Concerns over Canterbury rivers after persistent rain

More people have been forced to evacuate in Canterbury overnight because of flooding and slips. Civil Defence says a few residents in the Waimakiriri district left their homes because of surface water damage. and in Christchurch, four households were evacuated in Lyttelton and Redcliffs because of slips. In Selwyn, high waters in the Selwyn River forced a number of precautionary evacuations overnight. It's the second evacuation near Selwyn River this month. Environment Canterbury rivers manager Leigh Griffiths spoke to Corin Dann.