średnia głębokość

The sea in the area has an average depth of 60 feet.

Its average depth is 15m with 58.2m as a maximum.

Its average depth must have been about 5 meters and in some places perhaps 10.

The lake is at an average depth of 12 feet.

The average depth of the lake is just over twenty feet.

The average depth of new wells in 2001 was 238 meters.

The average depth of the ocean is 2 or 3 miles.

The lake has an average depth of only 4 m.

The average depth of the three zones from top to bottom is 900, 1,100, and 1,500 feet.

Apparently the average depth of the growth was eight inches.