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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 Maunabo at Lizas Water Level

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

About Rio Maunabo at Lizas

Rio Maunabo - A vital waterway in Eastern Puerto Rico.

The Rio Maunabo emerges as a significant river within the Eastern Puerto Rico watershed, flowing with purpose and character. This river not only contributes to the local hydrology but also connects with several nearby water bodies, playing a crucial role in the region's ecosystem and hydrological balance.

The watershed context

Draining roughly 14 square kilometres (5.4 square miles) above the station, the Rio Maunabo serves as a key tributary in its watershed. Surrounded by other notable water bodies such as Lago Carite and the various Quebradas like Quebrada Grande and Quebrada Josefina, the river is woven into a dense network of streams and creeks. Puerto Rico's rainfall-driven hydrology leads to quick responses in river levels, especially during storms, making the Rio Maunabo particularly sensitive to weather changes throughout the year.

Why the data matters here

Understanding the water level data from the Rio Maunabo at Lizas is essential for residents and stakeholders. The U.S. Geological Survey (USGS) measures important attributes such as discharge, which can help assess the river's behavior and its response to tropical rainfalls and potential flash floods. For any readings, comparing them against the median for the calendar day provides context that raw elevation numbers cannot; today’s reading from the USGS offers insights based on historical trends over the last 50 years. This vital information empowers community members to prepare for significant events that can impact water conditions in their area.

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