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DID Sarawak's own published king tide calendar for the rest of 2026 — which weeks the big tides fall in, the exact date, time and height of each one, and what that does and doesn't mean for a Sibu flood. Registered on 17 September but the code behind it never reached the live site until today; the page was returning a placeholder in the meantime.
The Rajang flood-level page named four king tide windows for 2026 and three of them were behind us. It now points at the town's new king tide page, which works the dates out for itself, and keeps the department's own caution that the published heights belong to Kuching and not to the gauge at the express terminal.
The 46 per cent of treated water that never reaches a customer is a 2024 figure, and the page now says so rather than reading as today's number. The Salim treatment plant's upgrade to 300 million litres a day was 68 per cent built in May 2026, with partial completion due at the end of this year and full capacity by the middle of 2027 — so the night-time cuts that come with the work have about another year left in them.
The page said Sibu is served by two councils and then listed one. Sibu Rural District Council — which covers Sibu Jaya, Bawang Assan, Pasai Siong and everything outside the municipal boundary — now has its number, address, email and office hours, with a note on how to tell which of the two covers your street. They share a building: SRDC on floors 17 and 18 of Wisma Sanyan, SMC on 19 to 24.
Measured rainfall from Kapit down to Sibu, division by division — the leading half of the flood mechanism the river gauges can only show after it has already arrived.
The page read Malaysia's national flood portal, which has been publishing a flat zero for almost every gauge in Sarawak — so rather than print a false level, the page had been saying the gauge was not reporting. It now reads DID Sarawak's own portal, which has had real readings all along. Our apologies: it shipped on 13 August and has been blank since.
The water that floods Sibu falls days earlier in Kapit, Baleh, Song and Kanowit. This page reads all nine gauges at once, in the order the water travels, and puts each reading against the alert levels the Drainage and Irrigation Department publishes for that exact gauge. The gauges from Kanowit down are marked tidal, because they rise and fall by more than two metres a day on their own — at those, the height matters and the direction does not.
The town page now opens with a drawing of the passenger express boats moored at the wharf, with a shipyard and a half-built hull on the far bank.
Our notes on how the town is serviced named the Sibu Water Board as the water company. It was merged with the Kuching Water Board and LAKU into Sarawak Water Sdn Bhd on 1 August 2025, with Sibu as its Central Region. We have corrected the research and every page that mentions water, and recorded where the company now publishes its interruption notices.
Chinese New Year, Chap Goh Meh, Cheng Beng, the Hungry Ghost Festival, Mid-Autumn, Gawai Dayak, the two Hari Rayas, Good Friday, Christmas, Sarawak Day and the anniversary of the 1901 Foochow landing — each with its next date worked out for you. Four different calendars decide when Sibu closes, and none of them lines up with the others from one year to the next.
Water, the council, floods, boats and air quality, with the right number for each. Sibu is covered by two councils and a separate rural water department, and none of their websites tells you which one covers where you live. It also notes that the Sibu Water Board was merged into Sarawak Water in August 2025 — the old 24-hour number still works.
The Drainage and Irrigation Department publishes Sarawak's big-tide dates a year ahead, and a flood here needs one of them as well as rain upriver. The new page says whether today falls inside a king tide run, when the next one starts, and what the almanac's height actually means once the department's own datum correction is applied — which is not the same zero as the gauge in town.
Tap your area if you have no water, and see whether your neighbours have reported the same. Sibu loses about 46% of the water it treats to mains that crack as the peat under the town settles, which is why a cut in one area says little about the next. The page carries Sarawak Water's 24-hour line, because reporting a fault to them is the thing that gets it fixed.
The hourly Air Pollutant Index reading for Sibu's own monitoring station, with the last 24 hours so you can see which way it is going. It says plainly where 200 sits — the level at which the National Haze Action Plan closes schools — and who actually announces a closure, which is the State Education Department and the district office, not the index.
The river's level at the Express Terminal, shown against the four levels DID Sarawak publishes for that exact gauge. It explains the thing that catches people out: Sibu floods when rain that fell days earlier in Kapit, Baleh, Song and Kanowit arrives at the same time as a king tide, so watching the weather here is not enough. It also says which areas the town-centre flood scheme leaves out.
Sibu now has its own pages: the Rajang's flood levels, the air quality reading the school-closure rule is based on, a board for reporting when the water is off, who to call at which of the town's two councils, and the dates of every community's festivals worked out ahead. Sarawak's third town on Town Tools, after Taiping and Alor Setar in the peninsula.