The MoRPh Rivers field survey was originally designed for use by citizen scientists and non-profit organizations. It now forms one component of a suite of tools developed for River Condition assessment within Natural England’s Biodiversity Metric 2.0.

We provide a complete set of training and software tools to enable you to assess and interpret River Condition in relation to the Biodiversity Metric. For more information see our Professional Training page.

River Condition Assessment Tools

The figure below outlines the structure of the River Condition Assessment. The individual components are discussed below:

1. MoRPh Field Survey

A field survey identical to MoRPh Rivers that characterises the local physical structure of a river channel and its margins. The survey is typically conducted over a river length of 10 to 40m.

2. MoRPh5

A sequence of 5 adjacent MoRPh surveys quantifies over 30 indicators that contribute to a preliminary condition score for a river subreach.

3. River Type Survey

A desk-based reach-scale (5 to 10 km) study identifies the hydrogeomorphological river type. This translates the preliminary condition score for each MoRPh5 into a final condition score, which reflects what is achievable for that river type.