Sucker Brook is a short stream that drains into the northwest corner of Canandaigua Lake, New York, United States.

The brook has seen some pollution issues in recent years, as the channel at its mouth has been widened to increase recreational opportunities available in the area.

[2] Sucker Brook rises in a wooded area southeast of the intersection of Bliss and Wool House roads in the Town of Canandaigua, in the uplands 1.5 miles (3 km) west of the lake, 1,020 feet (310 m) above sea level.

After crossing under Hickox Road its banks become noticeably forested as it enters another large wooded wetland where it receives an unnamed tributary from the east.

It turns to the east, then bends southeast, paralleling the bases of some nearby hills to the south, and crosses under North Bloomfield a second time.

Then it flows almost straight southwest, closely paralleling the western boundary of the City of Canandaigua, recrossing Buffalo Street Extension in the process.

It turns southeast and straightens out as it crosses several streets, recrosses Routes 5 and 20 and then drains into Canandaigua Lake just west of the city pier.

[10] They are primarily bottom feeders, with the fry living off microcrustaceans, algae, and rotifers while the adults prefer larger crustaceans, insects, and snails.

[13] The interaction of the brook's outflow and the lake's counterclockwise shore currents has created Squaw Island a short distance offshore from its mouth, from deposited sediments.

Untreated waste from livestock washed into the creek's headwaters, giving Sucker Brook the highest fecal coliform counts of any of the lake's tributaries.