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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.

Wainiha River near Hanalei, Kauai Water Level

Live river level, flow, historical records and forecast for Wainiha River near Hanalei, Kauai in HI, United States, built from official government gauge data.

About Wainiha River near Hanalei, Kauai

Wainiha River - a dynamic watercourse shaped by Kauai's tropical climate.

The Wainiha River flows near Hanalei on the lush island of Kauai, a vital waterway that showcases the unique hydrological patterns of Hawaii. Renowned for its rapid response to rainfall, this river is a testament to the island's tropical island hydrology, marked by the sudden and dramatic fluctuations in water levels that can occur due to rainfall-driven flash floods.

The watershed context

Draining an area of approximately 10.4 square miles, the Wainiha River is part of the Kauai watershed. Its neighbors include other important waterways, such as the Hanalei River and the East Branch of the North Fork Wailua River. These rivers together form a crucial network that supports the local ecosystem and provides essential resources for residents and visitors alike. The steep basins of Kauai make the river particularly susceptible to rapid changes in flow, influenced by trade winds and Kona storms that can lead to substantial rainfall in short periods.

Why the data matters here

Tracking the river's data is essential, especially with its historical record covering over 50 years. The data provided by the U.S. Geological Survey measures not only the river level but also any discharge, helping to gauge the potential for flash floods and informing flood watch strategies. When comparing today's reading against the median for this calendar day, we can assess how conditions are shifting over time. This comparison, rather than relying on raw elevation alone, allows for a more informed understanding of current river conditions relative to historical norms. The importance of such data cannot be overstated when it comes to public safety, agricultural management, and the overall health of the ecosystem in and around the Wainiha River.

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