Pleasant Creek Lake IA 02-CED-459

Linn County S31T85NR8W 4 mi. NNW of Palo.

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 02-CED-00310-L_0

Overall Use Support

Fully

Aquatic Life Use Support

Fully

Fish Consumption

Not assessed

Primary Contact Recreation

Fully

Documentation

Assessment Comments

Monitored in 1990 by ISU as part of Clean Lakes Classification Study.

Basis for Assessment

Both fishable and swimmable uses were assessed as "fully supported" for the following reasons: (1) results of monitoring in 1990 show that average levels of secchi depth, total-P, and TSS are all better than overall averages for the 116 SPOLs sampled in 1990 and 1992; average level of chl-a approx. equal to the overall average; thus, lake has some of the best water quality of any SPO impoundment in Iowa; (2) according to Bachmann et al. (1994), lake receives exceptionally high use for both fishing and swimming; (3) lake has extremely low sedimentation rate (0.5 cm/ yr) and extremely long life expectancy (1093 years) for an impoundment in Iowa; (4) 100% of watershed is in approved soil conservation practices (5) nuisance algal blooms are minimal, and fishkills are not a problem. DSC (1991) reports that WQ is > average, fish & rec use very high, and no impairments for NPSP.