NRW Gauging Station Improvements
Client: NATURAL RESOURCES WALES
- IMPROVEMENTS TO EXISTING ACCESS TRACK TO THE GAUGING STATION
- FLOOD RISK ACTIVITY PERMIT IN RIVER WORKING
- BLOCK STONE REVETMENTS
- GAUGING STATION REFURBISHMENT
- SSSI (SITE OF SPECIAL SCIENTIFIC INTEREST) AND SAC (SPECIAL AREA OF CONSERVATION)
NRW appointed Walters to carry out works to improve access to a key gauging station which monitors water levels within the Irfon River. The scheme involved the removal of failed gabion baskets upstream of an existing weir and installation of block stone revetments to protect the banks and the weir walls from erosion. The project also required the introduction of a further block stone revetment and block stone retaining wall downstream to create a turning area for NRW vehicles delivering the new ARC-boat utilised to monitor river levels to give advance flood warnings.
The track improvement included new drainage and gabion basket retaining wall and regrading works to create a usable access for NRW.
The gauging station building was also refurbished in line with current building regulations.
Walters ensured a short lead in to capitalise on dry weather. The site team worked efficiently and productively to complete the river work during low flow conditions. The project was completed in line with the temporary Flood Risk Activity Permit granted by NRW requiring control measures to ensure the works could be carried out safely, in an environmentally friendly manner and without risk of flooding adjacent land. A specific emergency incident plan was implemented to ensure the safety of the operatives working in the river that involved continual monitoring of weather and upstream river levels. The team worked closely with the NRW designer to ensure a high-quality finish in line with their requirements and advised on value engineering opportunities to reduce the overall cost of the project.
Walters consulted with all landowners in the vicinity of the works to ensure minimal disruption, agree access to the works and rent land for temporary compounds.