Post by lordseafood on Oct 26, 2006 12:00:58 GMT 10
Aim: The aim of this report is to inform you (the public) about your resource of water, which in this case is the Darwin River Dam. This report will include all relevent data and presented in a way that the average user will understand.
Scope: This report will be giving information on the input (rainfall), output (usage) and any other information relevent. It will include scales maps of the dam and surrounding areas aswell as predicted results from theoretical situations.
Background: For many years Darwin's main water supply came from Manton Dam, about 65kms away from the city. As Dawin's population increased they needed to provide a second major source of supply. The Darwin River Dam was then constructed in 1972 and today provides 90% of Darwin's water supply. the earth and rock fill dam, at Darwin River, with a capacity of 265,000 ML was designed to provide Darwin's water supply, with supplementation from Manton Dam and the McMinns bores. Most of the material used in the dam was obtained from quarry areas which are now under water.
The intake tower is designed so that water can be taken from various levels. The water flows by gravity to the pumping station in a 1525mm pipeline.
Over the last 30 years, the design of large dams has changed to take maximum rainfall events into account. In December 2001, the Power and Water Corporation widened the spillway of Darwin River Dam to 265m, to allow larger floods to pass through the reservoir, without affecting the safety of the dam. This decision was made to accommodate the possibility of a 1 in 10,000-year flood.
The spillway for the dam is cut through rock adjacent to the wall. It has a design capacity of 2080 cubic metres per second.
A chlorination station was added to the pump station in 1992 to treat the incoming supply to McMinns.
Scope: This report will be giving information on the input (rainfall), output (usage) and any other information relevent. It will include scales maps of the dam and surrounding areas aswell as predicted results from theoretical situations.
Background: For many years Darwin's main water supply came from Manton Dam, about 65kms away from the city. As Dawin's population increased they needed to provide a second major source of supply. The Darwin River Dam was then constructed in 1972 and today provides 90% of Darwin's water supply. the earth and rock fill dam, at Darwin River, with a capacity of 265,000 ML was designed to provide Darwin's water supply, with supplementation from Manton Dam and the McMinns bores. Most of the material used in the dam was obtained from quarry areas which are now under water.
The intake tower is designed so that water can be taken from various levels. The water flows by gravity to the pumping station in a 1525mm pipeline.
Over the last 30 years, the design of large dams has changed to take maximum rainfall events into account. In December 2001, the Power and Water Corporation widened the spillway of Darwin River Dam to 265m, to allow larger floods to pass through the reservoir, without affecting the safety of the dam. This decision was made to accommodate the possibility of a 1 in 10,000-year flood.
The spillway for the dam is cut through rock adjacent to the wall. It has a design capacity of 2080 cubic metres per second.
A chlorination station was added to the pump station in 1992 to treat the incoming supply to McMinns.
