Uppian

According to the Old English Dictionary:

uppian

p. ode To mount up, rise :-- Ðæt wæter, ðonne hit bið gepynd, hit miclaþ and uppaþ and fundaþ wið ðæs ðe hit ǽr from com ad superiora colligitur, Past. 38 ; Swt. 277. 7. uppian