Watching the Manawatū at Opiki, five minutes at a time
The frame I pulled at 01:10 GMT on 2026-11-01, early afternoon in the Manawatū, has two cars on a long straight of State Highway 56, a gravel stopbank track running beside the seal, paddocks on both sides, and the Tararua foothills gone blue in the haze at the back of it. That is the Opiki Floodway camera, and for most of the year that flat green view is the whole point of it.
It refreshes every five minutes. I measured that rather than take it on trust: the source image at horizons.govt.nz carried a Last-Modified of 01:10:40 GMT, then 01:15:41, then 01:20:41 on 2026-11-01, which is five minutes and a second of clock drift, three times running.
What the camera is looking at
Opiki sits on the lower Manawatū, where the river leaves the gorge country and spreads out across farmland on its way to the coast. The land here is only there to farm because the river is held off it, and the road across the flood plain is the first thing to go under when the river comes up. A camera pointed down that road is a flood gauge you can read at a glance from anywhere.
Horizons Regional Council runs it, along with 46 others on its webcam page, and Opiki Floodway is on the council's own priority list, the sites where "any faults or image issues are prioritised and fixed as soon as possible". That is a useful thing to know about a camera. It means somebody is paid to care when the picture goes dark, which is not true of most of the webcams on the internet.
The gates 13 kilometres downstream
The camera worth opening in a second tab is Moutoa Floodgates, 13 km away by the coordinates on both pages. The frame is a row of concrete drum gates stepping away from the lens with depth scales painted down their faces in metres, a timber staff gauge standing bright orange against the grey, and a service road along the top of the stopbank behind. A traffic cone lies on its side in the gravel in today's picture, which is the kind of detail that tells you a camera is real.
Those gates are the release valve for everything upstream of Opiki. When Horizons opened them at 2.05am on 2026-04-22, the council described the job plainly: the gates "divert water down a spillway which acts as a shortcut to the sea", and the diversion "has no impact on water levels upstream". So the two cameras answer different questions on the same day. Opiki tells you whether the water is onto the flood plain. Moutoa tells you whether anyone has done anything about it yet.
Between those two there is no public camera on the river itself, so the 13 km in the middle is a guess from either end.
Upstream at Palmerston North, and out at the bar
Manawatū at Teachers College sits 21.7 km upstream in Palmerston North and is the prettiest of the set on a calm day: a wide bend with rock armour down the near bank, a mown path along the top of the stopbank, a long shingle bar on the inside of the far curve, willows and a low bluff behind it. Today that bar is dry and pale. It is also the camera that shows you the river rising before Opiki does, because the water passes it first.
Downstream, Manawatū at Foxton Bar is where the river finally gets out, 14.5 km from Opiki. The view is from up in the marram grass on the dune: a bank of driftwood stacked along the high tide line, lines of surf coming in grey-green, and a horizon that today was pure haze. It is a salt-blasted lens pointed at the Tasman, and it looks it.
The beaches on either side
The coast here is flat, driveable and close, and three cameras cover it. Himatangi Beach is a split two-pane frame, 14.8 km from Opiki: the left half watches the sand ramp where vehicles come down off the dune, with a stream cutting across the track and a couple walking their way down it, and the right half looks up the beach past driftwood and a white four-wheel-drive parked on the sand. People drive on this beach, and you can watch them do it.
Waitārere Beach is 19.1 km south and comes from a surf forecasting network rather than the council, and Foxton Beach at the surf club covers the dune end of the township, 14.6 km out. Counted on 2026-11-01, there are 16 live cameras within 30 km of the Opiki camera and 47 within 60 km, which is a lot of coverage for a part of the country most people only drive through. They are all on the New Zealand page.
When it is worth looking
Today at Opiki the sun rises at 06:07 and sets at 19:57 local, with civil twilight from 05:38 to 20:27, by the US Naval Observatory's table for the camera's coordinates. That is 830 minutes of daylight on a camera that puts up a frame every five minutes, so 166 daylight frames, and from the UK or Europe the useful ones land overnight. New Zealand morning is European evening.
The honest answer about the best time, though, is that these cameras earn their keep in bad weather rather than good. A wet night in the Tararua ranges is when the Opiki straight and the Moutoa gates stop being farmland and start being news, and five minutes between frames is fast enough to watch it happen.
Every camera page here carries its own run of recent checks, so you can see when we last got a frame out of a feed before you rely on it. The thing I have not worked out is the clocks. Lining each frame's burnt-in clock against the Last-Modified time of the same fetch on 2026-11-01, Moutoa and Teachers College sit on New Zealand daylight time, whilst Opiki and Foxton Bar read about an hour behind it, and I do not know yet whether that is two cameras that slept through the daylight saving change on 27 September or something in the way those frames get stamped. I would rather find out than guess.