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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.

Canal de Juana Diaz at Piedra Aguzada near Juana Dia Water Level

Live river level, flow, historical records and forecast for Canal de Juana Diaz at Piedra Aguzada near Juana Dia in PR, United States, built from official government gauge data.

About Canal de Juana Diaz at Piedra Aguzada near Juana Dia

Canal de Juana Diaz - A vibrant waterway in Southern Puerto Rico.

The Canal de Juana Diaz at Piedra Aguzada is an integral part of the hydrological network in Southern Puerto Rico. Positioned in a region characterized by its tropical island climate, this canal benefits from significant rainfall throughout the year. Such a pattern leads to rapid fluctuations in water levels, especially during heavy rains associated with tropical waves and hurricanes.

The watershed context

The Canal de Juana Diaz acts as a key facilitator of water flow in the Southern Puerto Rico watershed, which features a variety of other canals and waterways such as the Aes Intake Canal at Canal de Patillas and the Canal de Guamani Oeste. While the exact drainage area for this specific monitoring station is not available, the significance of the canal within the broader watershed is clear. The area's hydrology is highly responsive, with flash floods being a common occurrence, prompting quick rises in water levels. The short, steep basins in this tropical environment can contribute to dramatic changes in flow conditions after rain events.

Why the data matters here

Understanding the water levels and flow trends at this location is crucial, especially for local communities who rely on the canal for various needs. The recorded data, monitored by the U.S. Geological Survey (USGS), provides essential insights into the area's hydrological behavior, particularly important during rainy seasons.

Today’s reading from the Canal de Juana Diaz at Piedra Aguzada offers a snapshot of current water conditions, compared against the median for this calendar day. This metric can reveal significant changes in the water system over time, as it contextualizes today's measurement within a historical framework extending over 22 years. Monitoring this data is vital for managing risks associated with high water events in the region, ultimately aiding in community safety and resource management.

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