Figure 2.16a.  Ammonium concentrations (mg/l) at three stations representing the Cape Fear River (NC11), the Black River (B210), and the Northeast Cape Fear River (NCF117), June 1995-June 2001.

Figure 2.16b. Ammonium concentrations (mg/L) at three stations representing the upper (NAV), middle (M54), and lower (M18) Cape Fear Estuary, June 1995-June 2001.