Upper Iowa River IA 01-UIA-245

from confluence with unnamed tributary (NE 1/4 S21 T100N R12W Howard Co.) to IA/MN state line in S11 T100N R14W Howard Co.

This is a Legacy Assessment. Assessments prior to 2016 were developed under the previous USPEA guidelines, and have a different format.

Assessment Cycle

2006

Result Period

2002 - 2004

Designations

Class B(WW)

Assessment Methodology

2006 Methodology Document

Assessment Type

Not Assessed

Integrated Report

Category 3a

Legacy ADBCode

IA 01-UIA-0120_5

Overall Use Support

Not assessed

Aquatic Life Use Support

Not assessed

Fish Consumption

Not assessed

Documentation

Assessment Comments

Insufficient information available to develop assessments. Previous assessments were based on results of an IDNR stream use assessment in September 1995.

Basis for Assessment

SUMMARY: The Class B(WW) aquatic life uses are considered "not assessed" due to the age of the biological data upon which the previous assessments of these uses ("fully supported") were based. Fish consumption uses remain "not assessed" due to the lack of fish contaminant monitoring in this river segment.

EXPLANATION: The 2004 assessment for this stream segment was based on results of biological monitoring conducted as part of an IDNR stream use assessment in 1995. Because the data upon which this assessment was originally based have aged beyond 10 years--and are thus considered too old to characterize current water quality conditions--the Class B(WW) uses of this segment are now considered "not assessed". Thus, this stream segment is moved from IR Category 2a to 3a (insufficient information to assess any uses).

Fish consumption uses remain "not assessed" due to the lack of fish contaminant monitoring in this stream segment.