How do I get gage-height and flow information specifically for the Ohio River?
Gage-height data more than 31 days old (no longer showing on NWISWeb) can be requested from the USGS Kentucky Water Science Center or the West Virginia Water Science Center for Ohio River streamgages bordering their respective states; click on “Questions about sites/data” at the bottom of the NWISWeb pages to make an email request. The U.S.Army Corps of Engineers (USACE) also collects information at some other locations that don’t appear on our web page (for example, see here). Because the Ohio River is such a highly regulated stream, flow information is very sparse; however, the USACE is generally the best source.