Simms Stream

{{short description|River in New Hampshire, United States}}

{{Use American English|date=February 2025}}

{{Infobox river

| name = Simms Stream

| name_native =

| name_native_lang =

| name_other =

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| image =

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| map =

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| pushpin_map = New Hampshire#USA

| pushpin_map_size = 250 px

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| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = New Hampshire

| subdivision_type3 = County

| subdivision_name3 = Coos

| subdivision_type4 = Town

| subdivision_name4 = Columbia

| subdivision_type5 =

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| length = {{convert|10.4|mi|km|abbr=on}}

| width_min =

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| source1 =

| source1_location = Columbia

| source1_coordinates= {{coord|44|48|52|N|71|22|40|W|type:river|display=inline}}

| source1_elevation = {{convert|2400|ft|m|abbr=on}}

| mouth = Connecticut River

| mouth_location = Columbia

| mouth_coordinates = {{coord|44|52|46|N|71|31|19|W|type:river|display=inline,title}}

| mouth_elevation = {{convert|990|ft|m|abbr=on}}

| progression =

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| tributaries_left = Moran Brook, Bog Brook, Uran Brook, West Branch

| tributaries_right = East Branch

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}}

Simms Stream is a {{convert|10.4|mi|km|adj=mid|-long}}[http://www.granit.unh.edu New Hampshire GRANIT state geographic information system] 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.