Westminster. Worcester Uplands. New Hampshire’s Mt Monadnock (in the left distance) at 3000 feet attests to the higher elevations in this part of the state. Nearby Mt Wachusett is 2000 feet. These remnants of worn down mountains, through millions of years of erosion, indicate the land was formerly much higher. The rivers flow in relatively deeper and narrower valleys than on the Coastal Plains and Hills region and the water power consequently is greater and the mills could be larger and more productive.