Svartediket is a lake in the city of Bergen in Vestland county, Norway.

The 0.5-square-kilometre (0.19 sq mi) lake lies immediately north of the mountain Ulriken, northeast of the Store Lungegårdsvannet bay.

The lake is the main source of drinking water for the central parts of the city of Bergen.

There is a pumping station and treatment facility build adjacent to the lake inside the mountain Ulriken.

In 2004, Bergen was hit by a Giardia lamblia epidemic which had its source in the lake Svartediket.