Quinapoxet River
 The Quinapoxet River is part of the Nashua River watershed in northern Massachusetts in the United States. It is part of the Massachusetts Water Resources Authority water system supplying drinking water to the greater Boston area.The uppermost tributaries of the Quinapoxet River rise in the town of Princeton Massachusetts the watershed generally known as the Upper Worcester Plateau or the Monadnock Upland. This watershed tops at Wachusett Mountain the highest feature in the area.