Young winemakers look at the river and think they can suck a bit of water out of it and there will be plenty behind it, but it's a series of lakes and it doesn't replenish. Last September the source of the Douro in Spain dried up for the first time.
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About the Douro RiverIt flows for about 550 miles from northern Spain through Portugal. Much of the river in Spain is not considered navigable. Therefore, river cruises take place mainly in Portugal and on the far western portion of the river in Spain.