The term "foodshed" is similar to the concept of a watershed: while watersheds outline the flow of water supplying a particular area, foodsheds outline the flow of food feeding a particular area. Your foodshed encompasses the farm, your table and everything in between. It is the geographic location that produces the food for a particular population. The term is used to describe a region of food flows, from the area where it is produced, to the place where it is consumed, including: the land it grows on, the route it travels, the markets it passes through, and the tables where it ends.
The modern US foodshed includes the entire world. Much of our food traverses the globe to reach our dinner table. In fact, food can often travel back and forth thousands of miles to different processing plants before it eventually reaches you.
Foodsheds are particularly useful in describing and promoting local food systems. When we look at our agricultural system in terms of the origins and pathways of our food items, then it becomes easier to expand these pathways and focus them at the local level.Kansas Foodshed Alliance