Grabensee

General data
- Name: Grabensee
- Water system: Danube
- Water type: Natural lake
- Progression: Moosach -> Mattig River -> Inn River -> Danube -> Black sea -> Mediterranean Sea -> Atlantic Ocean -> Planet Earth
- Climates: Continental, Mountain
- Continents: Europe
- Countries: Austria
Description
Grabensee is the northernmost and smallest of the Trumer Seen (Trumer Lakes), located in Salzburg, Austria. It is known for its natural setting, ecological significance, and relatively undisturbed shoreline. Receives water mainly from Mattsee, which is fed by Obertrumer See. Outflow is Moosach River, which drains into the Mattig River