Natural Flood Management in Calderdale

An infographic titled "Natural Flood Management (NFM)" presenting key statistics for Calderdale as of September 2025. The graphic features five main data points: Over 96,000 trees planted, illustrated by a group of people planting saplings. 427 new leaky dams, shown with an illustration of a horse dragging a log near a stream. £444,000 allocated by Calderdale Council and the Environment Agency for future projects, represented by a large money bag icon. 5 km of new hedgerows across hillsides, pictured over a landscape of green rolling fields. Approximately 6,000 sphagnum moss plugs planted on managed moorland, shown with an illustration of a rugged green hillside.

Natural Flood Management (NFM) plays a vital role in Calderdale, helping to slow the flow of water from the surrounding hillsides and reduce flood risk in our valleys. It is also a key priority within the Council’s Flood Action Plan.

Example of NFM measures

  • New leaky dams and woody debris structures
  • Improved land management to slow surface run-off
  • Soil restoration and rewetting
  • Expanded tree planting and hedgerow creation
  • Peatland and moorland restoration initiatives

Current projects

Take a look at the interactive map to see completed and ongoing NFM projects across the Calder catchment. It details the types of measures, funding sources and partnerships that have made this work possible.

The Council have compiled a number of case studies that show the positive impact of natural flood management across the borough. They showcase the work of landowners, farmers, volunteer groups, and partner organisations who are delivering natural solutions on the ground.

Case studies include

Bridestones Moor

Calderdale’s first community-owned nature reserve is a non‑profit led by Bridestones Rewilded CIC. Their mission is to restore and protect the landscape through conservation, education, and community action in an owned nature reserve.

Norland Moor

A cherished Local Nature Reserve and the last expanse of open moorland in the area has recently seen a series of targeted interventions aimed at tackling flooding and erosion.

Annabut Lee Farm

Perched above Cragg Vale, Annabut Lee Farm sits among historic grazing land and upland views. After experiencing flooding in Mytholmroyd, the landowners set out to reduce downstream flood risk and restore their land’s natural balance.

Hardcastle Crags & Broadhead Clough

Across both landscapes, volunteers from Slow the Flow have been rolling up their sleeves and helping protect Calderdale since 2016. Their NFM work is reducing flood risk by slowing water as it runs from the hillsides into the River Calder.

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