Si Collection, Upper Volume Radical: Water (shuǐ) Entry: 渷 Kangxi Strokes: 13 Page 635, Entry 13 Broad Rhymes (Guangyun) and Collected Rhymes (Jiyun) indicate the pronunciation is yan (falling-rising tone). Correct Rhymes (Zhengyun) indicate the pronunciation is yan (rising tone). It is a river name. It is the same as the character yan. It is an alternative name for the Ji River.