Lake Icaria IA 05-NOD-1398

Assessment Comments

Basis for Assessment

Both fishable and swimmable uses were assessed as PS for the 1994 report for the following reasons: (1) BPJ of DNR Fisheries ("muddy lake"), 2 average levels of all parameters sampled by ISU in 1990 (secchi, NO3, total-P, chl-a, and TSS) were at, or better than, overall mean values for all 96 lakes; i.e., data from 1990 show relatively good water quality; (3) levels of all fish contams.  in samples of CCAT fillets collected in 1993 were < 1/2 FDA action levels; (4) lake has relativey low sedimentation rate (1.3 cm/yr) and long life expectancy (268 years) for SPO impound.  in Iowa; level of fishing use and swimming use reported by Bachmann et al.  (1994) are both extremely high for an Iowa SPOL.  Thus, lake has above average WQ & levels of use for fishing and swimming, and has fish with very low levels of contamination.  DSC (1991) notes improving fishery due to NPS control prgs in WS.