Simms Stream
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Location
Country	United States
State	New Hampshire
County	Coos
Town	Columbia
Physical characteristics
Source
• location	Columbia
• coordinates	44°48′52″N 71°22′40″W / 44.81444°N 71.37778°W / 44.81444; -71.37778
• elevation	2,400 ft (730 m)
Mouth	Connecticut River
• location	Columbia
• coordinates	44°52′46″N 71°31′19″W / 44.87944°N 71.52194°W / 44.87944; -71.52194
• elevation	990 ft (300 m)
Length	10.4 mi (16.7 km)
Basin features
Tributaries
• left	Moran Brook, Bog Brook, Uran Brook, West Branch
• right	East Branch

Simms Stream is a 10.4-mile-long (16.7 km)^[1] river in northern New Hampshire in the United States. It is a tributary of the Connecticut River, which flows south to Long Island Sound, an arm of the Atlantic Ocean.

Simms Stream is located entirely in the town of Columbia, New Hampshire. It rises near Gadwah Notch in the eastern part of Columbia and flows northwest through logging and farming country to the Connecticut River near the border between Columbia and Colebrook.

• List of New Hampshire rivers