Natural Resources Wales (NRW) has declared that parts of Wales are now in "prolonged dry weather" status following a series of record-breaking heatwaves and extended dry periods this spring and summer. The agency warns that the environment is "starting to show signs of strain."
Affected Areas and Criteria
The worst-affected areas, located in north and south-east Wales, have moved from "normal" to "prolonged dry weather" status. This decision is based on hydrological and environmental factors, including pressures on rivers, groundwater levels, fisheries, wildlife, land management, and the wider natural environment.
Prolonged dry weather is a natural event that has become more likely due to climate change. It is the first step in NRW's Drought Plan, occurring when rainfall is lower than expected for a sustained period, leading to low river, reservoir, and groundwater levels, as well as drying land and soils.
Rainfall and Temperature Data
While Wales as a whole received average rainfall in June, some catchments—including Clwyd, Dee, and Upper Severn—experienced below-average amounts. So far in July, Wales has received only 5% of expected rainfall, with the current hot, dry weather forecast to continue into next week. The intensity of the weather means that without significant and sustained rainfall, catchments could deteriorate further.
NRW teams report exceptionally low river flows in some stretches of north and south-east Wales, and groundwater levels are receding. River temperatures have been recorded at or above the 20°C threshold, which can become dangerous for fish during low flows. The Wye and Usk rivers peaked at over 26°C.
Impact on Wildlife and Environment
Rhian Thomas, sustainable water and nature manager at NRW, said: "The exceptional series of heatwaves we’ve experienced this spring and summer are now starting to take their toll on our rivers, lakes, habitats and wildlife. In response, we’ll be stepping up our actions and monitoring across Wales to help ease the pressure on the environment, land and water users, as well as responding to environmental incidents linked to dry weather."
NRW teams have reported dry riverbeds in north Wales, concerns over salmon welfare, and fish in distress. The heat has also impacted the countryside, leading to a major incident declaration last weekend following a number of devastating wildfires in north Wales.
Looking Ahead
The move to prolonged dry weather status follows another record-breaking spring and summer last year, which saw drought declared for most of Wales. Thomas added: "We expect these extreme weather patterns to become more frequent as our climate changes – with wetter winters and drier summers becoming the norm. We support water company messages to customers to continue to use water wisely. Every drop we waste at home or at work, is less water to help keep our environment healthy when it needs it the most."
NRW's decision was shared with the Wales Drought Liaison Group, chaired by the Welsh Government and comprising senior decision-makers from NRW, the Met Office, water companies, Public Health Wales, farming unions, and local authority representatives.
