Lake Orient IA 05-NOD-1396

Adair County S20T74NR31W approx 1 mi SW of Orient.

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 05-NOD-00485-L_0

Overall Use Support

Partial

Aquatic Life Use Support

Partial

Fish Consumption

Not assessed

Primary Contact Recreation

Not assessed

Drinking Water

Not assessed

Documentation

Assessment Comments

Basis for Assessment

DNR Fisheries (Bonneau) not familiar w/ this lake. All parameters sampled by ISU in 1990 (secchi, NO3, total-P, chl-a, and TSS) within 1 SD of the respective mean for all 96 lakes sampled in 1990; average levels of secchi depth and total-P are worse than the overall averages for the 86 SPO impoundments sampled in 1990 and 1992; average levels of chl-a and TSS are approx equal to the overall averages. Lake has a relatively high sedimentation rate (4.6 cm/yr) and a relatively short life expectancy (43 years) for an SPO impoundment in Iowa. DNR fishing forecast for 1994 notes the following regarding Orient: "always turbid water." Although lake is designated for swimmable uses, the lake does not have a swimming beach, and Bachmann et al report swimming use as zero.