Mahayag is a third-class municipality in the province of Zamboanga del Sur. It became a municipality on the 10th of May, 1960 when President Carlos P. Garcia issued Executive Order No. 393. The Christian settlers decided to name the place “Mahayag” from “Boyed Mahayag,” which is Subano for forested area. The municipality is situated at the north-central part of the Zamboanga Peninsula. It is positioned at 8°09‟7.0”N and 123°25‟39.6”E. The Municipal Hall is at 8°07‟50.7”N and 123°26‟9.6”. The boundaries of Mahayag include the municipalities of Molave and Sergio Osmena, Sr. from the north, the municipality of Dumingag from the west, Molave from the east, and the municipality of Ramon Magsaysay from the south, and the municipality of Sominot in the southwest. The center of the local government as well as the commercial hub can be found 50 kilometers northeast of Pagadian City. At present, it has 29 barangays, one of which is Barangay Guripan.
Barangay Guripan is located at geographical coordinates N08°09‟51.7‟‟ E 123°26‟06.0‟‟, it is being bounded on the north by barangay Paraiso, on the south by barangay Upper Salug Daku, on the east by barangay Delusom and on the west by barangay Kaangayan. Barangay Guripan is partly flat and mostly strongly sloping or mountainous, and has a total land area of 787.67 hectares. This Barangay has six (6) puroks each headed by the purok president. It has one distinct type of soil namely Lacastillana-Luisiana-Jasaan complex, making the land suitable for different types of crops like rice, corn, coconut, and banana. There are rivers and creeks which traverse through the barangay; these includes the Salug river at puroks 4 and 5; and a creek which traverse puroks 2, 3, and 5.
As part of the western Mindanao archipelago, the climate in the municipality of Mahayag is distinctly composed of wet and dry seasons. The dry season spans from October to May and is followed by succeeding wet months. The reason for the long dry season is Mt. Malindang, which is where the municipality is settled on its southwestern base, thereby sheltering it from the northeast monsoon.
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