ADBNet

Assessment Comments

Basis for Assessment

Assessment changed from PS in the 1992 report to FS for the 1994 report for the following reasons:  (1) DNR Fisheries considers this as one of the highest quality man-made lakes in the state; (2) results of monitoring data in 1990 show that average levels for secchi depth, total-P, and TSS are better than the overall means for the 116 SPOLs sampled in 1990 and 1992 +/- 1 SD (e.g., one of the highest secchi readings and one of the lowest TSS of the dataset).   Average level of chl-a (43.9 mg/m3) was approx equal to the overall mean (43.6 mg/m3); average level of total-P (71.4 mg/m3) was approx one-half the overall mean (140.2 mg/m3).   Levels of use for swimming and fishing are typical for SPO impoundments in Iowa.   Indicators for tranparency, productivity, and longevity are just shy of the best 10% of SPO impoundments in Iowa; considering location in steep topography, lake about the best possible; thus assess as FS.