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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 Guajataca at Lares Water Level

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

About Rio Guajataca at Lares

Rio Guajataca - A vital waterway in Puerto Rico's tropical landscape.

The Rio Guajataca winds through the lush landscape of Lares, Puerto Rico, serving as a crucial river in the Cibuco-Guajataca watershed. This area experiences a unique hydrological cycle driven by tropical rainfall, which can lead to rapid increases in water levels, particularly during hurricanes and tropical storms. The steep short basins in this region can respond dramatically to rainfall, highlighting the importance of rivers like the Guajataca in managing the hydrological balance.

The watershed context

Draining approximately 3.2 square miles upstream, the Rio Guajataca plays a significant role in the Cibuco-Guajataca watershed. This watershed encompasses a network of bodies of water, including several nearby canals and lakes, such as Canal de Aguadilla and Lago Guerrero. The Rio Guajataca not only contributes to the regional aquatic ecosystem but also supports local agriculture and activities reliant on its waters.

In the context of Puerto Rico's hydrology, rainfall is abundant year-round, but extremes can occur swiftly with storm events. The potential for flash floods due to intense rainfall elevates the importance of monitoring river levels.

Why the data matters here

Current data from the U.S. Geological Survey (USGS) provides essential real-time information on the Rio Guajataca, enabling residents, farmers, and local authorities to stay informed about river conditions. By comparing today's water level against the median for this calendar day over the station's 37-year record, users gain critical insights into current conditions. This comparative approach is essential, as it helps to contextualize changes in water levels and enhances preparedness for potential flooding or drought. Understanding these patterns informs better decision-making in response to the dynamic and sometimes volatile nature of tropical island hydrology.

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