Overall water quality in the upper river basin is generally good according to the 1996 305 (b) report, with the worst water quality reported in Beaver Pond Creek and Dry Creek. (Strategy, 1998)
Elevenmile Creek is considered the one of the more impaired waterbodies in the Perdido basin flowing directly into Perdido Bay and flowing entirely within the state of Florida. The Creek has a long list of parameters of concern including: nutrients, turbidity, total suspended solids (TSS), biological oxygen demand (BOD), dissolved oxygen (DO), coliform bacteria, and ammonia. The creek’s headwaters are in Catonment and flow south draining the suburbs of Pensacola.