|
New research released today by the Environment Agency suggests river
flows could drop drastically by 2050 as climate change puts increasing
stress on the water environment and wildlife across England and Wales.
The Environment Agency has produced a series of maps showing future
monthly changes in river flow across England and Wales - a first for
the UK. The research is crucial in helping to plan for future water
resources management.
The work used climate projections from the UK Climate Impacts
Programme and shows that by 2050 river flows in winter may rise by 10
to 15%, however river flows in the late summer and early autumn could
drop by over 50% and as much as 80% in some places. These patterns
would result in a drop in total annual river flow of up to 15%.
Changes in the frequency and intensity of storms which bring polluting
runoff to our rivers, and changes in river flows which dilute
discharges could put wildlife at risk from poorer water quality.
We will use these new river flow projections along with other emerging
research to look at the extent and likelihood of impacts on water
quality to plan what actions we and others should take.
Dr Paul Leinster, Chief Executive of the Environment Agency, said:
"This ground-breaking research provides significant information on the
effect of climate change on river flows, water quality and wildlife.
The maps suggest a much harsher future for the environment across
England and Wales. To be sure we can cope with the kind of changes
expected, we must act now."
There will also be regional differences in the timing of low flows.
Flows in Wales, the north of England and the west of England are
predicted to drop most in the late summer (July, August and September)
while low flows in the south and east of England are likely to extend
well into the autumn with even November river flows dropping to almost
half their current volume. [Map or graphics to exemplify]
Dr Leinster added: "The demand for water is also forecast to increase
which will only add to the increased pressure on the environment.
Water companies already take account of climate change in their
long-term plans for providing secure supplies. However, this study
reinforces the need for us all to play our part in using water wisely.
We will publish a new Water Resources Strategy early in 2009 setting
out the actions which we and others will need to take to make sure
there is enough water for people and the environment."
|
