Delaware Water Gap

Delaware Water Gap is a water gap on the border of the U.S. states of New Jersey and Pennsylvania where the Delaware River cuts through a large ridge of the Appalachian Mountains.^[2]

The gap makes up the southern portion of the Delaware Water Gap National Recreation Area, which is used primarily for recreational purposes, such as canoeing, fishing, hiking, and rock climbing. Though the US National Park Service manages the National Recreation Area, portions of the water gap are also patrolled by New Jersey Division of Parks and Forestry.

The park does not charge an entrance fee but does have expanded amenity fees, including vehicle season and daily passes, bicycles amenity fees, and charges for beach use. Most of the park is open 24-hours a day, with most day-use areas within the park open sunrise to sunset (such as trailhead parking lots, Millbrook Village, and all picnic areas).^[3]

Geology

A water gap is a geological feature where a river cuts through a mountain ridge. The Delaware Water Gap formed 500

About 400 million years ago, a small continent collided with proto-North America. The heat from the pressure melted the quartzite, which allowed it to bend the quartz pebbles. This layer was then uplifted and cracked over thousands of years. During this period, the Delaware River slowly cut its path down through the shattered and cracked quartzite. If the quartzite had not been cracked, the river would not have been able to cut its path through the mountain to form the gap.^[5]

Millions of years of rain, ice, snow, and wind erosion shaped the area. The Wisconsin glaciation, which occurred between 21,000 BCE and 13,000 BCE, covered the entire Kittatinny Ridge and ended near Belvidere. When the glaciers retreated, the existing gap assumed its present form.^[6]

The mountain is comprised of Silurian shawangunk conglomerate. This is gray quartzite, which makes the mountain highly resistant to weathering. The Silurian High Fall formation of sandstone is on the western side of the gap near the base. The eastern side of the gap has Ordovician Martinsburg shale. Sedimentary rock is along the river. The Bloomsburg Red Beds, a red shale, are at the gap under Dunnfield Creek.

The Delaware Water Gap is nearly 1,300 feet (400 m) wide at river level and about 1 mile (1.6 km) wide from the top of Mt. Tammany to the top of Mt. Minsi. It is more than 1,200 feet (370 m) from mountaintop to the river surface.^[7] The river through the gap is 290 feet (88 m) above sea level.

The ridge of the

In 1739, America's first botanist, John Bartram of Philadelphia, followed the course of the Delaware River in his search for American trees, evergreens and shrubs to supply new species that were formerly unknown to British naturalists. These gardeners waited months for shipments of saplings, seeds, and pinecones to be sent by sea that were then introduced into English gardens. Using Native American trails, Bartram rode on horseback through the Water Gap, which allowed entry to the lands beyond.^[8]

A northern deciduous forest cloaks the slopes of the Delaware Water Gap. Hardwood species comprising the forest include various

Steep rock walls prohibited foot travel through the gap until a road was built on the Pennsylvania side of the river in 1793. In 1830, a road was built on the New Jersey side through the gap and north toward Pahaquarry. Interstate 80 passes through the gap on the New Jersey side as of the early 1970s via the Delaware Water Gap Toll Bridge, and occupies the former right-of-way of the New York, Susquehanna and Western Railway.

The Pennsylvania portion of the

Tocks Island and the National Park Service

In 1962, the Congress authorized the building of a dam across the Delaware River at Tocks Island, upstream of the water gap. Meant to control hurricane-related flooding, it was never built. The land for the proposed reservoir, which had already been purchased, was used to create the Delaware Water Gap National Recreation Area in 1965.^[11]

There are two visitor centers, one in New Jersey near the Delaware River bridge and the other in Dingman's Ferry, Pennsylvania. Headquarters is located on River Road in Pennsylvania. The New Jersey side of the gap is also protected within Worthington State Forest, a forest wholly contained within the recreation area.

Hiking trails

Mount Tammany Trail

One of two trails leading up 1,200 vertical feet to the summit of Mt. Tammany. Once completed, one can see views of Mt. Minsi in Pennsylvania on the other side of the gap.^[12]

Pahaquarry Trail

The second trail to the top of Mt. Tammany. The most challenging hike in the park is to combine the Red Dot and Blue Blaze trails into a 3 mi (4.8 km) loop. Park Services suggest ascending the Red Dot and descending the Blue Blaze, and the Blue trail is less steep.^[13]

Dunnfield Creek Trail

Dunnfield Creek Trail departs from the Appalachian Trail above the Delaware River, follows the creek for two-thirds of its length with numerous stream crossings. The trail then climbs a ravine to rejoin the Appalachian Trail at Sunfish Pond.^[14][15][16]

Appalachian Trail

Running from Springer Mountain, Georgia to Mt. Katahdin in Baxter State Park, Maine, the Appalachian Trail enters the Delaware Water Gap at the Delaware River on the Route 80 Bridge. It goes to Sunfish Pond, and continues northeast to Stokes State Forest. The trail crosses Route 206 and continues along the ridgeline of the Kittatinny Mountains to High Point State Park, eventually entering New York. Of the 2,174 miles (3,499 km) of trail, 28 miles (45 km) are within the Delaware Water Gap National Recreation Area.^[17]

Additional trails also traverse through the area.

Rock climbing

The gap is a popular place to rock-climb in New Jersey. The climbs are 150 to 300 ft (46 to 91 m). Most climbing is done on the New Jersey side due to easier access. There are about one hundred climbs on the New Jersey side. Climbs range from 5.1 to 5.14 on the

Beginning in 2010, the Pennsylvania side has been periodically closed to climbing during the nesting season for the

Pahaquarra Boy Scout Camp was located on the New Jersey side of the Delaware Water Gap on Old Mine Road at the abandoned Pahaquarry Copper Mine. The camp served Boy Scouts from the George Washington Council. Just north of this camp was Camp Cowaw Boy Scout Camp which served Raritan Council Boy Scouts.

See also

• Mount Tammany Fire Road
• Delaware Water Gap National Recreation Area

References

External links

Wikimedia Commons has media related to Delaware Water Gap.

• Camp Cowaw Archived 2016-01-11 at the Wayback Machine
• Pahaquarry Abandoned Mine at Delaware Water Gap
• "Delaware Water Gap" .
  New International Encyclopedia
  . 1905.