River levels across Wales are approaching all-time lows as the country braces for an imminent "environmental drought" declaration. Wales has seen about five per cent of its average July rainfall, after a run of back-to-back heatwaves and a drier-than-usual spring.
Afonydd Cymru, which represents Wales' rivers trusts, said low flows were causing "significant problems," killing fish and other wildlife, while farming unions warned of failing crops and heat-stressed livestock. Natural Resources Wales (NRW) said it was closely monitoring the situation and an announcement is expected later on Thursday. Rivers classed as exceptionally low include the Clwyd, Alwen, Alyn, Clywedog, Dyfi and Conwy in the north, and the Wye along the border with England.
NRW last week moved north and south-east Wales to "prolonged dry weather" status — the first step toward drought — triggering enhanced monitoring of waterways and wildlife sites. Huwel Manley of NRW said a number of watercourses were drying up and "even larger rivers are running at lower flows than usual." Extra water is being released from reservoirs to support flows on the Clwyd, Wye, Severn and Dee.
While some rain is forecast for the weekend, it will take time for river systems to recover, Manley warned. Parts of the country could see an "environmental drought" declared — meaning shortages in rivers and soils are harming ecosystems, rather than threatening drinking water. Until then, the public is urged to use water carefully, for the sake of wildlife and the wider environment.
Authorities are urging households and businesses to use water sparingly even though drinking supplies are not yet threatened. The precaution is meant to protect ecosystems that cannot speak for themselves — fish stranded in shrinking streams, wetlands drying before autumn rains. Farmers, already facing heat-stressed livestock and failing crops, are being advised on irrigation limits. The hope is that a measured response now prevents a sharper crisis later, when low flows begin to threaten the reservoirs that supply homes.## What to watch
The declaration, if it comes, would be a formal acknowledgment that the crisis has moved beyond inconvenience toward ecological harm. Rivers that normally buffer summer heat for fish and plants are now themselves at risk, and the recovery will lag the rain by weeks. Authorities are urging restraint, but the deeper question is whether one dry summer is an outlier or the shape of a hotter, drier future for a country long assumed to be wet.
Until then, the public is urged to use water carefully, for the sake of wildlife and the wider environment.
