The Huntington District of the U.S. Army Corps of Engineers issued this news release today.
HUNTINGTON, WV — Because of low water levels, the Huntington District of the U.S. Army Corps of Engineers will limit recreational boat lockage on the Ohio River.
Effective immediately and until conditions abate, navigation locks on the Ohio, which includes Willow Island Locks, Belleville Locks, Racine Locks, R.C. Byrd Locks, Greenup Locks and Meldahl Locks, will only lock recreational craft through on even-numbered hours (2, 4, etc.).
The locks on the Kanawha River – London, Marmet and Winfield Locks – will continue normal operations.
I've not found any similar statements from the Pittsburgh or Louisville districts.