Given the following data / information, determine the elevation of the weir crest at the river (8 marks):

• Ground level at head of scheme = 2000 m amsl;
• Operation head = 0.50 m
• Canal length to head works = 5.0 km
• Slope of the canal = 0.5%
• Head loss across structures = 1.50m
• Head loss at intake = 0.10m

If the weir height is 1.0m, what is the river bed level at the head works?

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