Effects of Climate Change with Alex Singer. Enjoy nature in Tenney Park along Lake Mendota and the Yahara River Parkway bike path through the Madison Isthmus! Free, family-friendly walks at Tenney Park are held the first Saturday of each month, from 2:30-4pm and begin at the Tenney Beach parking lot, 1300 Sherman Avenue. Co-sponsored by Madison FUN Friends of Urban Nature, Madison Parks, Madison Audubon Society By clicking this link, you will be leaving the City of Madison website., Tenney-Lapham Neighborhood Association By clicking this link, you will be leaving the City of Madison website. and Friends of the Yahara River Parkway By clicking this link, you will be leaving the City of Madison website..