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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.

Kaupuni Str at alt 374 ft near Waianae, Oahu Water Level

Live river level, flow, historical records and forecast for Kaupuni Str at alt 374 ft near Waianae, Oahu in HI, United States, built from official government gauge data.

About Kaupuni Str at alt 374 ft near Waianae, Oahu

Kaupuni Stream - A swift river in Oahu's rugged terrain.

Kaupuni Stream flows through the intricate landscape near Waianae, Oahu, where elevation and rainfall patterns shape its character. This river is part of the broader Oahu watershed, capturing the essence of Hawaii's unique tropical island hydrology. Rainfall-driven events can lead to sudden increases in water levels, a characteristic found in steep basins. These flash flood scenarios unfold rapidly, often influenced by trade winds and Kona storms.

Why the data matters here

Today's gauge reading from Kaupuni Stream is significant, particularly within the context of its historical data over the past three years. Monitoring water levels is critical not just for local ecology but also for safety in areas where river levels can rise dramatically within moments. The US Geological Survey (USGS), which operates this gauge, helps provide insights that can warn nearby residents and visitors about potential flooding, especially during storm events.

Understanding how Kaupuni Stream behaves during different times of the year can assist in anticipating such rapid changes. Today's reading is crucial as it offers a way to compare current conditions against the median for the calendar day; this historical context is essential for assessing the implications of rising water levels in this dynamic environment.

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