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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.

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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

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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.

Nahatlatch River below Tachewana Creek Water Level

Live river level, flow, historical records and forecast for Nahatlatch River below Tachewana Creek in Canada, BC, Canada, built from official government gauge data.

About Nahatlatch River below Tachewana Creek

Nahatlatch River below Tachewana Creek - a lively tributary in the Lower Fraser basin.

The Nahatlatch River, flowing below Tachewana Creek, is an important waterway in British Columbia's Lower Fraser - Nahatlatch watershed. Draining a catchment area of approximately 715 square kilometres, this river feeds into the broader Fraser River system, linking it with a network of significant water bodies, including its peers such as the Coquihalla River and the Fraser River itself.

The watershed context

This region experiences mountain hydrology characterized by a seasonal freshet that is primarily driven by snowpack. The peak flow typically occurs from May to July, as meltwaters cascade down from the mountains, invigorating the river system. In the context of the Nahatlatch, this seasonal rhythm means that water levels can vary widely, reflecting both the snowpack accumulation during the winter months and the subsequent melt.

The Nahatlatch River not only contributes to the hydrological dynamics of its watershed but also serves as a vital resource for those in the area, including local anglers and cottagers. With its flow measuring station providing valuable data on both water levels and discharge, stakeholders can better understand the river’s behavior throughout the year.

Why the data matters here

Water level measurements from the Nahatlatch River, taken at the station "Nahatlatch River Below Tachewana Creek," offer crucial insights into the health and management of this river system. Today's reading provides a snapshot that can be compared against the median level for this calendar day, reinforcing the importance of tracking these changes over time. Over the past 49 years, the Water Survey of Canada has maintained a consistent dataset, allowing for a better grasp of seasonal patterns and long-term shifts in water levels.

Monitoring this site not only informs local decision-makers and residents about current conditions but also helps predict potential flooding or low-flow scenarios during critical seasons. Understanding today’s flow in the context of historical data empowers the community to make informed choices regarding water usage and conservation efforts for this vibrant river system.

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