The Department of Environment and Natural Resources (DENR) in the Davao region has started an investigation into the heavy siltation of Maputi River in Banaybanay town, Davao Oriental province. The DENR probe came after photos of the reddish or blood orange waters along the river circulated on social media on Friday. The DENR noted that a high amount of silt settled into Maputi River on Jan. 14 after heavy rains occurred for more than 12 hours, with an accumulated rainfall intensity of 111 millimeters from noon of Jan. 13 to 5 a.m. of Jan 14.

Lacorte, G., & Francisco, C. Q. (2022, January 17). Water in Davao Oriental river turns orange; DENR orders probe. Philippine Daily Inquirer, p. A7.