Central Park Lake IA 01-MAQ-38

Assessment Comments

Monitored by ISU in 1990 as part of Clean Lakes Classification study (1994).

Basis for Assessment

Both the fishable and swimmable uses were assessed as PS for the following reasons:  (1) BPJ of DNR Fisheries; (2) results of monitoring in 1990 show that average levels of secchi depth, chl-a, and TSS are better than overall averages for the 116 SPOLs sampled in 1990 and 1992; average level of total-P was worse than overall mean but was within 1 SD; (3) according to Bachmann et al.  (1994) lake has a moderately high sedimentation rate (2.3 cm/yr) and a life expectancy of 107 years; (4) they also report that fishkills are not a problem.   Swimmable assessed as PS for the following reason:  Bachmann et al.  (1994) report that the lake has "high nuisance blooms."  These blooms can impair swimming uses although use figures for swimming reported by Bachmann et al.  (1994) are relatively high; thus, impaired by high levels of nutrients in ag NPSP.