Lecture 23

Lecture 23 - The Aswan High Dam was completed in 1970 and...

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The Aswan High Dam was completed in 1970 and is one of the largest earthen embankment dams in the world. It is 364 feet (111 m) tall, 12 565 feet (3830 m) long and nearly 3281 feet (1000 m) wide. When it was built the new reservoir quired relocation of nearly 100 000 required relocation of nearly 100 000 residents and some archaeological sites. Although the reservoir has benefited Egypt by providing power and controlling floods, it has also had detrimental effects on the Nile system. Before the dam, an estimated 110 million tons of silt was deposited by the annual flood of the Nile, Water Resources ngineering py , enriching agricultural lands and maintaining the land of the Nile delta. Now this sediment is trapped behind the dam, quiring artificial fertilization of Engineering - Lecture 23 requiring artificial fertilization of agricultural lands and leading to erosion and saltwater intrusion where the Nile river meets the Mediterranean Sea. 1 http://earth.jsc.nasa.gov/sseop/EFS/lores. pl?PHOTO=STS102-303-17 Prepared by T. Wagener & P. Reed Penn State University
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am Problems Dam Problems A NASA TERRA satellite photograph adapted from Gellis et al. [2005] showing e high suspended ediment the high suspended-sediment concentrations within the Chesapeake Bay Watershed caused by Hurricane Ivan on 21 September 2004. The turbid waters of the Susquehanna recorded a suspended- sediment concentration of 3685 mg/L at Conowingo dam, Maryland [Gellis et al., 005] 2005]. 2
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am Problems Dam Problems Release of water from the Conowingo dam on the Susquehanna River in Maryland on 1 September 2004 after Hurricane Ivan 21 September 2004 after Hurricane Ivan on 17–18 September 2004. The discharge is 384,000 cubic feet per second. 3
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ontent Content ata Analysis 1. Data Analysis 2. Probability Concepts 3. Commonly Used Probability Distributions 4. Hydrologic Design for Water Excess Management 5. Hydrologic Frequency Analysis 4
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Hydrologic Design is the process of assessing the impact of hydrologic events on a water resource system and choosing values for the key variables of the system so that it will perform adequately (Chow et al., 5 pq y (, 1988).
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ydrologic Design Scale Hydrologic Design Scale the range in magnitude of the design is the range in magnitude of the design variable (for example the design ischarge) within which a value must be discharge) within which a value must be selected to determine the inflow to the ystem ays 2005) system (Mays, 2005).
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This note was uploaded on 04/11/2008 for the course C E 361 taught by Professor Reed,patrickmichwalters,geoffrey during the Spring '07 term at Penn State.

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Lecture 23 - The Aswan High Dam was completed in 1970 and...

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