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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 at Otowi Bridge Water Level

Live river level, flow, historical records and forecast for Rio Grande at Otowi Bridge in NM, United States, built from official government gauge data.

About Rio Grande at Otowi Bridge

Rio Grande at Otowi Bridge - A vital artery in the arid Southwest.

The Rio Grande at Otowi Bridge serves as a crucial waterway within New Mexico's expansive Upper Rio Grande watershed. Spanning an extensive drainage area of approximately 14,300 square miles, this river is not just a significant landmark, but a lifeline for the communities and ecosystems that rely on its waters. As a river marked by the intricate dynamics of the region’s hydrology, the Rio Grande experiences notable seasonal fluctuations, shaped by a combination of high-country snowmelt and the unique characteristics of the arid Southwest climate.

The watershed context

The Upper Rio Grande watershed is characterized by a blend of diverse ecosystems, sustained by the seasonal rains and runoff that define this part of New Mexico. In the spring, the melting snow from the high country contributes to the river's flows, creating a rhythm of life for various aquatic species. However, as summer approaches, the landscape transitions, often seeing long periods of dryness punctuated by flash floods from July to September monsoon storms. This dramatic shift in water availability impacts agriculture, wildlife, and recreation, making it vital for local stakeholders to monitor and understand the river's conditions.

Why the data matters here

Understanding the flow data for the Rio Grande at Otowi Bridge is essential for managing the natural resources and ensuring the health of the river ecosystem. Today's reading reflects the current conditions compared to the historical median for this calendar day, which over 50 years of records provide. By focusing on the median, users can gain a clearer perspective on the river’s status, revealing how it stands in relation to its historical norms. This is particularly important in the context of the significant swings between wet and dry periods characteristic of the region, as documented by the U.S. Geological Survey (USGS). Monitoring fluctuations in the river's discharge helps inform farmers, anglers, and flood-watchers alike, guiding their decisions in a landscape where water is often scarce and valuable.

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