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Christchurch City Council has agreed to sell 20 riverside properties that it bought because they were at frequent risk of flooding from the Heathcote River.

A 10-year $40 million project to prevent major flooding from the Waimakariri River will be completed this month, under budget and ahead of schedule.

Forecasters are predicting a hot few days ahead for Christchurch but the second half of the week could bring some tidal flooding to parts of the city.

Flood protection work in Christchurch’s southwest has lessened the risk of properties near the Heathcote flooding and created a new wetland area and walking tracks for the public to enjoy.

A new wetland featuring thousands of native trees and plants will boost biodiversity in Mairehau.

More than 100,000 native trees will be planted in the city’s south-west as part of a network of new wetland areas in the upper catchment of the Ōpāwaho/Heathcote River.

Invasive weeds clogging the Heathcote River and taking over its banks are being targeted in a spring-time weed spraying programme.

A wetland area built by Christchurch City Council last year is already teeming with fish life including a rare 50-year-old longfin eel.

A more environmentally-friendly approach to managing how and when stormwater can be discharged into Christchurch and Banks Peninsula’s waterways has been finalised.

A $19 million land drainage scheme has reduced the flood risk for dozens of properties in the Woolston and Linwood area and created lasting legacies for the community.