West Twin River 303(d) validation NER_03_CMP12 -

Purpose

The West Twin River (WBIC = 87000, assessment units 9948, 9949, 9950, 18050, & 18051) is currently on the 303(d) list. However, some of the data used to determine the impairments are old and need to be updated and verified. This project will also compile existing data on the West Twin River to update data documentation sheets. This project will improve the accuracy of the 303(d) list.

Outcome

1) The West Twin River will be monitored at five locations: one site in each assessment unit 9948, 9949, 9950, 18050, & 18051. 2) A habitat assessment will be conducted in each assessment unit. Also continuous dissolved oxygen (DO) and temperature monitoring will be done for one week in each assessment unit. 3) Habitat assessments and continuous DO monitoring will be done in July or August 2011. 4) All data will be entered into appropriate databases by February 2012, 5) Final report will be complete by June 30, 2012.

Related Reports

Run Project Summary Report
View Umbrella-Projects
View Related-Projects

Targeted Monitoring
Special Project
NER_03_CMP12
2011
Complete
 
Reports and Documents
Continuous dissolved oxygen, temperature, pH, specific conductivity data West Twin River at CTH Y (10029483) July 14-25, 2011.
Continuous dissolved oxygen, temperature, pH, specific conductivity data West Twin River at Maribel Caves (10034796) July 14-25, 2011.
Continuous dissolved oxygen, temperature, pH, specific conductivity data West Twin River at CTH Z (Hwy 147)(10012506) July 1-13, 2011.
Summary report of monitoring conducted on the West Twin River between the confluence with the Devils River/Neshota and river mouth.
Continuous dissolved oxygen, temperature, pH, specific conductivity data West Twin River at Melnik Road (10009868) July 1-13, 2011.
Continuous dissolved oxygen, temperature, pH, specific conductivity data West Twin River at Shoto Conservation Club access 10034797) July 26-Aug.3, 2011.
Total Phosphorus monitoring report.WAV TP REPORT - West Twin River at Melnik Rd
Total Phosphorus monitoring summary report WAV TP REPORT - West Twin River at County Highway Z
Total Phosphorus monitoring summary report WAV TP REPORT - West Twin River at Shoto
 
Activities & Recommendations
Monitor or Propose 303(d) Listing
1) The West Twin River will be monitored at five locations: one site in each assessment unit 9948, 9949, 9950, 18050, & 18051. 2) A habitat assessment will be conducted in each assessment unit. Also continuous dissolved oxygen (DO) and temperature monitoring will be done for one week in each assessment unit. 3) Habitat assessments and continuous DO monitoring will be done in July or August 2011.
Monitor or Propose 303(d) Listing
West Twin River (WBIC 87000) will be monitored at five locations: one site in each assessment unit 9948, 9949, 9950, 18050, & 18051. 2) A habitat assessment will be conducted in each assessment unit. Also continuous dissolved oxygen (DO) and temperature monitoring will be done for one week in each assessment unit. 3) Habitat assessments and continuous DO monitoring will be done in July or August 2011.
 
Watershed
 
Waters