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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 Grande de Manati at Highway 155 near Morovis Water Level

Live river level, flow, historical records and forecast for Rio Grande de Manati at Highway 155 near Morovis in PR, United States, built from official government gauge data.

About Rio Grande de Manati at Highway 155 near Morovis

Rio Grande de Manati - A vital waterway in Morovis.

The Rio Grande de Manati at Highway 155 near Morovis flows through a vibrant region known for its tropical island hydrology. This river is part of the Cibuco-Guajataca watershed and showcases the dynamic interactions between rainfall and the landscape, contributing to a unique environment where water levels can rise rapidly, particularly during heavy rainfall events, hurricanes, and tropical waves. The river is significant not only for its natural flow but also for the various agricultural and recreational activities occurring along its banks.

Why the data matters here

Monitoring the Rio Grande de Manati is crucial for understanding both the waterway itself and the surrounding community. The gauge at Highway 155 provides essential data about water levels and discharge, which are vital for local farmers, residents, and emergency management authorities. As storms can lead to sudden flash floods, timely information is essential for safety and resource management in this region.

Today, the river's gauged levels are indicative of current rainfall patterns and can be assessed against historical data, helping to inform stakeholders about the state of the waterway at any given moment. This river has been monitored for roughly nine years, and today's readings from the U.S. Geological Survey are compared against the median for this calendar day within that timeline, offering a reliable context for current conditions. This measurement allows for a clearer understanding of how the current water levels deviate from typical seasonal patterns, crucial for proactive response planning in the face of potential flooding.

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