Section 4: Soil and Water Conservation Engineering
Precipitation Analysis & Rain Gauges
Subtopic: Optimum number of rain gauges
Question Statement:
A 'Double Mass Curve' analysis of precipitation records is performed primarily to:
Options:
(A) Test and adjust for the inconsistency and non-homogeneity of rainfall records at a station
(B) Compute the peak flood discharge of a river
(C) Determine soil infiltration capacity
(D) Calculate evaporation from reservoir surfaces
Answer Key:
A
Step-by-Step Solution & Explanation
Double mass curves plot cumulative annual precipitation of a test station against the cumulative mean of surrounding index stations to detect and correct changes in gauge exposure or location.