Effects Of Urbanisation On The Hydrology Of A Catchment

Think about the following statement: “Only communities located downstream in a watershed need to be concerned about how the water resources are managed in the watershed.” In my opinion, I strongly disagree with this statement. This essay will explain why even communities upstream a watershed should be concerned due to acid rain, and the risk of contaminated drinking water.

It has long been known that plants act as a natural filter of water, removing all the properties that would harm the creatures that ingest it. A key issue facing developers today is an expanding population. With expanding urban sprawl vastly affecting the green space urban development, strategies continue to focus on removing the encroachment of land as a development strategy and going ‘up’. This essay will focus on the eutrophication of waterways within Australia and in

The effects of urban runoff are immensely damaging to the Puget Sound. The list of substances and chemicals that can cause damage is extensive. The effects of urban runoff are even more daunting than the causes. The effects include an increase in temperatures, algae blooms, lowered oxygen levels, injured marine life,

A catchment is an area where water is collected by the natural landscape. In a catchment, rain will eventually flow to a dam, creek, river, lake or ocean, evaporate, be used by vegetation and animals or seep into the groundwater system.

Associated activities may include installing drainage systems, grading slopes, ditching for storm drainages, and conduits for service utilities. The disturbance of natural patterns of runoff and rainwater infiltration through modified drainage can lead to the concentration of water flow at sites that previously only took direct rainwater infiltration; this can result in rapid forming cover-subsidence sinkholes (Waltham et al, 2005, p. 159). The many impervious surfaces used in modified drainage activities also impedes groundwater recharge, which can consequently lower the water

Most of the catchments depicted in Figure 1 where fully urbanised which caused surfaces in the catchment to be impervious; that is very little runoff would infiltrate into the ground

This report examines the North Eastern Management Victorian Catchment. In particular the area in which is being maintained by the North East Victorian Management Authority. The bio geographical region will be examined and a complex investigation into some of the threats posed by Land use and increased demand for resources have had on such a Catchment area.

The physical BMP component of their capstone project had multiple elements. Prior to the project, rainwater runoff from Anttila’s house, garage, and neighbor’s house pooled in her driveway, which made the driveway somewhat unusable and even led to flooding problems in her basement. To address this issue, Anttila and her partner decided to replace their concrete driveway with permeable pavers to allow rain water to soak in between the bricks and into the ground. Although permeable pavers are one of the more pricey BMP options, they are highly

Catchment Condition - The overall condition of the Manly Dam catchment area is affected by a number of factors. A growing population and resultant urbanisation has led to excessive runoff rates across the region. This increase in

A catchment area is where water is collected by the natural landscape. This would mean that all rain and run-off waters flow to a river, creek, lake, dam or ocean. Hence, this makes water a carrier of many contaminants that can cause diseases.

Human-environmental interaction contributes to processes that affect fluvial environments. Indeed, impervious surfaces are ubiquitous in urban areas; these anthropogenic surfaces reroute runoff (among other things), which can ultimately impact the morphology, water quality, vegetation, and floodplain soils of a local watershed if it is near an urban area. Similar to the above example, because of the complexities associated with

Beginning in the late 1990’s the city realized the importance of stormwater management and initiated the necessary steps to identify and minimalize the adverse effects of inadequate drainage infrastructure. Although the city had adopted stormwater regulations for new development, older developments and roadways in the city were not regulated prior to 1984 and many of those drainage systems

As the storm subsides and the sun peeks through the clouds, murky water flows through the once beautiful scene of the San Marcos River, destroying property, displacing families, and disrupting businesses. Recent flooding in San Marcos has had a profound effect on the city and its surrounding area. The City of San Marcos must consider a more sustainable approach to development in order to prevent future flooding.

By the early 1900s there were scattered houses and farms. From the 1940-1970s rapid urban development led to high runoff and siltation - the lagoon declined in depth, water quality, seagrasses, fish life and water-sports. Several major storms and floods also occurred. Allowing urban development to replace the bushland surrounding the lagoon causes erosion in catchment zones by replacing the bushland with hard surfaces.

2- There are many ways and methods to increase safe water supplies. One of them is constructing more water catchment in Seattle houses due to the rain. Why? Because is a system of gutters and downspouts directs the rainwater collected by the roof to the storage cistern. It is very easy and fast way to get water from rain from cities like Seattle.