It’s a sure sign of spring: water taxis are back on the Chicago River.

The distinctive yellow boats made their seasonal debut Monday at four stops Downtown. Stops along the north and south branches of the river will open later this spring, Andrew Sargis, chief of operations for Chicago Water Taxi, says.

One-way tickets cost $5, while all-day passes are $9. Ten-ride ($20) and 31-day ($60) passes are also available on the water taxi website.

For now the boats are stopping at the Wrigley Building, the north bank of the river at LaSalle Street, the south bank of the river at Clark Street and the northwest corner of the Madison Street Bridge.

The full route includes stops at Ping Tom Memorial Park in Chinatown, Chicago Avenue at the river, and where North and Sheffield avenues intersect near the northern tip of Goose Island.