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Nore River Hydrology Study

Clifton Scannell Emerson Associates (CSEA) have been appointed by Kilkenny County Council to provide engineering services for the extension of the Kilkenny northern ring road. The 1km extension commences at the N77 (Castlecomer Road) and links to the R693 (Freshford Road). The road will cross the River Nore and 800m of floodplain to the east of the river. Accordingly a key consideration in the design and part of the Environmental Impact Assessment (EIA) was a flood impact assessment of the River Nore.

A full topographical survey of 7km of the river was commissioned by CSEA in order to generate 60 No. detailed cross-sections of the river and associated flood plain. River flows were monitored with 4 No. electronic gauges and 4 No. staff gauges over a period of two and a half years. Using this data steady state and unsteady HEC-RAS models were developed for the river and its floodplain. These models were then utilised to analyse the various bridge options under consideration.

The final river crossing design which incorporates a bridging of the river and an embankment with multiple large culverts which has negligible impact on the flood water levels on the river and associated flood plain.

CSEA are providing full engineering consultancy services including, constraints study and route selection, preliminary design, public consultation, tender of site investigation works, procurement and management of specialists, Environmental Impact Assessment and submission of the Environmental Impact Statement, and land acquisition by Compulsory Purchase Order. The scheme is currently in the statutory planning process.