Meadow Lake IA 04-LDM-1089

Assessment Comments

Clean Lakes Classification study in 1990.

Basis for Assessment

Assessment changed from PS in 1992 report to FST based on recommendation of DNR Fisheries.   Lake was monitored as part of ISU Clean Lakes classification study in 1990.   Levels of P, NO3, chl-a, secchi, and TSS indicate no special WQ problems*.   Lake was also monitored as part of 1990 UHL Iowa lakes study.   A loss of depth was reported (max depth from 25' in 1979 to 19' in 1990; thus lake was assessed as PS.   DNR Fisheries staff (Bonneau), however, feels that lake fully supports uses but is threatened by siltation from ag runoff.   Although desig for swim uses, mgmt area has not been developed for primary contact rec.  * Average levels of all parameters sampled in 1990 w/in 1 SD of the respective mean for all 96 lakes.   DSC (1991:4) states that "WQ and recreational use ar both high in Meadow Lake.  Neither appear to be adversely impacted by siltation or other nonpoint sources of pollution."