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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 Inabon at Real Abajo Water Level

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

About Rio Inabon at Real Abajo

Rio Inabon - A vital waterway in Southern Puerto Rico.

The Rio Inabon flows steadily through the landscape of Southern Puerto Rico, offering a critical resource to the region. This gauge measures the river as it courses at Real Abajo, providing essential data for local stakeholders from farmers to flood-watchers. With a drainage area of approximately 9.7 square miles, it's a significant feeder into the broader water management context of the area.

The watershed context

The Rio Inabon is nestled within the Southern Puerto Rico watershed, which experiences distinct tropical island hydrology. Here, rainfall-driven flash floods can occur throughout the year, often exacerbated by hurricanes and tropical waves. This dynamic environment demands careful attention to real-time data, especially as steep short basins can swell rapidly in response to heavy rains, making the river a focal point for community preparedness.

Nearby, the river shares the landscape with other significant water bodies, including the Aes Intake Canal and various segments of the Canal de Juana Diaz. These connections within the watershed further contribute to its complexity and the essential role the Rio Inabon plays in local water behavior.

Why the data matters here

Understanding the flow measurements from the USGS at the Rio Inabon is crucial for managing flood risks and water quality in the area. Today’s reading serves as a gauge against the historical median for this calendar day over 50 years, providing insight into current conditions. Comparing this reading to the historical median helps local residents and authorities gauge whether current water levels are typical or unusual, allowing for better-informed decision-making regarding water usage and flood preparedness.

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