[15] The municipal Freeport Sewer District operates a secondary wastewater treatment plant licensed to discharge an average of 750,000 gallons daily into the Harraseeket River via an outfall pipe.

[16] Multiple marinas and boatyards operate in the Harraseeket with sailboats and power boats moored in an extensive anchorage in the lower reaches of the estuary.

[21] The earliest colonial settlements along the Harraseeket were linked to farming or harvesting pine trees for ship masts for the Royal Navy, with those logging efforts centered initially on the Piscataqua River.

[22] During the 17th and early 18th century, a number of Maine farmers turned to shipbuilding as a way to capitalize on surplus timber they cleared to grow crops, typically forming syndicates to share ownership and any profits from cargoes.

While some vessels were built on farm properties and then launched there or hauled overland to waterways, small shipyards began opening along rivers and harbors that attracted and then groomed over succeeding generations a homegrown industry of shipwrights, tradesmen and laborers under the direction of "master builders".