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Nibi Metrics

Real-time water levels, forecasts, and alerts for lakes and rivers across Canada and the US. Built on official government data.

Nibi Metrics turns raw gauge readings from official hydrometric networks into something a person standing on a dock can actually use: is the water high or low for today, which way is it moving, and how unusual is this? This page explains where every number on the platform comes from and what we do to it along the way.

Water Stories

The flood of record that was overtaken

For five years, spring 2019 was the mark every Lake Muskoka decision answered to. In April 2026 the lake went two centimeters higher - and the official books have not caught up yet.

Why the Assiniboine floods every spring

Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.

How snowpack becomes summer water

The science of snow water equivalent and why it drives the season ahead.

Reading a staff gauge like a hydrologist

What the numbers on the measuring stick actually tell you.

Flash Flood Alley: how Texas rivers rise in hours

Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.

What a "100-year flood" actually means

One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.

Heeia Stream at Haiku Valley near Kaneohe, Oahu Water Level

Live river level, flow, historical records and forecast for Heeia Stream at Haiku Valley near Kaneohe, Oahu in HI, United States, built from official government gauge data.

About Heeia Stream at Haiku Valley near Kaneohe, Oahu

Heeia Stream - a vital waterway of Oahu's lush landscape.

Heeia Stream flows through the serene Haiku Valley near Kaneohe, on the island of Oahu in Hawaii. The stream is an essential part of the local ecosystem, draining a relatively small catchment area while supporting a diverse array of wildlife and plant species that thrive in the tropical environment.

The watershed context

Draining roughly 1 square mile (around 2.6 square kilometers) above the station, Heeia Stream is shaped by the unique hydrology of the tropical island. This area experiences rainfall-driven flash floods due to the steep topography and quick runoff generated by sudden showers. The stream is interconnected with its peers, including other notable water bodies like Heeia Stream at Haiku Plantations Drive and Kahaluu Stream near Ahuimanu, contributing to the overall water dynamics of Oahu's hydrological landscape.

Why the data matters here

The data provided by the U.S. Geological Survey gives important insights into the flow of Heeia Stream at its gauge. Understanding the recorded measurements and comparing them to the median for this time of year helps monitor the current conditions and anticipate changes. Today's reading can offer essential information for residents, anglers, and land managers, guiding their decisions and enhancing safety during potential weather events.

The assessment of flow—and the variation from the median—is vital in understanding how Heeia Stream is responding to the region's rainfall patterns. Knowing that today's reading can be compared against 50 years of historical data allows for a clearer picture of how this waterway functions as part of Oahu's ecological framework.

How this page is built

Readings come from official government gauges and are rolled into daily records: the daily mean, high and low for every day on record. Each calendar day gets its own baseline from the full history, so the level you see is compared against what this specific date usually looks like rather than an annual average.

How Nibi Metrics works · Water stories