White Oak Conservation Area Lake IA 03-SSK-929

Assessment Comments

Assessment is based on results of (1) ISU lake survey and (2) surveys by IDNR Fisheries Bureau.

Basis for Assessment

Fishable uses were assessed as FST, and swimmable uses were not assessed for the following reasons:  (1) results of ISU monitoring show that average levels of secchi depth, total-P, chl-A, and TSS are better than overall averages for the 116 SPOLs sampled in 1990 and 1992; (2) according to Bachmann et al.  (1994), the lake has a relatively high sedimentation rate (3.1 cm/yr) and relatively long short expectancy (79 years) for a small impoundment; (3) lake does not have problems with fishkills and does not have problems with aquatic vegetation.   According to Bachmann et al.  (1994), the lake is not used for swimming; thus, no information exists to assess support of swimmable (Class A) uses.