Year 2002, measurements of water column depth at 15 minute intervals in the upper Parker River at Middle Road (Thurlow's Bridge), Byfield, MA.

Year 2002, 15 minute readings of water column depth in the upper Parker River at Middle Road (Thurlow's Bridge), Byfield, MA. Middle Road is located 18.5 km up the estuary from the 0 km reference at the mouth of Plum Island Sound. Water depths are relative to the sonde pressure transducer and are not associated with a datum.