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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.

Owyhee River near Mountain City Water Level

Live river level, flow, historical records and forecast for Owyhee River near Mountain City in NV, United States, built from official government gauge data.

About Owyhee River near Mountain City

Owyhee River - A vital artery in the Upper Owyhee watershed.

The Owyhee River near Mountain City flows through a predominantly arid landscape, carrying the unique hydrology of the Great Basin region. This river is an essential part of the Upper Owyhee watershed, which encompasses a diverse and varied ecosystem. The river's journey reflects the seasonal patterns of its surroundings, where mountain snowmelt surges in spring give way to drier conditions during the summer months.

The watershed context

The Owyhee River drains a catchment of approximately 391 square miles, an area characterized by the influence of both snowmelt and occasional summer thunderstorms. This climate pattern results in spring peaks and, at times, localized flash floods that can dramatically change the river's flow. The surrounding landscape, shaped by high desert and mountain ranges, plays a crucial role in the water's behavior here. Other rivers in the vicinity include the Ef Owyhee River at Crutcher Crossing and the Owyhee River near Gold Creek, emphasizing the interconnectedness of the water systems in this region.

Why the data matters here

Current data from the U.S. Geological Survey (USGS) provides insights into the Owyhee River's flow, with today’s reading contributing to a 35-year historical record. By comparing today's reading against the median for this calendar day, we gain valuable context about current conditions. This approach allows observers—be they farmers, anglers, or flood-watchers—to understand the river's behavior relative to historical trends, offering a clearer picture of how today’s water levels stack up against what's typical for this time of year.

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