2015-10-14
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1) Reservoirs are built for …
2) … must be controlled to provide water consumers with …
3) There are some types of the reservoirs: …
4) The main functions of the reservoirs are …
5) The most important physical characteristic is …
6) Capacity of the reservoirs must be determined from …
7) Useful storage may be subdivided into … and …
8) Leakage may occur if …
9) The relation between yield and capacity is …
10) Yield depends on …
11) Most water-storage reservoirs must have safe and …
Fill in the table according to the text.
| Main physical characteristics of a reservoir are … | …, … |
| Other physical characteristics include … | water-surface profile, … |
Answer the following questions.
1) Why are dams built in the river channel?
2) Do rivers carry a constant amount of water in natural conditions?
3) What do water consumers require?
4) What must be controlled?
5) What can effect the control of the river run-off?
6) What types of the reservoir do you know?
7) What are the major functions of the reservoir?
8) What must be determined from topographic surveys?
9) What are the useful and dead storages?
10) What may the useful storage be subdivided into?
11) When may leakage occur?
12) When is the cost of grouting great?
13) Must constructions along the banks of the reservoir be located above the water level?
14) What is the most important aspect of storage-reservoir design?
15) What is yield dependent upon?
Read the text again, make its plan and title it.
