Watershed Management Area 19 is the largest watershed in south central New Jersey, and is comprised of the North Branch, South Branch and Mainstem of the Rancocas Creek, including Mill Creek. Portions of Burlington, Camden, and Ocean Counties, and approximately 33 municipalities are included in this management area which covers 360 square miles, and reaches deep into the Pinelands.
Of the 360 square miles, the North Branch drains 167 square miles and 144 miles is drained by the South Branch. The North Branch is 31 miles long and is fed by the Greenwood Branch, McDonalds Branch and Mount Misery Brook. The major tributaries to the South Branch include the Southwest Branch Rancocas Creek, Stop the Jade Run, Haynes Creek and Friendship Creek.
The mainstem flows about 8 miles and drains an area of approximately 49 square miles before emptying into the Delaware River at Delanco and Riverside. Tidal influence occurs for about 15 stream miles extending the entire length of the mainstream to the dam at Mount Holly on the North Branch, Vincentown on the South Branch and Kirby Mills on the Southwest Branch.
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