None
None
After the earthquake.
A photograph of a tree that has been cut down and sawn into pieces behind a fence on the Avon River bank beside Oxford Terrace.
A crack in the bank of the Avon River in Avonside. In the distance, a digger can be seen working on the road.
A photograph of a large sand volcano on a farm near River Road in Lincoln being spread out with multiple power-harrow passes.
A photograph of the collapsed PGC Building, taken from Oxford Terrace across the Avon River. In the foreground is the Edmonds Band Rotunda.
Photograph captioned by BeckerFraserPhotos, "Kerrs Reach of the Avon River by the rowing clubs. Notice the fissures beyond the rowing clubs".
Photograph captioned by BeckerFraserPhotos, "Large cracks in the footpath of Cambridge Terrace where the road is slumping towards the Avon River".
A photograph captioned by BeckerFraserPhotos, "A view looking south down Colombo Street from the Colombo Street bridge over the River Avon".
The land and houses close to the Avon River have been badly damaged. Many road and footpaths are covered in silt from liquefaction.
The land and houses close to the Avon River have been badly damaged. Many road and footpaths are covered in silt from liquefaction.
Damage in the car park at Kerrs Reach. A large crack crosses the car park where the land has slumped towards the river.
A document describing Downer's planned approach for neutralising the high pH of any potential bentonite or grout discharge into the Avon river.
A photograph of the collapsed PGC Building, taken from Oxford Terrace across the Avon River. In the foreground is the Edmonds Band Rotunda.
A photograph of a tractor on a farm near River Road in Lincoln, ready to drive a power harrow over a liquefaction blister.
Damage to Cambridge Terrace, where the footpath has slumped towards the river. In the background is a pile of bricks and building rubble.
A photograph captioned by BeckerFraserPhotos, "Fissure on the banks of the River Avon near the site of the demolished Plunket House".
A house in Richmond being demolished. Part of the external walls have been removed. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. Part of an external wall has been removed. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. Part of an external wall has been removed. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. A worker removes fittings from the front door. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. A worker removes fittings from the front door. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. Part of the external walls have been removed. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. Part of the external walls have been removed. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. Workers drive a truck up to the house. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. A worker removes fittings from the front door. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. Part of the foundation has been broken up. The photographer comments, "The end of 393 River Rd".
A house in Richmond being demolished. Workers carry a sink bench and sink unit. The photographer comments, "The end of 393 River Rd".
For six weeks after the February 2011 Christchurch earthquake millions of litres of raw sewage - along with lots of liquefaction - poured into the Avon and Heathcote Rivers. A team of biologists quickly got to work to measure the impact of this catastrophe on life in the Heathcote River and as they tell Alison Ballance, they were surprised by what they recorded over the next few months.