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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.

Truckee River Blw Derby Dam near Wadsworth Water Level

Live river level, flow, historical records and forecast for Truckee River Blw Derby Dam near Wadsworth in NV, United States, built from official government gauge data.

About Truckee River Blw Derby Dam near Wadsworth

Truckee River - A vital waterway in the high desert.

Nestled in northern Nevada, the Truckee River flows below Derby Dam near Wadsworth, serving as a significant artery for the surrounding landscape. This section of the river is a key part of the Truckee watershed, which encompasses an extensive drainage area contributing to its health and vitality.

The watershed context

Draining roughly 1,676 square miles above the station, the Truckee River is fed by mountain snowmelt that typically drives high water levels in the spring. As the spring thaw concludes and summer approaches, rainfall from thunderstorms can lead to localized flash floods, a testament to the area's dynamic hydrological conditions. While many channels may run ephemeral, the Truckee remains a perennial stream, showcasing the strength of its flow amid the great basin's often dry surroundings. The river weaves through a landscape that includes notable nearby creeks such as Davis Creek and Dog Creek, adding to the water body's rich network.

Why the data matters here

Monitoring the Truckee River below Derby Dam is essential for understanding its flow patterns and health. The US Geological Survey (USGS) provides valuable insights through this station, including discharge data. Today's measurement is particularly important as it offers a comparison to historical records, with readings taken over the past 50 years. Observing this data against the median for today's date allows for a clearer perspective on current water levels compared to typical flows, revealing trends that can inform local stakeholders.

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