Lower Gar Lake IA 06-LSR-1646

Dickinson County S32T99NR36W 2 mi. NE of Milford.

This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.

Assessment Cycle

1994

Result Period

1990 - 1992

Designations

Assessment Type

Monitored

Integrated Report

Category 0

Legacy ADBCode

IA 06-LSR-02805-L_0

Overall Use Support

Partial

Aquatic Life Use Support

Partial

Fish Consumption

Not assessed

Primary Contact Recreation

Partial

Documentation

Assessment Comments

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

Basis for Assessment

Swimmable uses were assessed as PS and fishable uses were assessed as PS for the following reasons: (1) results of monitoring in 1990 show that average levels of chl-a is better than the overall averages for the 116 SPOLs sampled in 1990 and 1992; the average levels of secchi depth of secchi depth and TSS are toward the poor end of the overall averages +/- 1 SD; the average level of total-P (0.76 ppm) is one of the highest levels of total-P of the 116 lakes sampled and suggests a problem with organic enrichment. Primary cause of poor water quality is shallowness (mean depth = 1.1m) and resultant resuspension of nutrients and sediment. Lake has low frequency of fishkills. Lake has one of the highest sed rates (2.6 cm/yr) and shortest life expect (41 yrs) of any natural SPOL. Lake has relatively low use for fishing & swimming.