Civil Engineering MCQJE Level Civil Engineering
The Symons rain gauge (non-recording) is read at:
HydrologyHydrologyEASY
Choose the correct answer
A
Every hour automatically
B
Once every 24 hours (standard reading at 8:30 AM IST) to give daily rainfall
C
Only during rain events
D
Monthly for average rainfall
Correct Answer
B. Once every 24 hours (standard reading at 8:30 AM IST) to give daily rainfall
Why is this the answer?
Symons gauge: standard non-recording rain gauge. Cylindrical vessel (12.7 cm diameter, raised 30 cm above ground) with funnel and measuring cylinder. Read every 24 hours (8:30 AM IST in India) to give daily rainfall in mm. Recording gauges (tipping bucket, float type) give rainfall intensity vs time (hyetograph).
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