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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 Patillas near Patillas Water Level

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

About Rio Grande de Patillas near Patillas

Rio Grande de Patillas - A vibrant watercourse in Southern Puerto Rico.

Nestled within the lush terrain of Southern Puerto Rico, the Rio Grande de Patillas flows gracefully near the town of Patillas. This river plays a crucial role not only in the local ecosystem but also as an important resource for the surrounding communities. With a drainage area of approximately 18.3 square miles upstream, it captures rainfall runoff from the region, particularly influenced by the tropical island climate that can lead to rapid rises in water levels.

The watershed context

The Rio Grande de Patillas is part of a dynamic network of waterways in Southern Puerto Rico. Nearby, it shares its vicinity with several significant water bodies, including the Aes Intake Canal and Canal de Juana Diaz. This area is characterized by its rainfall-driven hydrology, which can result in flash floods, especially during hurricane seasons and tropical disturbances. The steep, short basins of this region respond swiftly to rainfall, making hydrological monitoring essential for the safety of local inhabitants and agriculture.

Why the data matters here

Currently, the Rio Grande de Patillas is monitored by the U.S. Geological Survey (USGS), which measures both water levels and discharge, providing valuable insights into its flow dynamics. Today's measurements can be directly compared to historical data, specifically the median for this calendar day over the past 50 years. This comparative approach allows community members and stakeholders to assess current conditions with greater context than simply relying on raw elevation figures. Understanding how today’s reading stacks up against these historical norms is vital for recognizing trends, planning for potential flood events, and ensuring the health of this vibrant waterway.

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