Reservoir storage levels

Up to date information about our current reservoir storage levels.

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Latest reservoir storage levels

Bristol Water operates four major reservoirs – Chew Valley Lake, Blagdon Lake, Cheddar and Barrow. These are the current levels of our largest reservoirs as of 01/09/2026.

The total reservoir storage for the Bristol Water area is at 54%. On the same date in 2025, storage was at 39%.

Graphic of the total reservoir storage levels
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Cheddar reservoir graphic displaying the current level at 43%

Cheddar Reservoir

01/09/2026 Cheddar reservoir storage is at 43%. On the same date in 2025, storage was at 26%.

Chew valley reservoir graphic displaying the level at 55%%.

Chew Valley Lake

01/09/2026 Chew Valley Lake reservoir storage is at 55%. On the same date in 2025, storage was at 39%.

Blagdon reservoir graphic showing the level is at 53%

Blagdon Lake

01/09/2026 Blagdon Lake reservoir storage is at 53%. On the same date in 2025, storage was at 38%.

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Monitoring and managing our supplies

Water is a precious resource and we encourage our customers to use it wisely, whatever the weather.

Thanks to our forward planning and the flexibility in our water network, we can balance our stored resources in a way that helps us manage supplies during drier periods. We also use artificial intelligence to manage our supplies in a way that cuts our energy use too, helping our environmental performance.

Cheddar reservoir

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