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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.

Rio Gurabo at Gurabo Water Level

Live river level, flow, historical records and forecast for Rio Gurabo at Gurabo in PR, United States, built from official government gauge data.

About Rio Gurabo at Gurabo

Rio Gurabo - a vital waterway in Eastern Puerto Rico.

Rio Gurabo flows through the heart of Eastern Puerto Rico, characterized by its dynamic and responsive hydrology. Draining a catchment area of approximately 60.2 square miles, this river is crucial for local communities as it channels rainfall runoff efficiently through a steep and short basin, resulting in rapid response to weather events.

The watershed context

The Eastern Puerto Rico watershed encompasses a range of other waterways including Lago Carite, Quebrada Grande, and Rio Bairoa, all forming a network that sustains the region's ecology and hydrology. The area experiences frequent rainfall events, which can lead to flash flooding, especially during hurricane season and tropical waves. This hydrological behavior means that local residents must remain vigilant of changing water levels, particularly during heavy rain episodes.

Why the data matters here

Today's readings from the USGS gauge at Rio Gurabo provide critical information about the river's status and flood risk. By comparing current water levels to the median for this date across a historical record of more than 50 years, stakeholders can assess the significance of today's data in context. This comparison is vital because it highlights variations in river behavior over time, helping inform flood preparedness, resource management, and the ecological health of the region. Understanding these dynamics is essential for anglers, farmers, and community members who rely on the Rio Gurabo for both livelihoods and recreation.

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