Water enters a lake from overland flow off the surrounding land.
Source:https://books.google.com/books?id=Yin93qjdnAIC&pg=PA154&dq=%22overland+flow+off+the+surrounding+land.%22&hl=en&sa=X&ved=0ahUKEwjv_bHOtpDNAhWgHsAKHbmVDcAQ6AEIHTAA#v=onepage&q&f=truehttps://books.google.com/books?id=Yin93qjdnAIC&pg=PA154&dq=%22overland+flow+off+the+surrounding+land.%22&hl=en&sa=X&ved=0ahUKEwiAhLfh1ZDNAhUPkRQKHX9gAkwQ6AEIHTAA#v=onepage&q=%22overland%20flow%20off%20the%20surrounding%20land.%22&f=true