Availability of ground water in the middle Merrimack River basin, central and southern New Hampshire

This report provides a guide for ground-water exploration and for water- and land-use planning and management.  Sufficient amounts of water to supply single family homes are available from the bedrock aquifer nearly everywhere in the middle Merrimack River basin.  Relatively thin and narrow, unconsolidated aquifers of sand or sand and gravel commonly capable of yielding more than 200 gallons per minute (12.6 litres per second) to properly located and constructed wells are found only in major stream valleys.