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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 de la Plata at Highway 2 near Toa Alta Water Level

Live river level, flow, historical records and forecast for Rio de la Plata at Highway 2 near Toa Alta in PR, United States, built from official government gauge data.

About Rio de la Plata at Highway 2 near Toa Alta

Rio de la Plata - A vibrant waterway in Eastern Puerto Rico.

The Rio de la Plata at Highway 2 near Toa Alta is an essential artery within the vibrant Eastern Puerto Rico landscape. With a diverse upstream catchment area, this river plays a significant role in the hydrology of the region, particularly in the context of its rainfall-driven ecosystem.

The watershed context

Draining roughly 208 square miles above the station, the Rio de la Plata supports the unique environment of Eastern Puerto Rico. This region experiences a distinct rainfall-driven hydrology, marked by the potential for flash floods that can develop rapidly. Particularly during periods of intense rainfall associated with hurricanes and tropical waves, the water levels in the Rio de la Plata can fluctuate dramatically, underscoring the challenges and beauty of the area's climate.

The watershed is also home to several significant water bodies, including Lago Carite and Quebrada Santa Catalina, providing a network of waterways that contribute to the ecological richness of the area. The interplay between these waters and the Rio de la Plata is crucial for both the local wildlife and the communities that rely on these water sources.

Why the data matters here

Understanding the current readings of the Rio de la Plata is essential for flood monitoring and water resource management, particularly given the historical data published by the U.S. Geological Survey (USGS). The ongoing measurement includes discharge data, which can provide insights into how the river is responding to environmental changes and rainfall events.

Today’s reading notably reflects conditions in comparison to the median for this calendar day over the past 50 years. This comparison is invaluable for gauging the river's health and for preparing for any immediate flood risks, transcending the raw measurement of elevation alone. With the typical volatility of this tropical island ecosystem, such statistical context is crucial in understanding and responding to the dynamic nature of the Rio de la Plata.

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