Stream channels can be directly extracted by querying which grid?
A) A flow direction grid
B) A flow accumulation grid
C) An elevation surface (such as a DEM)
D) A watershed grid

Question

Quizplus · Accepted Answer

Stream channels are often delineated from a flow accumulation grid, which shows the number of upstream cells contributing flow to each cell. Areas with high flow accumulation values indicate potential locations of streams or rivers.

Stream Channels Can Be Directly Extracted by Querying Which Grid