Si Collection, Upper Volume
Radical: Water (shuǐ)
Entry: 汱
Kangxi stroke count: 8
Page 608, Entry 01
Broad Rhymes (Guangyun): Pronounced quan (rising tone)
Collected Rhymes (Jiyun): Pronounced quan (rising tone)
These pronunciations match the sound of quan.
Literary Expositor (Erya), Explanations of Ancient Words: To fall.
Commentary: The appearance of water falling.
Also, according to Broad Rhymes (Guangyun): Hidden water.
Also, according to A Collection of Characters for Reference (Peixi Ji): The name of a river.
Also, pronounced xuan (rising tone), with the same meaning.