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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.

Mendenhall R at Brotherhood BR at Auke Bay AK Water Level

Live river level, flow, historical records and forecast for Mendenhall R at Brotherhood BR at Auke Bay AK in AK, United States, built from official government gauge data.

About Mendenhall R at Brotherhood BR at Auke Bay AK

Mendenhall River - A vital waterway in the Lynn Canal region.

The Mendenhall River flows gracefully at Brotherhood Bridge, providing a snapshot of the complex hydrology typical of subarctic waterways in Alaska. This river, nestled within the expansive Lynn Canal watershed, is central to the ecological and hydrological dynamics of the area.

The water and the watershed

The Mendenhall River drains into the Lynn Canal, a significant marine inlet known for its steep, rugged fjord-like features. The river's flow reflects the typical annual cycle marked by spring breakup and snowmelt, crucial factors that drive the area's flood patterns. As temperatures warm, ice jamming becomes a common occurrence, adding an intriguing dynamic to the river’s behavior. The Mendenhall serves as an important contributor to local ecosystems and habitats, underscoring its role in the broader watershed.

Why the data matters here

Current measurements for the Mendenhall River are essential for understanding its health and behavior over time. As of today, the data from the U.S. Geological Survey (USGS) provides insights into how today’s reading compares against the historical median for this date. This figure is valuable because it allows for context within the river’s historical behavior, revealing shifts in hydrology that can inform local resource management and conservation efforts. The reliability of day-to-day and seasonal comparisons aids in tracking changes that could indicate larger environmental trends, thereby ensuring this vital waterway continues to sustain the local flora and fauna.

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