Joppatowne High School

The Gunpowder River is a 6.8-mile-long (10.9 km) tidal inlet on the western side of Chesapeake Bay in Maryland, United States. It is formed by the joining of two freshwater rivers, Gunpowder Falls (often referred to locally as "Big Gunpowder Falls") and Little Gunpowder Falls.

Joppa ( JOP-ə) is a former colonial town and current planning region of Harford County, Maryland, United States. Joppa was founded as a British settlement on the Gunpowder River in 1707 and designated as the third county seat of Baltimore County in 1712. The original boundaries of Baltimore County were defined in 1659 and contained all of modern day Baltimore County, Baltimore City, Harford and Cecil counties and parts of Howard, Carroll, Anne Arundel and Kent counties. The settlement was named for the Biblical town of Jaffa in the ancient Holy Land of modern-day Israel. Joppa's harbor began to silt in due to clearcutting and farming upriver and coupled with multiple outbreaks of diseases such as smallpox and malaria, the county seat was moved to the growing, deep water port of Baltimore in 1768. Joppa's population would decline rapidly thereafter and businesses left for more prosperous environments in the new Baltimore Town.

Trinity Lutheran Christian School & Early Learning Center (TLCS) is a private K-8 Christian school in the Joppa community and in the Edgewood census-designated place in Harford County, Maryland.Trinity serves families with children ages 6 weeks to 8th Grade.

The Bird River is a tidal river in eastern Baltimore County in the U.S. state of Maryland. The Bird River empties into the Gunpowder River.

Bradshaw is an unincorporated community in Baltimore County, Maryland, United States, located southeast of Kingsville.

Clayton is an unincorporated community in Harford County, Maryland, United States. Clayton is located on Maryland Route 152, 4 miles (6.4 km) northwest of Edgewood.

On January 4, 1987, two trains collided on Amtrak's Northeast Corridor main line near Chase, Maryland, United States, at Gunpow Interlocking. Amtrak train 94, the Colonial, (now part of the Northeast Regional) traveling north from Washington, D.C., to Boston, crashed at over 100 miles per hour (160 km/h) into a set of Conrail locomotives running light (without freight cars) which had fouled the mainline. Fourteen passengers on the Amtrak train died, as well as the Amtrak engineer and lounge car attendant.The Conrail locomotive crew failed to stop at the signals before Gunpow Interlocking, and it was determined that the accident would have been avoided had they done so. Additionally, they tested positive for cannabis. The engineer served four years in a Maryland prison for his role in the crash. In the aftermath, drug and alcohol procedures for train crews were overhauled by the Federal Railroad Administration (FRA), which is charged with rail safety. In 1991, prompted in large part by this crash, the United States Congress took even broader action and authorized mandatory random drug-testing for all employees in "safety-sensitive" jobs in all industries regulated by the U.S. Department of Transportation (DOT) including trucking, bus carriers and rail systems. Additionally, all trains operating on the high-speed Northeast Corridor are now equipped with automatic cab signalling with an automatic train stop feature. Several safety issues were identified with Amfleet cars as well.At the time, the wreck was the deadliest in Amtrak's history. It was surpassed in 1993 by the Big Bayou Canot rail accident in Alabama where 47 died and another 103 were injured.

The Joppa Iron Works, also known as Patterson's Iron Works was founded around 1817 by Joseph and Edward Patterson of Baltimore, the brothers of Elizabeth Patterson Bonaparte, the sister-in-law of Napoleon I of France. Built at the falls-line of the (Dividing line of the Coastal Plain, the Piedmont Plateau) Big Gunpowder River in eastern Baltimore County, Maryland, the plant was started as a slitting and nail-making company. Located about 0.75 mile below current-day Maryland Route 7, it eventually had six puddling furnaces, one heating furnace, and 37 water-powered nail machines. The Joppa Iron Works were on the Great Gunpowder not quite a mile from its embouchure and near Divers Island. They were operated up to the commencement of the civil war and their product was well known in all the markets. They consisted of a large rolling mill nail works and forges. First-class vessels came up the river to the island and the embankments for the wharves are still visible. Where the main channel of the Gunpowder once was and where sea going ships rode at anchor is now a corn field on the Mount Peru estate. One rolling mill an immense stone structure abandoned more than twenty years ago still stands and is almost covered by the rank luxuriance of the Virginia creeper. The works were owned and operated by that Patterson family of which Madame Elizabeth Patterson Bonaparte was a member, who sold the whole tract of one hundred and thirty four acres known as Bald Hill to the city of Baltimore for water privileges for twenty thousand dollars. The city resold it and it is now the property of Levi Furstenburg. The Joppa Iron Works closed around 1865 with the death of Edward Patterson. The Loreley Distilling Company eventually purchased the property and distilled whiskey on the site, closing when Prohibition took effect; selling the property to the Frank L. Wight Distilling Co. in 1933. Frank Wight sold the company to Hiram Walker & Sons of Canada in 1941. The site was subsequently shut down in 1948 when production moved to their Peoria, Illinois, facility. Few remnants of the iron works that remain; a mill race and some stone foundations are still visible. Iron bolts and an old ship's mooring ring are still visible in various boulders. Remnants of slag from the furnaces can still be found in the area. In 1970, the property was acquired by the Department of Forest & Parks Maryland and is now part of the Gunpowder State Park.

Joppatowne is a census-designated place in southwestern Harford County, Maryland, United States. Serving as a bedroom community for nearby Baltimore, it was established in 1961 as a planned unit development (PUD). The population was 12,616 at the 2010 census, up from 11,391 in 2000. Joppatowne is covered by the "Joppa" ZIP Code of 21085, and "Joppa" is a designated planning region for Harford County. The Joppa ZIP code (21085) extends 6 miles (10 km) north of Joppatowne, as far as Benson, just south of Bel Air. The namesake of both Joppatowne and Joppa is the original town of "Joppa" (Jaffa, Israel). It was a major seaport in American colonial times and the county seat of the original Baltimore County until 1768. Its site is located within the boundaries of present-day Joppatowne.

Gunpowder Meetinghouse is a historic Methodist church located at Aberdeen Proving Ground, Harford County, Maryland. It is a one-room brick structure that may date to 1773.It was listed on the National Register of Historic Places in 1974.

Franklinville is an unincorporated community in Baltimore County, Maryland, United States. southeast of Kingsville.

The Bevard House, also known as Hooper House, is a historic log home located in Kingsville, in Baltimore County, Maryland. The house was constructed in the 1850s and purchased in 1854 by John Bevard who lived there with his family until 1893. At the time of its designation, the majority of its construction was still intact.It is documented in the Maryland Inventory of Historic Properties.