has known populations of curly leaf pondweed and zebra mussels. And downtown Beloit's riverfront could soon have two kayak rental kiosks. The city is asking the city council's blessing Monday to let local vendors Surf's Up open two kayak rental stands along the Rock River downtown. Downtown Beloit Association Director Shawna El-Amin says kayaking is growing in popularity on the Rock River. She says Surf's Up would help make the sport accessible to people who don't own their own kayak.