CHAPTER 1
2.0 Introduction
The uses of unit hydrographs for the development of hydraulic structures within a river catchment plays a vital role. For watersheds where there isn’t any readily available information on the rainfall and runoff patterns on the river watershed, the storm hydrographs cannot be derived. Therefore synthetic methods are employed.
2.1 Background of the study
The unit hydrograph is a concept which can be utilized for establishing peak discharges of a river flow from rainfall. The generation of unit hydrographs requires knowledge of the rainfall and runoff data which is used to develop storm hydrographs which are derived from established methods. The storm hydrographs are used to develop hydraulic structures such as dams, culverts and many others within the watershed area of the study. (Ayanshola et al., 2006, E.Todini, 2007)
2.2 Research Problem and Aims
The development of a unit hydrograph depends on the rainfall and runoff data available, unfortunately not all this data is readily available and a synthetic unit Hydrograph was developed and the determinati...
Case study: the flooding that occurred in Minden Hills in the spring of 2013, flooded the downtown core. The picturesque cottage town has the Gull River flowing through it. The river overflowed in April because of many reasons: a couple of days of rain, the third largest amount in over a century, but it also happened because the frost in the ground stopped the water from going into the Earth, the lakes and rivers being full from the spring thaw, and the rapid
...ric Science (2010). A summary of the hydrologic cycle. Retrieved from http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hyd/smry.rxml. University of Illinois at Urbana-Champaign.
In the binational area of El Paso, Texas and Ciudad Juarez flooding has become a way of life due to the scarcity of rain and desert climate. Fortunately, meteorologist, geologist and city planners are continuously working to improve city prior to a storm in order to mitigate any financial hardships during and after a flood. The city has to take in account past events in order to improve infrastructure. They also rely on meteorologist to study how the weather is reacting so they can anticipate the next system and how it will hit this region. The primary expert that contributes to this vital research are the Geologist, who have brought to light the cause and effects during drastic climate events. In this report, it will document infrastructure affects, stormwater management, Climate Whiplash and thoughts from the geologist on the desert-flood relationship.
Ubilla, Javier, Tarek Abdoun, Inthuorn Sasanakul, Michael Sharp, Scott Steedman, Wipawi Vanadit-Ellis, and Thomas Zimmie. "New Orleans Levee System Performance during Hurricane Katrina: London Avenue and Orleans Canal South." Geotechnical & Geoenvironmental Engineering (2008): n. pag. Academic Search Premier. Web. 12 Dec. 2013.
Storm Water Drainage: This is simply the water from rain, melted snow, etc. draining into
Moore, J. R., Bell, A. V., Jones, A. D., 2005. Forecasting for flood warning. C.R Geoscience 337, 203-217.
Richards, K.S., 1978. Simulation of flow geometry in a riffle–pool stream. Earth Surface Processes and Landforms 3, 345–354.
Storm waters are widely used in many different areas, even required in some. They are a vital tool that helps keep streams healthy. Storm water ponds are used to capture, control, and filter all kinds of runoff that could be from anything like parking lots to roof tops. The use of storm water ponds is essential to slow the flow of water down, filter out toxins, and improve the health of streams for aquatic life and for consumption purposes. All of that is in efforts to protect local streams.
...f the streams and drainage basins were found using the Calculate Geometry tool in ArcMap. This information gave us the minimum, maximum, average, and total stream lengths, along with the area of the drainage basins. Once this information was obtained it was used to calculate morphometric relationships (table 1). The sinuosity of the BRV was determined through a custom built tool in ArcMap that took the length of the stream over the length of the valley.
The basic design of the Greenfield Naturals Water Structuring Unit was inspired by implosion technology first developed by Viktor Schauberger based on his observations of water flowing in mountain streams. He realized that the flow dynamics of water followed a three dimensional vortex pattern – a pattern that occurs at every stage of the hydrologic cycle.
Because watersheds are specified by natural hydrology they represent the most logical basis for managing water resources. The resource becomes the center point and managers are able to gain a more complete understanding of overall conditions in an area
To help the university learn more about the stormwater benefits of green roofs, this report provides monitoring guidelines and information to support a uniform monitoring approach for green roofs on campus, with one site-specific case study. With uniform monitoring approaches, the effects of green roofs on stormwater runoff hydrology can be compared more accurately from site to site. These comparisons can then support ...
The Features and Processes of a River Along Its Profile Introduction ------------ Along the path of a river, from source to mouth, the river shows many different features and is affected by several different processes. These processes are going to be described and explained in the course of this essay and diagrams will be used to back-up and justify my ideas. A river can be simply divided into an upland or lowland river environment.
In this essay I aim to find out the ways in which they affect the
A Flood Hydrograph and the Factors That Affect its Form A flood hydrograph is a graph of two axis, 'discharge' and 'time'. Plotted on the graph is the amount of discharge over a period of time. By looking at a hydrograph, a lot of information and data can be gathered about the river, the precipitation, the surrounding area and vegetation etc. The gradient, height and length of a line can tell you a lot of this information. There are many different factors that can affect the appearance and shape of a hydrograph.