That portion of surface runoff that we can generally count on as a stable source of freshwater from year to year is best described as
A) surface water
B) drainage basin
C) reliable runoff
D) watershed
E) precipitation

Question

Quizplus · Accepted Answer

Reliable runoff is the portion of surface runoff that we can generally count on as a stable source of freshwater from year to year. This is because it comes from precipitation that infiltrates into the ground and is stored as groundwater or slowly released into streams over time. In contrast, surface water and precipitation can vary greatly from year to year depending on weather patterns, making them less reliable sources of freshwater. A drainage basin and watershed are geographical terms that describe the area of land drained by a river and its tributaries, which can include both reliable and unreliable sources of freshwater.

That Portion of Surface Runoff That We Can Generally Count