That's the same order as five percent of Earth's surface water.

The Government gave the church rights to surface water in exchange.

Present use of surface water in the basin is 17.0 km3.

Back when Mars had surface water and an atmosphere, life did begin.

As a result, he said, it is not ordinarily found in surface water.

California recognizes several different types of rights to take and use surface water.

Surface water has lost its unique character due to impact of human activity.

As a result these upland areas have very little surface water.

These problems may be for surface water, groundwater, or the combination.

This process also takes place when the land is irrigated by surface water.