Salmon began to evolve into the species around today about six million years ago. Salmon have been used as a food source for humans for thousands of years. Humans used large numbers of salmon as far back as 9,000 years ago. The early salmon runs were perhaps the most productive in the history of salmon. The Colombia River made netting, spearing, and trapping the fish pretty easy for the native people.

During the Ice Age, salmon took refuge in areas such as the southern Oregon coastline, the California coastline and the Queen Charlotte Islands of British Colombia. These areas were not covered in ice, or affected by unstable rivers. Salmon were most likely more abundant when the climate was cool and wet; and less abundant during warm, dry periods.

Some topics in this essay:
Colombia River, Native American, Native Americans, Opinion Based, Sockeye Coho, British Colombia, History Salmon, Status Seven, Robert Bell-Irving, Ice Age, field trip, endangered species list, ago salmon, colombia river, british colombia, john day, cattle waste, history salmon, fish salmon, golf courses, spawning grounds, salmon endangered species,