Final TMDLs Approved by EPA: Big Millpond

Big Millpond is an impoundment located near Welbourne in Worcester County, Maryland.  The impoundment lies on Swans Gut Creek, draining to Chincoteague Bay.  Swans Gut Creek lies in the Chincoteague Bay Drainage Basin, in the Lower Eastern Shore of Maryland.  Big Millpond is an artificial impoundment owned by Worcester County.  Its main purpose is for recreation.

On the basis of water quality problems associated with nutrients, Big Millpond, in the Chincoteague Bay watershed (02-13-01-06), was identified on Maryland’s 1998 list of WQLSs as being impaired.  Subsequent analysis associated with the nutrient TMDL evaluation revealed an excessive sedimentation problem.  The documents available below establishes Total Maximum Daily Loads (TMDLs) for the nutrient phosphorus and sediments entering Big Millpond. 

TMDLs of Phosphorus and Sediments
to Big Millpond, Worcester County, MD

(Approved on April 4, 2002)

EPA's Decision Letter

EPA's Decision Letter


bigmill_main_final.pdf (1445 KB)

Nonpoint Source Technical Memorandum

bigmill_techmemo_final.pdf (117 KB)

Comment Response Document

bigmill_crd_final.pdf (164KB)


Contact Information

Please direct questions or comments concerning this project to Maryland's TMDL Program at (410) 537-3818.