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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 Humacao at Las Piedras Water Level

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

About Rio Humacao at Las Piedras

Rio Humacao - a dynamic river shaped by tropical rainfall.

The Rio Humacao flows through the vibrant landscape of Eastern Puerto Rico, drawing from a catchment area of approximately 6.6 square miles. This river is integral to the local ecosystem, influencing both the surrounding environment and communities. The region experiences a tropical island hydrology, characterized by rainfall-driven flash floods that can develop rapidly, particularly with the arrival of hurricanes and tropical waves. This means that residents and visitors alike must be vigilant as conditions can change swiftly.

The watershed context

The watershed surrounding the Rio Humacao supports a network of local streams and rivers, including notable peers like Lago Carite at Spillway and Rio Bairoa above Bairoa, Caguas. These bodies of water, while sharing similarities, each play unique roles in the hydrology of Eastern Puerto Rico. Particularly in this region, the steep terrain and short basins can lead to a sudden influx of water, which shapes both the river's course and the surrounding ecosystems.

Why the data matters here

Monitoring the Rio Humacao is crucial for residents and stakeholders, especially given the historical context of the last 50 years. The U.S. Geological Survey (USGS) provides vital data on the river's discharge, which helps in understanding both current conditions and potential future scenarios. Today's reading offers practical insights into water levels compared with the median for this calendar day over the station's historical record. This figure surpasses the raw elevation data by providing context, helping gauge the river's behavior against expected norms. By analyzing these statistics, users can better appreciate the river's dynamics and remain informed about fluctuating conditions that can arise in this tropical environment.

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