31) Is the below statement CORRECT or INCORRECT? “The assessment of the irrigation demand of crops is essentially based on the assessment of transpiration. Since the use of water in Cyprus, as in many other countries, is the largest portion of the total water demand, the importance of accurate estimate of perspiration becomes apparent in water […]
Simple Questions Q31-Q40 – Water Resources Engineering Exam Read More »
(21) The population of a city is 10,000 people. What is the approximate annual demand for potable water? 3000 MCM 50 MCM 0,7 MCM 60 MCM (22) Which of the following average annual rainfall values are reasonable for the island of Crete? 55 cm (SD=40) 56 cm (SD=15) 20 cm (SD=5) 130 cm (SD=60) (23) Approximately, how much
Simple Questions Q21-Q30 – Water Resources Engineering Exam Read More »
(11) Which of the following slopes is a reasonable slope for an earth dam slope: 1:3 1:1 1:1,5 1:5 (12) Which of the following is a type of cobblestone dam? Buttress dam RCC Earth dam Gravity dam (13) Rigid dams are constructed using different types of concrete. Which of the following types of dams are classified as rigid
Simple Questions Q11-Q20 – Water Resources Engineering Exam Read More »
Size of the drainage basin ≈ 78 km2 Aquifier size ≈ 40 km2 Porosity ≈ 20 % Intake 1997 ≈ 7,6 MCM Low area altitude and small hydraulic gradient in the aquifer Natural Discharge to the sea (Δυτικά κόλπος Επισκοπής- Ανατολικά κόλπος Ακρωτηρίου) Question: There are problems with water quality at the Akrotiri aquifer. What
6.9. Akrotiri Aquifer Read More »
(1) The water cycle is essentially the continues transfer of water between: Earth and atmosphere Land, sea, and atmosphere Earth, sea, and the troposphere (2) Dams depending on their use are divided into the following types: Earth dams, Concrete dams, RCC Water storage, Hydroelectric, Flood prevention Water intake, Irrigation reservoirs, Large dams Gravity dams, Buttress Dams,
Simple Questions Q01-Q10 – Water Resources Engineering Exam Read More »
Water distribution network is system with the follwing physical elements the water distribution pipes, the storage tanks, the flow and pressure control parts the various outflow components (hose connections, hydrants, etc The boundaries of the systems are the points of inflow and outflow of water. A simple schematic representation of the system is shown below
8.1. Modelling water distribution networks Read More »
The construction and solution of the system of equations that arise in the models (see link) is very easy with the use of appropriate software such as EPANET. This program has a graphical interface for network formatting and data entry. It has the ability to simulate a time-varying situation and present the effects on the
8.2. EPANET Software – Modeling water supply networks. Read More »
It is often required to model an existing network for1) the creation of a control system and optimization of the operation2) the design of an extension or upgrade3) the study of water quality and the investigation of ways to improve it. In order for the model to be used for the intended job, it must
8.3. Calibrating the model of a water distribution network Read More »
A water system usually has various water sources that serve the water and irrigation needs of several areas. Water can come from various resources (dams, boreholes, etc.) that are part of the system. For example, all dams and drilling systems along the southern pipeline are connected to the southern pipeline and water is distributed throughout
Water Resource Systems – Operation Optimization Read More »
1. Lower development cost Does not require storage to balance wet and dry seasons. Contrary to surface water the development of groundwater does not require the construction of reservoirs or large storage tanks. The aquifer itself is the reservoir. 2. Gradual development of the extraction works 3. Quick and simple access to the water resource
6.8. Advantages of groundwater vs surface water Read More »