The Afon Bach - Surveys

Bank erosion with an undercut

MoRPh Surveys

In our continuous efforts to monitor and assess the health of river ecosystems, last week we conducted several MoRPh surveys along the Afon Bach. The purpose of these surveys was to gather vital data regarding the physical habitat and hydromorphological functions of different sections of the river. This information will enable us to make comprehensive comparisons of the Bach before and after completing restoration work.

Taking measurements of the module

Overview of Afon Bach

Afon Bach is currently classed as failing by the Water Framework Directive. Previous studies by the North Wales Rivers Trust revealed ecological failures with key species such as invertebrates.

Planned works for this project include tackling pollution at the source to improve water quality in addition to improving biodiversity along the Bach.

This includes:

• Environmental DNA testing to ascertain baseline species present.

• Tree planting

• Fencing

• brash revetments

• Farm nutrient plans and advice

• Easements

• Creating a wetland

Methodology

The MoRPH Survey, short for Modular River Physical Survey is a standardised approach utilised by river conservation bodies to assess the physical habitat and features of the different modules in a river. Our survey encompassed several key components, including:

1. Channel Bed Characteristics

2. Riparian (Bank Face and Top) Characteristics

3. Whole channel and margin pressures

4. Bed sediment and flow characteristics

A tributary where cattle roam freely into the river.

The MoRPH surveys conducted on the Afon Bach have provided valuable insights and measurements into both the river's current condition and measurements for future work to be conducted. Sign up for the newsletter to keep up to date with ongoing projects.