Lake Hopatcong is the largest freshwater body in New Jersey, United States, about in area. Located from the Delaware River and from Manhattan, New York City, the lake forms part of the border between Sussex and Morris counties in the state's northern highlands region.

Lake Hopatcong was produced by damming and flooding of two ponds, known as the Great Pond and Little Pond, and the Musconetcong River, its natural outlet. Historically known as a resort lake for vacationing New Yorkers, it is now a mostly

suburban residential lake.

Name

The exact origin of the name Hopatcong is unknown, though it is most commonly attributed to the Lenape Indian word for "stone water," or "stone over water". Some linguists believe "Hopatcong" to be a derivative of the Lenape word hapakonoesson, meaning "pipe stone". One explanation of the origin of the word Hopatcong is that it was a derivation from the Lenni Lenape word Huppakong meaning "honey waters of many coves," but this wording was probably invented at the beginning of the 20th century to stimulate tourism.

Before the late 1700s, Lake Hopatcong was known by several names, including Great Pond and Little Pond (before flooding into a single lake), Sandhay Sea (circa 1648), Brookland Pond (mid-1700s), and Musconetcong Pond (1769).

Lake formation

Before the last ice age, the waters of the prehistoric Hopatcong basin fed into the Raritan River. The glacier that shaped much of the New Jersey Highlands formed a long terminal moraine that forced water from the basin into the Musconetcong River. The glacier left behind two ponds, nearly apart.

In the early 1700s, the Great Pond stretched between Henderson Bay and today's Hopatcong State Park. Little Pond was a small body of water to the south of Woodport. The two lakes were first dammed in 1750. By 1831, Lake Hopatcong had been flooded to nearly its current shape.

Resort destination

thumb|right| The Isles Bridge, circa 1911

In 1882, passenger rail service came to Lake Hopatcong, brought by the Central Railroad of New Jersey, which terminated at Nolan's Point. During the peak summer season, the lake was so popular that hotel rooms were difficult to come by and some visitors resorted to camping near the lake.

Various amusements sprang up around the lake. Bertrand Island Amusement Park was open for the late spring, summer, and early fall seasons. The island also hosted beauty pageants, including an unofficial 1934 Miss America. The Lake Hopatcong Yacht Club, constructed in 1910 on Bertrand Island, remains a landmark.

Lake Hopatcong hosted several strong chess tournaments in the 1920s, including the Ninth American Chess Congress in 1923, which was won by Frank Marshall and Abraham Kupchik, and another tournament in 1926, which was won by world champion José Raúl Capablanca.

Lake Hopatcong flourished in the 1920s, and many famous people owned property on the lake, including Vaudeville's Joe Cook, who owned Sleepless Hollow in Davis Cove; Vaudeville's Owen McGiveney (father to Maura McGiveney), who owned a house in the River Styx section for more than 30 years; actress Lotta Crabtree, who owned the Attol Tryst home in Mount Arlington; and inventor and chemist Hudson Maxim. Their presence attracted many famous visitors, including Babe Ruth, Bud Abbott, Bert Lahr,Lou Costello, and Milton Berle.

Lake Hopatcong sustained flooding damage, particularly the Great Cove area at Nolan's Point.

2008-09 drawdown

Every five years, starting the day after Labor Day, the New Jersey Department of Environmental Protection’s (DEP) water-level management plan allows the lake to be lowered to inspect the dam structure, repair lakeshore structures, control aquatic vegetation, and remove silt and drainage material from areas around the lake.

From December 2008 to January 2009, the DEP left the dam open almost three weeks too long, which caused the water to drop almost a foot (0.3 m) below the normal drawdown level. A group of residents and business owners, led by Ray Fernandez of Bridge Marina, Inc., sued the DEP and the State of New Jersey, claiming that the DEP, against policy, released an extra . As of 2009 the case was being appealed in local court.

On May 11, 2009, the American Power Boat Association (APBA) and the Lake Hopatcong Racing Association (LHRA) postponed their annual races due to the low water level. However, with the large amount of rainfall that June, the lake returned to its proper level above the normal average depth.

In July 2014, there were reports of a boa constrictor in the lake, but officials by August mostly figured it was a myth or a hoax. According to one report, the reports caused a 10% drop in tourism to the lake during the summer of 2014. Most of the shoreline is privately owned by individual lakefront residents, homeowner or community associations, or private businesses (e.g., restaurants and marinas).

Unlike most lakes in New Jersey (other than Greenwood Lake on the New York border and Lake Lackawanna in Byram), Lake Hopatcong has bars and restaurants that are accessible directly by boat. Popular tourist attractions on the lake include the Hopatcong State Park, the Lake Hopatcong Historical Museum, and the Lake Hopatcong Yacht Club.

thumb|right|Sandcastle at Lake Hopatcong.

On November 22, 2005, the EPA gave the Lake Hopatcong Commission a federal grant of $745,000 to improve the water quality and prevent phosphorus from entering the lake.

Lake management

Lake Hopatcong is shared by two counties (Sussex and Morris) and four boroughs and townships (Mount Arlington, Hopatcong, Jefferson Township, and Roxbury Township).

At some point in the 20th century, decisions about lake management were shaped by the state-funded Lake Hopatcong Regional Planning Board, which made recommendations to the state. Made up of representatives from each town, county, and the state, the board proved ineffective. Weeds proliferated, water quality declined, and recreation suffered.

In January 2001, Governor of New Jersey Christie Whitman signed a bill to create the Lake Hopatcong Commission, a state-funded governing body with an annual budget to maintain, upgrade and protect the lake. The commission consists of 11 members: one representative apiece from Morris County, Sussex County, Hopatcong, Jefferson Township, Mount Arlington, and Roxbury Township; and five state members, including one from the Department of Environmental Protection and one from Community Affairs. The chairperson of the commission and two other public members are appointed by the governor. In 2012, the state took over the weed-harvesting services through Hopatcong State Park. The Lake Hopatcong Commission was not provided state funding for 2013 and now operates solely on grants. The commission administrator was laid off on December 21, 2012, and administrative responsibilities for grants are managed by Jefferson Township.

Water quality in Lake Hopatcong is monitored between May and October by environmental scientists to assess the lake’s ecological health and to guide restoration efforts under the watershed implementation plan.

Wildlife

thumb|right|Beach at Lake Hopatcong State Park.

thumb|right|View of the lake from the picnic area at the state park.

thumb|right|Wildflowers growing near the lake.

With the probable exception of the Delaware River, Lake Hopatcong is home to the greatest variety of gamefish species of any waterway in New Jersey.

Each spring, the New Jersey Division of Fish and Wildlife stocks the lake with rainbow trout, and in past years also stocked brook and brown trout, although they have not typically held over and survived the summers, due to an absence of cold, deep, oxygenated pockets of water in the lake. Largemouth bass, smallmouth bass, sunfish, yellow and white perch, rock bass, bluegill, crappie, chain pickerel, channel catfish, bullhead, and carp all inhabit the lake. Eels also have been caught. Hybrid striped bass, walleye, and most recently, muskellunge have been stocked within the last few decades and now are thriving. Catfish also are stocked from time to time. The main forage is the abundant alewife herring, (Clupea vernalis), the basis of the lake's fish food chain.

References

  • Lake Hopatcong State Park
  • Lake Hopatcong Historical Museum
  • Hopatcong Website
  • Landing, NJ on Lake Hopatcong
  • Lake Hopatcong Foundation