Otter Brook may refer to:
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Otter Brook, Nova Scotia, Canada, a community
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Otter Brook (Ashuelot River tributary)
Otter Brook is a river located in southwestern New Hampshire in the United States. It is a tributary of The Branch of the Ashuelot River, itself a tributary of the Connecticut River, which flows to Long Island Sound.
Otter Brook begins at Chandle ...
, New Hampshire, United States, a river
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