However, there has been recent suburban residential and commercial development in much of the watershed. Big Timber Creek drains an area of 63 square miles. The mainstem and most of the South Branch divide Gloucester and Camden Counties before flowing into the Delaware River near Brooklawn, south of Camden. The mainstem is less than four miles long. The major impoundments are Blackwood Lake, Grenloch Lake, Hirsch Pond, and Nash s Lake.
Water quality is fair to good, with nutrients mildly elevated and bacteria elevated.
Lead may be a problem with regard to aquatic life support. Big Timber Creek is subject to a variety of potential pollution sources due to the large number of point sources within the watershed.