Big Flat Brook

{{Short description|Tributary of the Delaware River, New Jersey, USA}}

{{Use American English|date=February 2025}}

Big Flat Brook is the name of Flat Brook upstream of the inflow of Little Flat Brook, a tributary of the Delaware River, in Sussex County, New Jersey in the United States.Gertler, Edward. Garden State Canoeing, Seneca Press, 2002. {{ISBN|0-9605908-8-9}}

Big Flat Brook is {{convert|16.5|mi}} long.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. [http://viewer.nationalmap.gov/viewer/ The National Map] {{webarchive |url=https://web.archive.org/web/20120329155652/http://viewer.nationalmap.gov/viewer/ |date=2012-03-29 }}, accessed April 1, 2011