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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 Guadiana near Guadiana, Naranjito PR Water Level

Live river level, flow, historical records and forecast for Rio Guadiana near Guadiana, Naranjito PR in PR, United States, built from official government gauge data.

About Rio Guadiana near Guadiana, Naranjito PR

Rio Guadiana - A dynamic waterway in Eastern Puerto Rico.

The Rio Guadiana, located near Guadiana in Naranjito, Puerto Rico, flows through a region characterized by rapid rainfall-driven changes. Known for its ability to respond quickly to precipitation, this river exemplifies the dynamic hydrology typical of tropical islands. With a drainage area of approximately 8.1 square miles upstream of the station, the Rio Guadiana captures rainfall from a steep and short basin, making it susceptible to flash flooding during intense weather events.

The watershed context

The Rio Guadiana is a vital part of the Eastern Puerto Rico watershed, connecting with a network of smaller streams and rivers such as the Lago Carite at Spillway and Rio Caguitas at Villa Blanca at Caguas. This region experiences consistent rainfall throughout the year, with more pronounced flooding occurrences during hurricanes and tropical waves. The watershed plays a crucial role in the local ecosystem, supporting diverse flora and fauna while also impacting agricultural practices and urban planning.

Why the data matters here

Today's reading from the USGS station monitoring the Rio Guadiana is an important metric for understanding the river’s current conditions. It is measured against the median for this calendar day across the station's historical record, spanning over 25 years. This method provides a clearer perspective than raw elevation alone, as it indicates how today's levels compare to seasonal and historical patterns. Tracking these fluctuations can aid in flood forecasting and water management strategies in this rainfall-dominated landscape.

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