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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.

Canal Principal Diversion above. Lago Guerrero Water Level

Live river level, flow, historical records and forecast for Canal Principal Diversion above. Lago Guerrero in PR, United States, built from official government gauge data.

About Canal Principal Diversion above. Lago Guerrero

Canal Principal Diversion above Lago Guerrero - A critical waterway in Puerto Rico's tropical landscape.

The Canal Principal Diversion above Lago Guerrero is a vital conduit in the Cibuco-Guajataca watershed, contributing to the distinctive hydrology of Puerto Rico. This river channel plays an essential role in managing the water flow that influences both local ecosystems and agricultural activities within the region.

Why the data matters here

Current measurements at this station are crucial for understanding the hydrological dynamics of a region that experiences rainfall-driven flash floods throughout the year. Given Puerto Rico's tropical climate, these flash floods can escalate rapidly, particularly during hurricane events. The data collected by the U.S. Geological Survey (USGS) at this site informs flood forecasting and water resource management decisions that affect the community and natural environment.

With a measurement history of over seven years, trends derived from this data enable effective planning for both potential flood events and periods of low water availability, ensuring residents, farmers, and local ecosystems can respond appropriately. The importance of this information cannot be overstated, as it guides both immediate responses to rainfall events and long-term water management strategies.

Today's reading at the Canal Principal Diversion is a critical piece of data when compared to the median for this calendar day across the station’s historical record. By understanding today's measurements in context, stakeholders can gain insights into unusual fluctuations in water levels that may indicate broader environmental changes or upcoming weather challenges. This data contributes to making informed decisions in flood-prone areas, helping safeguard lives and livelihoods in this vibrant region.

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