D.O. and Temperature Monitoring

During the months of May through October, ORSANCO interrogates thirteen stations for dissolved oxygen (D.O.) and temperature data once per day, Monday through Friday, for the previous 24-hour period. This data is compiled in-house to produce a report showing the minimum, maximum and average of the acquired D.O. and temperature readings. ORSANCO has also deployed Hydrolabs at three locations: Newburgh, J.T. Myers, and Smithland. This daily data is used in place of the Corps of Engineers data. ORSANCO's water quality criteria for the protection of warm water aquatic life habitat are:

• The minimum D.O. concentration shall not be less than 4.0 mg/L at any time.
  
  
• Average D.O. concentration shall be at least 5.0 mg/L for each calendar day.
  
  
• During the April 15 - June 15 spawning season, a minimum concentration of  5.0 mg/L shall be maintained at all times.

Data

Map of Monitoring Locations