Burr Oak Creek IA 02-CED-580

mouth (S12 T98N R16W Mitchell Co.) to Mitchell County Road T46 at W line S10 T98N R16W Mitchell Co.

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

Assessment Cycle

2000

Result Period

1996 - 1998

Designations

Assessment Methodology

2000 Methodology Document

Assessment Type

Evaluated

Integrated Report

Category 0

Legacy ADBCode

IA 02-CED-0490_1

Overall Use Support

Partial

Aquatic Life Use Support

Partial

Documentation

Assessment Comments

Assessment is based on results of the November 1994 DNR stream use assessment.

Basis for Assessment

SUMMARY: The Class B(LR) aquatic life uses remain assessed as "partially supported." EXPLANATION: Continue to use the assessment of support of the Class B(LR) uses developed for the 1996 and 1998 reports (see above). The results of the November 1994 DNR stream use assessment in Mitchell County--upon which the previous assessment of the Class B(LR) uses was, in part, based--are approximately 5 years old and thus can be used to assess current water quality conditions. As stated in the assessment developed for the 1998 report, follow-up monitoring is needed in this stream reach to determine the status of aquatic communities and habitats and to determine the degree to which the Class B(LR) uses may be impaired.

Monitoring and Methods

Assessment Key Dates

11/1/1994	DNR Stream Use Assessment

Methods

330	Fish surveys
375	Visual observation-- may not quantify some parameters-- single season-- by prof.
150	Monitoring data more than 5 years old

Monitoring Levels

Biological	2
Habitat	3
Physical Chemistry	0
Toxic	0
Pathogen Indicators	0
Other Health Indicators	0
Other Aquatic Life Indicators	0
# of Bio Sites	0
BioIntegrity	N/A

Causes and Sources of Impairment

Causes	Use Support	Cause Magnitude	Sources	Source Magnitude
Other habitat alterations	Overall Use Support	Moderate	Bank or Shoreline Modification/Destabilization Pasture grazing - Riparian	Moderate Moderate
Other habitat alterations	Aquatic Life Support	Moderate	Bank or Shoreline Modification/Destabilization Pasture grazing - Riparian	Moderate Moderate