The upper LOCATION@1 , from the source past the trading city of LOCATION@2 to the bend in the current river , once emptied into a now-gone lake , while the lower LOCATION@1 started in hills near that lake and flowed south into the LOCATION@3 .

The upper LOCATION@1 , from the source , past LOCATION@2 , to the bend in the river , used to empty into a lake , but the lake has now gone .
