Dam Technically, the dam is the wall that holds the water in and the reservoir is the water. Commonly, though, the words are interchanged. Sometimes there is not enough water in a river to supply our needs. Dog Droppings Over 90 tonnes of dog droppings collects on Melbourne's roads, nature strips and parks each day. Much of it ends up in stormwater.
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When it rains, sediment and rubbish from roads and building sites is washed into the drains. The maintenance program removes this material which can block the drains and cause flooding and ensures that drains function properly. Effluent Effluent is treated sewage. Before building a dam, putting in a road, or doing any other major construction work, a number of reports investigate the project. They normally include engineers' reports, financial reports and scientific reports to evaluate the overall impact of the project.