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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 Majada at la Plena Water Level

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

About Rio Majada at la Plena

Rio Majada - A lively tropical river in Southern Puerto Rico.

The Rio Majada at La Plena courses through a vibrant landscape, embodying the dynamic hydrology typical of tropical islands. With a drainage area of approximately 16.7 square miles, this river is part of the Southern Puerto Rico watershed, a region characterized by its steep topography and rainfall-driven flows. The river serves as a crucial part of the local ecosystem, responding rapidly to rainfall events and potential weather systems such as hurricanes and tropical waves.

The watershed context

Southern Puerto Rico is known for its swift and dramatic water events. The Rio Majada is embedded in this system, where rain can lead to flash floods in a matter of hours. The unique geography enables water to collect quickly, making this river responsive and important for managing local water resources. Nearby, other waterways such as the Aes Intake Canal and various segments of the Canal de Juana Diaz also reflect similar hydrological patterns, further illustrating the interconnected nature of this watershed.

Why the data matters here

Current hydrological data from the U.S. Geological Survey provides essential insights for residents and users of Rio Majada. Today's reading of the river's conditions is crucial, allowing locals to prepare for potential flooding and understand the rainfall's immediate impacts. By comparing today’s readings to the historical median for this day, users gain a clearer understanding of the river's behavior. This context is key in navigating the variability of tropical hydrology, and equips fisherfolk, farmers, and residents alike with the knowledge to manage their activities effectively and safely.

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