Hopewell Township in Mercer County, New Jersey — The American Northeast (Mid-Atlantic)
Parks for the People
| | Lawrence Hopewell Trail | |
The County of Mercer boasts close to a dozen parks and other recreational facilities, all geared to support the health and well-being of residents and visitors. The Lawrence Hopewell Trail wends its way through Mercer Meadows which, at more than 1,600 acres, is one of the larger tracts of County-owned land set aside for the pleasure of the public.
Mercer Meadows is a combination of Rosedale Park, where you are now, and the former AT&T Pole Farm and other surrounding open space subsequently acquired by the County. Mercer Meadows is devoted chiefly to passive recreation and offers a fascinating blend of nature and history along with opportunities for hiking, biking, horseback riding, bird watching, fishing and boating.
Rosedale Park has its origins almost a century ago in a recommendation of the Mercer County Planning Commission in 1931 that the County create a park commission and develop its own park system. Stony Brook was one of five stream corridors suggested for park development and, as a first step toward realizing the Countys goal, Pennington Borough in 1933-35 took on the task of rebuilding the dam at Pennington Mill and restoring the millpond about a half mile upstream of here. This initial project was undertaken by local workers employed through the Federal Emergency Relief Administration.
Stony Brook Park, as Rosedale Park was first known, gradually took shape between the 1930s and the late 1960s as the County acquired properties piecemeal, stitching together the recreational preserve that we know today. Forty-acre Rosedale Lake in front of you was constructed in 1969-70 on the former Johnson farm, acquired by the County a year earlier through eminent domain. The smaller water body within the park the six-acre Willow Pond that hides across the lake and beyond the trees was created around 1960 as a water conservation project and for fishing, while that land parcel was still in private hands. The more distant section of the park was acquired by the County from the Blackwell family in 1968, along with the historic Hunt House where the Mercer County Park Commission is now headquartered.
The land now covered by Rosedale Park was once rich and productive farmland. First cleared and settled early in the 18th century, this gently rolling terrain alongside Stony Brook was long associated with the Blackwells, one of Hopewell's pioneer families. The first of the family to reside in this area was Robert Blackwell, Jr., who moved here from Newtown, Long Island circa 1700-1710. More recently, from 1929 until the creation of the park, the Johnson family farmed most of this land. Their home, formerly a Blackwell farmhouse, stood near the spot where the playground is today.
(image captions)
This aerial photograph from 1930 shows how Rosedale Park and Mercer Meadows were created by the County of Mercer from a broad swath of agricultural land in Lawrence and Hopewell townships (https://njwebmap.state.nj.us).
The Blackwell/Johnson farmhouse during the winter of 1963-64 (Theodore R. Johnson, Titusville).
Horseback riders canter across the bed of partially created Rosedale Lake in September of 1969 (Mercer County Park Commission).
Mercer County officials gather for the Stony Brook Park groundbreaking in 1969 on the porch of the soon-to-be-demolished Blackwell/Johnson farmhouse (Mercer County Park Commission).
Background images: Avid anglers sit on the dam in the foreground and line the banks of Rosedale Lake at the opening of trout season in the spring of1975 (Mercer County Park Commission).
Content development by Hunter Research, Inc. Graphic design by Douglas Scott
Topics. This historical marker is listed in these topic lists: Agriculture • Parks & Recreational Areas. A significant historical year for this entry is 1931.
Location. 40° 19.88′ N, 74° 45.491′ W.
Regionally, this marker is in Central Jersey and in Greater Princeton. It is also in the American Northeast and in the Mid-Atlantic. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once New Netherland and also one of the original Thirteen Colonies.
Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies: Horsin Around (approx. 0.8 miles away); Watershed Reserve (approx. 1.3 miles away); The Pole Farm Map (approx. 1½ miles away); London Towers (approx. 1.6 miles away); "Hello London" (approx. 1.6 miles away); Keep Mum - The World Has Ears (approx. 1.6 miles away); Going Silent (approx. 1.6 miles away); The "Pole Farm" (approx. 1.6 miles away). Touch for a list and map of all markers in Hopewell Township.
Also see . . .
1. Mercer Meadows - Mercer County Park Commission. (Submitted on July 15, 2026, by Richard Peterson of East Windsor, New Jersey.)
2. History Along the LHT.
History Along the LHT is placing historical markers at several dozen locations along the trail. Here are the historical markers that are currently installed, markers that will be installed soon, and other points of interest in the history of Hopewell and Lawrence.(Submitted on July 15, 2026, by Richard Peterson of East Windsor, New Jersey.)
Credits. This page was last revised on July 18, 2026. It was originally submitted on July 15, 2026, by Richard Peterson of East Windsor, New Jersey. This page has been viewed 8 times since then. Photos: 1, 2. submitted on July 15, 2026, by Richard Peterson of East Windsor, New Jersey. • Michael Herrick was the editor who published this page.

