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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.

Hanalei Riv at Highway 56 Bridge near Hanalei, Kauai Water Level

Live river level, flow, historical records and forecast for Hanalei Riv at Highway 56 Bridge near Hanalei, Kauai in HI, United States, built from official government gauge data.

About Hanalei Riv at Highway 56 Bridge near Hanalei, Kauai

Hanalei River - A vital waterway of Kauai.

The Hanalei River flows near the community of Hanalei on the north shore of Kauai, Hawaii. This river plays a crucial role in the local ecosystem and contributes to the unique hydrology of the region. The catchment area above the station, measuring approximately 21 square miles, captures rainfall that often leads to rapid changes in water levels, a characteristic of tropical island rivers influenced by local weather patterns.

The watershed context

The Hanalei River is situated within the Kauai watershed, an area known for its lush landscapes and diverse ecosystems. Rainfall-driven flash floods are common here, with the river's levels rising quickly during heavy rains or storms. The hydrology of Kauai is shaped significantly by trade winds and occasional Kona storms, generating bursts of rainfall that can affect river flows abruptly. The absence of a snowmelt season means that the river's dynamics are primarily influenced by rainfall patterns.

Nearby, waterways such as the East Branch of the North Fork Wailua River and Hanapepe River contribute to the region's vibrant aquatic systems. These rivers share the landscape with streams and reservoirs, forming complex interactions that sustain both wildlife and human activities.

Why the data matters here

Understanding the current conditions of the Hanalei River is vital for monitoring potential flood risks and managing water resources effectively. The river is measured by the U.S. Geological Survey, providing vital information to residents, farmers, and emergency management teams.

As of today, the data indicates the river's current level compared to the historical median for this calendar day, based on seven years of records. This context is crucial for assessing the health of the river and anticipating any sudden changes that might occur due to rainfall. By referring to the median instead of just the raw elevation, stakeholders can gauge whether the current conditions are typical or if they suggest impending flooding.

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