The dam also provided water to the Susquehanna Division of the Pennsylvania Canal System, which was constructed on the western bank of the river.

The Norfolk Southern Railway (formerly Conrail/Penn Central/Pennsylvania Railroad) passes through the borough between the Old Trail Road and the Susquehanna River.

Seasonal flooding occurs in the lowlands between the rail line and the river where the canal once passed.

The implementation of the GIS readdressing program required that several local communities rename streets so that there were no redundancies within the Selinsgrove ZIP code.

This prompted Shamokin Dam officials to appeal to the United States Postal Service for a unique ZIP code, which was awarded.

During the 17th century the region was dominated by the Haudenosaunee Iroquois Confederacy, which at that time included the Mohawks, the Onondagas, the Cayugas, the Senecas and the Oneidas.

Under the Confederacy the area was hunting grounds for the Delaware, Shawnee, Conoy, Monsey, Mohican and Nanticoke peoples.

A large population of Delaware Indians was forcibly resettled in the area in the early 18th century after they lost rights to their land in the Walking Purchase.

Canasatego of the Six Nations, enforcing the Walking Purchase of behalf of George Thomas, Deputy Governor of Pennsylvania, ordered the Delaware Indians to go to two places on the Susquehanna River, one of which was an area that included both present-day Sunbury, Pennsylvania and Shamokin Dam.

[7] In 1745, Presbyterian missionary David Brainerd described the city as being located on both the east and west sides of the river, and on an island, as well.

Brainerd reported that the city housed 300 Indians, half of which were Delawares and the other Seneca and Tutelo.

"[9] According to Weslager, "the Pennsylvania authorities had no opposition to the Six Nations reserving Wyoming and Shamokin from the sale, since friendly Delawares, including Teedyuskung (also known as Teedyuscung) and his people living in those settlements--and any other Indians who might be placed there--constituted a buffer against Connecticut.

In 1754, Chief Shikellamy negotiated with Conrad Weiser to set the Blue Mountains as the upper limit settlement in the native people's home lands.

The Six Nations Treaty of 1754 permitted settlements to move west of the Susquehanna River into lands that eventually became Snyder County.

Sunbury Generation Station is located along the Susquehanna River in Shamokin Dam, Pennsylvania.

In May 2005, the facility's emission allowances for both sulfur dioxide (SO2) and nitrogen oxides (NOX) were sold and a seasonal operation plan was announced.

The gross proceeds received by WPS for the 421.7 megawatt power plant were about $34.6 million, and were subject to certain working capital and other post-closing adjustments.

In 2006, Corona Power, LLC sought and won a substantial reduction in the tax assessment of the property.

Shamokin Dam Volunteer Fire Department, Company 90, the station house can be found at 3343 North Old Trail.