The Student Volunteer Army is considering bringing in high school pupils to help clear silt caused by liquefaction after an aftershock in Christchurch on Saturday.
Student Volunteer Army leader Sam Johnson says he is working with the City Council and Civil Defence to see if there is enough silt build-up to warrant remobilising the army.
Because university students are now studying fulltime, he says high school students might be asked to pitch in over the school holidays.
Mr Johnson says anyone who has more than five wheel barrow loads of silt on their property and cannot clear it themselves, should register with the council.
Civil Defence national controller John Hamilton said that the main impact of the aftershock will be to knock people's confidence.