|Hydrologic Unit Code (HUC):||05140206|
|Datum:||278.44 feet above NGVD29|
|Drainage Area:||203,000 square miles|
|County in which site is located:||Pulaski|
|Site managed by:||Murray Field Office|
This station is operated and maintained in cooperation with the U.S. Army Corps of Engineers, Louisville District.
This site is part of the USGS National Stream Quality Accounting Network (NASQAN) program.
Each year, a hypoxic zone (water without dissolved oxygen) forms in the northern Gulf of Mexico. This hypoxic zone is caused in part by excess nutrients delivered from the Mississippi River in combination with seasonal stratification of Gulf waters.
Delivery of excess nutrients, primarily nitrogen and phosphorus, from the Ohio River to the Mississippi River could contribute to hypoxia in the Gulf of Mexico. The USGS Ohio Kentucky Indiana Water Science Center is monitoring each major tributary into the Ohio River for nutrients and using the data collected for models that can compute nutrient concentrations.