In civil engineering terminology, the rainwater and rainwater run-off occurring when it rains is known as stormwater.
For engineers,managing the stormwater run-off is a very important matter. Water must not be allowed to pool on roads or pathways, and it must not be allowed to soak into the subsoil or foundations and footings around roads, or buildings.
Managing the stormwater usually consists of directing the water away from the a) roads, b) pathways, c) carparks, d) roofs of buildings, and e) semi-permeable grounds; and collecting in temporary storage areas called sumps, and possibly causing the stormwater to be piped to the ocean or estuarine system and released.
Depending upon what the nature of the surroundings areas are like, there may be a large number of sealed roads and footpaths, and other impermeable structures such as buildings covering the ground. Other areas may be semi-permeable; being largely grass, exposed soil, or gardens and bushland. In the semi-permeable areas, the stormwater may tend to seep away.
In our project, we are considering the north-western part of ECU’s Joondalup campus.
This area is managed by a system of two sumps, which capture the water from the north-western side of the campus. One sump is 1200mm higher than the other. The two sumps are connected by a 300mm diameter pipe.
You are to consider the ground which is higher than both the sumps, which includes, and is to the west of Kendrew Crescent. The areas that you should include is shown within the highlighted region on the map shown below. The rising ground continues only part the way to Grand Boulevard on the west, and part of the way to the carpark on the south-west; and part way up towards Teakle Court on the north.