Analysis of Rainfall Variability in the Province of Quirino


  • MAR HEISEN YANOS Isabela State University, Philippines



Double Mass Curve, Frequency Analysis, Rainfall, Rain Gauge, Temporal Variability, Thiessen


The temporal variability of rainfall in Quirino Province was analyzed through the use of rainfall data of seven (7) rain gauges within the neighboring provinces like Nueva Vizcaya and Aurora. The length of record analyzed from 1997 to 2016. In this study, rainfall frequency analysis and consistency of rainfall data from the different stations through the use of double mass curve analysis was performed and analyzed. The annual series was used to screen each station’s annual rainfall data while the province’s average Thiessen rainfall was screened using maximum period series process. It was found out that all the data of the seven (7) rainfall stations were consistent. To attain allowable error in estimation of 10%, 5% and 1% for the mean annual rainfall the number of rain gauge station needed in the province should be 18, 72 and 1799, respectively.



DOI: 10.56556/jescae.v1i2.20

How to Cite

YANOS, M. H. (2022). Analysis of Rainfall Variability in the Province of Quirino. Journal of Environmental Science and Economics, 1(2), 44–50.



Research Article