Jordan Creek IA 05-CHA-1330

mouth (S1 T70N R21W Wayne Co.) to confluence with unnamed tributary in E 1/2 NW 1/4 S26 T70N R21W Wayne Co.

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

Assessment Cycle

1998

Result Period

1994 - 1996

Designations

Assessment Type

Not Assessed

Integrated Report

Category 0

Legacy ADBCode

IA 05-CHA-0062_0

Overall Use Support

Not assessed

Aquatic Life Use Support

Not assessed

Documentation

Assessment Comments

Basis for Assessment

Did not have sufficient information to develop an assessment of support of the Class B(LR) aquatic life uses. Although not designated for Class C drinking water uses, Jordan Creek is tributary to Rathbun Lake, a Class C waterbody. Information from sampling conducted by the U.S. Army Corps of Engineers from May through September 1997 as part of study of the Rathbun Lake watershed to assess levels of nutrients and pesticides showed 3 of 7 samples having levels of atrazine that exceed the MCL of 3.0 ug/l. The MCL was exceeded twice in June and once in August 1997. Average level of atrazine in the seven samples was 2.6 ug/l; median =2.17 ug/l; range of 0.84 to 4.22 ug/l. Levels of alachlor were all less than the MCL; levels of cyanazine were less than the MCLG of 1.0 ug/l. A summary of the 1997 ACOE sampling in the Rathbun Lake watershed is available.