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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 Jacaguas above Lago Guayabal Water Level

Live river level, flow, historical records and forecast for Rio Jacaguas above Lago Guayabal in PR, United States, built from official government gauge data.

About Rio Jacaguas above Lago Guayabal

Rio Jacaguas - a vital river in Southern Puerto Rico.

The Rio Jacaguas above Lago Guayabal plies through Southern Puerto Rico, channeling rainfall runoff from a catchment area of approximately 13.7 square miles. This river plays an essential role in the local hydrology, contributing to both the surrounding ecosystem and the agricultural practices that thrive in this tropical climate.

The watershed context

The Rio Jacaguas is part of the Southern Puerto Rico watershed, an area characterized by steep short basins that can respond rapidly to rainfall. The unique features of this region lead to quick rises in water levels, especially during tropical storms and hurricanes. It is significant to note that Southern Puerto Rico experiences a hydrological rhythm driven primarily by rainfall, with pronounced flash floods that can occur year-round, compounding particularly during hurricane season.

Nearby, you may find other waterways such as the Aes Intake Canal and Canal de Juana Diaz, which share the same hydrological characteristics and challenges. These connections highlight the interconnected nature of the river systems, where upstream conditions can significantly influence downstream flows.

Why the data matters here

Today's water data from the US Geological Survey provides critical insights into the current state of the Rio Jacaguas. Establishing a reading against the historical median illuminates its relative condition. By understanding how today's measurements stack up compared to the median for this calendar day across 14 years of historical data, water watchers can better prepare for potential flooding or dry spells. This context enriches our comprehension of the river's health, ecosystem functions, and, importantly, its impact on local communities and landscapes.

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