Waterways
The city’s waterways have suffered a significant amount of degradation and damage over time. The drainage of the city’s natural groundwater springs, combined with increasing urban development, has left many of the waterways in poor condition. At the University of Canterbury, three waterways run through the campus. In addition to increased pollution and sediment, these streams are also being drained to supplement artificial inputs, such as car park runoff and building discharges.
To help address the challenges posed by increasing urbanization and land development in Christchurch, the city adopted several codes of practice. These documents set down the design requirements of developments and contain sections on stormwater management. They also provide guidance on how to apply the principles to local circumstances. In addition to the guidelines in the guidelines, the city also adopted six values to guide water management in the city. These values include ecology, heritage, and landscape.
Waterways for drainage Christchurch‘s landscape are particularly important because they provide habitat for a number of native species. Streamside plantings help prevent erosion and create a canopy of shade over waterways. This helps cool the water, preserve oxygen for fish, and slow the growth of bacteria. There are also several special native species found in the city’s waterways. The lamprey eel spawns in a drainage ditch near Marshland, and freshwater mussels can be found in Cashmere Stream.
Trench drains
There are various types of drainage systems available in Christchurch, and trench drains are among them. Trench drains are typically constructed of concrete, fiberglass, structural plastic, or steel. They are available in a variety of decorative finishes and can be precast in a factory, making the installation process quicker.
There are several different types of trench drains, each with a specific purpose. These types of drainage systems include gravity, pressure, and vacuum systems. The gravity system consists of private sewer laterals that connect to gravity wastewater mains, which carry the water to treatment facilities. The pressure and vacuum systems are more costly to operate and require large quantities of water for maintenance.
Trench drains can be made of a variety of materials, including polymer concrete, cast iron, and fiberglass. They are durable, and can be installed quickly. These systems are also suited for use in areas with high traffic. They are an excellent choice for driveways, outdoor swimming pools, and multi-level parking garages.
Earthenware pipes
Earthenware pipes are used in the construction of drainage systems, including stormwater pipes. These pipes are made from clay and are often more durable than conventional steel or copper. They are also resistant to high temperatures and aggressive environments. They also meet international standards. In addition, they have a smooth wall surface with low friction resistance.
Earthenware pipes are commonly used for drainage systems in homes in Christchurch. However, these pipes are prone to damage during earthquakes. If your sewer is damaged, you may need to have it repaired by a plumber or install a drainage pump. If the earthquake damage to your sewer is too extensive, you could end up living with knee-deep sewers for the rest of your life.
Stormwater system
The city of Christchurch has an extensive stormwater system that is constantly being improved and maintained. The system includes open drains, pipes, stopbanks, and detention basins. One example is the Woolston barrier, which prevents water from entering the Heathcote River. The drainage system is managed by the Christchurch City Council, which is responsible for stormwater management in the city.
The City Council has also published an updated Waterways Wetlands and Design Guide, which clarifies the Council’s preference for stormwater treatment. The document also includes updated calculations for first flush volumes. In addition, the South-West Christchurch Area Plan contains a stormwater management blueprint and six-values approach, which considers growth management and environmental considerations in the process.
In recent years, snowmelt has put pressure on the stormwater infrastructure. Broken stormwater drains and sunken land have led to flooding. However, yesterday’s snowmelt has made this flooding unlikely to be as bad as it has been post-quake. As a result, the City Council’s stormwater system will be tested for its efficiency.