The Northern Territory road toll has risen to 11 following a single vehicle crash in the Darwin rural area.

The crash occurred near the intersection of Girraween Road and Power Road in Girraween around midnight last night. The vehicle left the road, collided with a tree and came to rest partially submerged in a lagoon adjacent to Power Road.

Police and NTFRS responded to the scene where the 42yo female driver was extracted from the vehicle. The driver was treated at the scene and conveyed to Royal Darwin Hospital where she later died.

Investigators from the Major Crash Investigation Unit are currently on scene. Diversions are currently in place and motorists are urged to slow down and proceed through the area with caution.

Police are calling for witnesses who may have information or who were in the area of the intersection of Power Road and Girraween Road around the time of the crash to contact 131444.

Investigations are continuing.