The main outflow of Lake Jean is an unnamed tributary of Kitchen Creek.[1] Its inflows include unofficially named streams such as "Beaver Tributary" and "Ganoga Tributary", as well as direct drainage.[2] Both the lake's main inflow and its main outflow are around 10 feet (3.0 m) wide and 1 to 2 feet (0.30 to 0.61 m) deep.[3] The elevation of the lake is 2,218 feet (676 m) above sea level.[4] The lake has a highly irregular shape.