Water temperature is a key factor in the seasonal pattern of rivers. It affects invertebrate larvae hatch times, which will in turn impact fish growth rates and migrations. Changes in temperature by season and overall long-term trends will affect how river ecosystems develop and operate; sustained extremes of either high or low temperatures are unhelpful to the river’s ecosystems.
We record air and water temperature at various locations throughout the river. This is building a long-term data set reflecting natural changes and it also helps us measure the effectiveness of our bank management and tree planting work.