From 2000-2013 samples were collected from ten locations (later seven) twice per month. Analysis included Total Phosphorus, Total Kjeldahl Nitrogen, Ammonia-Nitrogen and Nitrate/Nitrite-Nitrogen. This information is used in the development of numeric nutrient criteria. Historical data is available from 11 stations.
2015 Ohio River Algal Bloom
From August 2015 to October 2015, the Ohio River experienced an unprecedented harmful algal bloom. During this event, ORSANCO and many agency partners collected water samples at numerous locations to monitor the bloom. The sample results are available here.
|West View, PA (ORM 5) 1999-2007||Download|
|East Liverpool, OH (ORM 40) 1999-2006||Download|
|Follansbee, WV (ORM 70) 1999-2006||Download|
|Wheeling, WV (ORM 86) 1999-2007||Download|
|Huntington, WV (ORM 306) 1999-2007||Download|
|Ashland, KY (ORM 319) 1999-2006||Download|
|Maysville, KY (ORM 407) 2000-2001||Download|
|Ft. Thomas, KY (ORM 462) 1999-2009||Download|
|Louisville, KY (ORM 600) 1999-2009||Download|
|Evansville, IN (ORM 791) 1999-2009||Download|
|Paducah, KY (ORM 935) 1999-2009||Download|