On June 3, 2026, Mr. Nithat Phromphan, Director of the Regional Water Resources Office 4, assigned the Water Allocation Division to participate in the ceremony of offering royal tributes and laying floral wreaths, and the ceremony of lighting candles to offer blessings on the occasion of Her Majesty Queen Sutida Patcharasutha Pimollak's birthday, at the Kaen Mueang Meeting Room, Khon Kaen Provincial Hall. Mr. Khajornkiat Rakphanichmani, Governor of Khon Kaen Province, presided over the ceremony.