Lee Meadows Swamp
The Lee Meadows Swamp in eastern Morris County of New Jersey in the United States was originally a 500-acre (2.0 km2) swamp with low woodlands surrounding it. It is located in the southeastern section of Parsippany-Troy Hills Township and the western section of Hanover Township, in Morris County, New Jersey. Due to the construction of office buildings and roads in the 1980s, the swamp has become much smaller.
During the late Triassic and early Jurassic periods, when the North American plate separated from the African plate, an aborted rift system was created. The resulting rift valley, known as the Newark Basin, was filled with alternating layers of red bed sediment and flood basalts. Over millions of years, the rift valley was faulted, tilted, and eroded, until the edges of the hard flood basalt layers formed ridges. Prior to 20,000 years before the present, an ancestral Passaic River flowed through a gap in these ridges. This changed when the Wisconsin Glacier, a massive continental ice sheet which formed during the last ice age, advanced on the region and permanently plugged the gap with glacial rubble. As the glacier eventually melted back, water pooled behind the ridges (known today as the Watchung Mountains), forming Glacial Lake Passaic. After thousands of years, the lake drained leaving behind many swamps, including Lee Meadows.
The swamp is feed by three small streams. The first exits Mirror Pond, flowing though a low lying woodland. The second stream exits a pond on the western side of Route 202 and once flowed through open fields but now flows though an office building complex. The two streams meet and this is where the woodland swamp starts. The third stream starts near the intersection Route 10 and Route 202, on the north side of Rt. 10, and flows east toward Route 287.
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