Water Situation Reports
2024
December Overview
Solent and South Downs (SSD) had below average rainfall in December, receiving 66% (59mm) of the long term average (LTA, 88.8mm). Monthly mean river flows across SSD ranged from below normal to notably high. End of month groundwater levels ranged from below normal to exceptionally high. Soils across SSD ended the month wetter than the average for December. End of month reservoir stocks were above average at Ardingly Reservoir (Ouse) and below average at Arlington Reservoir (Cuckmere).
The full report can be read in the Water Situation Report December
November Overview
Solent and South Downs (SSD) had average rainfall in November, receiving 102% (91mm) of the long term average (LTA) rainfall (89.6mm). Monthly mean river flows across SSD ranged from normal to notably high. End of month groundwater levels ranged from normal to exceptionally high. Soils across SSD ended the month wetter than the average for November. End of month reservoir stock at Ardingly Reservoir (Ouse) was above average, and below average at Arlington Reservoir (Cuckmere) .
The full report can be read in Water Situation Report November
October Overview
Solent and South Downs (SSD) had average rainfall in October, receiving 121% (104mm) of the long term average (LTA) rainfall (85mm). Monthly mean river flows across SSD ranged from above normal to exceptionally high. End of month groundwater levels ranged from normal to exceptionally high. Soils across SSD ended the month much wetter than the average for October. End of month reservoir stocks at Ardingly Reservoir (Ouse) were above average, and at Arlington Reservoir (Cuckmere) were below average.
The full report can be read in Water Situation Report October 2024
September Overview
Solent and South Downs (SSD) had well above average rainfall in September, receiving 239% (171mm) of the long term average (LTA) rainfall (72mm). Monthly mean river flows across SSD ranged from above normal to exceptionally high. End of month groundwater levels ranged from normal to exceptionally high. Soils across SSD ended the month much wetter than the average for September. End of month reservoir stocks were below average at Ardingly Reservoir (Ouse) and at Arlington Reservoir (Cuckmere).
The full report can be read in Water Situation Report September 2024
August Overview
Solent and South Downs (SSD) had below average rainfall in August, receiving 80% (48mm) of the long term average (LTA) rainfall (60.0mm). Monthly mean river flows across SSD ranged from normal to exceptionally high. End of month groundwater levels ranged from normal to exceptionally high. Soils across SSD ended the month drier than the average for August. End of month reservoir stock was above average at Ardingly Reservoir (Ouse) and was below average at Arlington Reservoir (Cuckmere).
Full details are available in the Environment Agency full report on average rainfall for August 2024.
Water Situation Forward Look
The Environment Agency’s river flow and projected groundwater levels for the period up to March 2025 are available in this report Water Situation Report forward look to March 2025.
Members can find historic water situation reports in the Members Area Water Situation Reports Archive.
