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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 de Bayamon Blw Lago de Cidra Dam Water Level

Live river level, flow, historical records and forecast for Rio de Bayamon Blw Lago de Cidra Dam in PR, United States, built from official government gauge data.

About Rio de Bayamon Blw Lago de Cidra Dam

Rio de Bayamon Blw Lago de Cidra Dam - A vital waterway in Eastern Puerto Rico.

The Rio de Bayamon, flowing below the Lago de Cidra Dam, is an important river within the Eastern Puerto Rico watershed. This waterway plays a significant role in the hydrology of the region, especially in the context of the frequent rainfall that characterizes Puerto Rico. With an upstream catchment area of roughly 8.3 square miles, the river fulfills its function of channeling rainfall runoff, which can lead to rapid fluctuations in water levels, particularly during intense weather.

The watershed context

The Eastern Puerto Rico watershed is defined by steep terrains that can respond to heavy rainfall within hours. This rainfall-driven hydrology can lead to flash floods, especially during hurricane seasons and tropical waves when the intensity of precipitation peaks. Neighbouring water bodies, including Lago Carite and several other smaller streams and rivers, are also influenced by this tropical hydrological pattern. The interconnectedness of these watersheds underscores the significance of accurate water monitoring for local communities and ecosystems.

Why the data matters here

Today's reading at the Rio de Bayamon Blw Lago de Cidra Dam, provided by the U.S. Geological Survey (USGS), is crucial for understanding current water conditions in this rapidly changing environment. By comparing this measurement to the median for this calendar day across 36 years of historical records, water managers and residents gain critical insight into whether the current level is typical or indicative of potential flash flooding. This perspective on the day's reading is more informative than raw elevation alone, as it takes seasonal trends and historical data into account to foster effective responses to dynamic weather conditions.

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