Question to the Department for Transport:

To ask the Secretary of State for Transport, what assessment he has made of the hydrological effect of the construction of the green tunnel at Wendover on the potential risk of flooding in Aylesbury.

The Environmental Statement assessed the impact of the scheme on Water Resources (Volume 5 WR-002-010) in the Wendover area and specifically the impact of the green tunnel construction on water receptors.

https://webarchive.nationalarchives.gov.uk/20140613022805/http://assets.dft.gov.uk/hs2-environmental-statement/volume-5/water/vol5_CFA10_Water_resources_and_flood_risk_ass_Water_resources_assessment_WR-002-010.pdf

HS2 Ltd advises that the scheme is now entering the detailed design phase. My officials will respond to you shortly with further details on this matter.