Items you have checked out may be renewed one time, as long as no other patron has already placed a hold on the item.
You can renew an item in-person at the library, on the phone, or online.  To renew items online, simply visit beaverlibraries.org, click On-line Catalog, then select Renew (be sure to have your library card handy, as you'll need to enter your barcode number).