Um... are you saying that this smaller lake in the south drains both to the Sea of Dharr *and* to the ocean? Because that sounds... unlikely.Can't believe you caught that, but actually (it may be unclear from the map), there's a spring from the mountains in the south, on the coastline which feeds a lake, and a river leading to the Sea of Dharr. I never did think where the saltiness of that water mass may derive from, but gun to the head, I'd say deep seated minerals.
Oh! The same spring also feeds another small river leading to the sea in the south
ETA: just noticed your response to my first post. This is a big landmass, but the relative size of the places suggests something way smaller, like at best Germany-sized