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Middle Branch Grass River
Location
Country	United States
State	New York
Physical characteristics
Source	Pleasant Lake Stream, Blue Mountain Stream
Mouth	Grass River
• location	Clare, New York
• coordinates	44°22′33″N 75°03′39″W / 44.37583°N 75.06083°W / 44.37583; -75.06083
• elevation	799 ft (244 m)
Basin size	63 sq mi (160 km2)
Basin features
Tributaries
• left	Tracy Brook
• right	Deerskin Creek, Mud Brook, Bear Creek, Alder Brook

The Middle Branch Grass River flows into the Grass River in Clare, New York. The Middle Branch Grass River and South Branch Grass River combine together here and become the Grass River.^[1]