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Potential effect of climate change on thermal zones and cold patches in the Siletz River watershed, Oregon (USA) based on thermal infrared data collected on 5–7 August 2001. (a) Reaches where thermal zones would change if water temperature increases by 2°C simultaneously. (b) Distribution of cool (<15°C) patches in the past (August 2001) and if water temperature increases by 2°C in the future
