Surface Water Management Plan - Hampshire County Council

to provide water storage within the car park, reducing the impact on thesurface water system. This site will require additional investigation todetermine who is responsible for the drainage in this area.The River Hamble is the source of much of the potential flood risk in the areaand is identified by the EA as the ‘Hamble Estuary’ Flood Warning area.In addition to the River Hamble, the Hungerford Stream, which is also a mainriver, starts in the Lowford area and flows south to meet the Hamble at thesouthern edge of the parish at the Portsmouth / Southampton railway line. TheHungerford Stream is highlighted as Flood Zone 3 and is also shown to havea potential to surface water flooding. This is likely to be due to the interactionof the stream and any surface water drainage out falling in that area.Overall, Bursledon is considered to be at a relatively low risk of floodingalthough care must be taken when looking at future developments or drainageworks in the vicinity of the watercourses in order to avoid flooding as a resultof rising river levels.The recommendations for Bursledon are: Hampshire County Council as LLFA should lead the investigationinto Long Lane drainage issues to determine responsibility. The Planning Authority should ensure that future developments takeinto account potential flood risk and do not increase runoff rateswithin these areas7.2.5. Chandlers FordAt the most north westerly point of Eastleigh borough, Chandlers Ford is aheavily urbanised parish bordered by the adjoining boroughs and the M3. TheEastleigh to Romsey railway line runs through the centre of the parish.This parish has a number of the Monks Brook tributaries running through itsnorthern section forming the main Monks Brook River adjacent to the railwaystation which then runs south through Eastleigh town and into SouthamptonCity.There have been a number of flooding incidents within the parish of ChandlersFord however, works have been undertaken on a number of them includingLeigh Road, Cambridge Drive and Ford Avenue. Works have also beencarried out on Hocombe Road which, although having reduced the risk offlooding, is dependent on a suitable maintenance regime being in place.Flooding is still a risk in Gordon Road, Common Road and Nickson Closewhere the watercourse has been known to overtop the culvert and Pine Roadwhere debris is an issue, blocking the gullies. All of these areas are within theMonks Brook catchment and should be considered for further investigationand potential drainage improvements.17