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March 24, 2017

Everything We Know About Cornog Quarry | PA

Cliff Jumping Journals

By Jonathon Kelly

Cornog Quarry, in Wallace Township Chester County, is located in Southeastern Pennsylvania beside Marsh Creek. (Navigation in the Big Swings App )

Jump heights at …… 10, 20, 25 and 70 feet’

Water gets extremely cold


Fenced in by Philadelphia Suburban Water

Security guard

Marsh Creek Quarry just outside of Marsh Creek State Park

Mining, flooded

Aka “Keystone Trap Rock Quarry”

Originally owned and excavated by John Cornog in the mid 1800’s,

Why can’t you go there?

As outlined in the, Northern Struble Trail Feasibility Study Chester County, Pennsylvania On the Brandywine Creek DECEMBER 2015   

“the old Cornog Quarry, now owned by Philadelphia Suburban Water, is a default hydrologic feature which also may be used for water storage and must be protected from trespass by trail users.”  So, please stick to the rivers and the lakes that you’re used to.

In 2003 a story in the Daily Local News  wrote, “Activists win victory at Cornog

Philadelphia Suburban Water Co.’s plans for the Cornog Quarry were scrapped after five years of community opposition to the project.The company had planned to withdraw up to four million gallons of water per day from the East Branch of Brandywine Creek and store it in Wallace Township’s Cornog Quarry for distribution to current and future customers in East Brandywine and West Brandywine. The Brandywine Defense Coalition, which included East Brandywine and Wallace townships, the Brandywine Conservancy, the Delaware Riverkeeper Network, the Sierra Club and six private citizens, challenged the proposal because they said it would encourage rapid development and would possibly damage the creek, its wildlife and its recreational uses.

In April 2002,

the state Department of Environmental Protection and the New Jersey-based Delaware River Basin Commission approved PSW’s permits for the Cornog Quarry project. Five months later PSW received approval to construct a water treatment plant. As part of an out-of-court settlement, PSW requested the state Department of Environmental Protection suspend the permits that would have allowed them to construct a water treatment plant in Wallace. The settlement said PSW would purchase water from the Downingtown Municipal Authority from the Marsh Creek Reservoir several miles downstream. Opponents of the proposal held a victory celebration Sept. 20 at Kerr Park in Downingtown.PSW Chairman and CEO Nicholas DeBenedictis said it would only have taken water from the Brandywine when the stream was at high levels. He said there were a lot of misconceptions about how the plant would have operated.

Under the proposal PSW would have withdrawn up to four million gallons a day from the Cornog site. After the settlement, PSW donated almost 30 acres along the East Branch of the Brandywine Creek near the Ingram’s Mill Treatment Plant to East Bradford to preserve as open space.”

Stay within your skill level.  Always check for depth and debris. Remember to have a spotter, a qualified swimmer to look out for sunken dangers and debris that moves with the current.