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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.

Bill Williams River below Alamo Dam Water Level

Live river level, flow, historical records and forecast for Bill Williams River below Alamo Dam in AZ, United States, built from official government gauge data.

About Bill Williams River below Alamo Dam

Bill Williams River below Alamo Dam - Dynamic flows driven by seasonal storms.

The Bill Williams River below Alamo Dam is an essential watercourse in Arizona's arid landscape. This river captures the influence of both summer monsoon thunderstorms and the winter high-country snowmelt, providing a vital flow through a region characterized by its sporadic precipitation patterns. Draining an extensive area of approximately 4,633 square miles, the river is part of the Bill Williams watershed, which supports diverse ecosystems and varying hydrological behaviors.

The watershed context

The Bill Williams River feeds into the wider Bill Williams watershed, which plays a crucial role in managing water resources in this part of Arizona. The river's flow is subject to the region's arid Southwest hydrology, where summer storm events can induce rapid runoff and flash flooding, while the winter months often rely on high-altitude snowmelt to sustain water levels. This interplay creates a river that may run dry between significant precipitation events, reflecting the natural rhythms of the desert climate.

Nearby, the Bill Williams River near Parker serves as a notable peer, sharing similar water management challenges and characteristics as they both navigate the modified landscapes created by human activity and natural forces alike.

Why the data matters here

The real-time data from the USGS gauge at Bill Williams River below Alamo Dam provides insights into current conditions and streamflow trends. This information is particularly vital for those who rely on the waterway for agriculture, recreation, and flood management, as timely awareness of fluctuations can mean the difference between safety and risk.

Today's measurement offers a snapshot against the historical data taken over the past 50 years. By comparing the current reading to the median for this calendar day, stakeholders can gauge not just the absolute height of the water but its significance in the context of seasonal norms, enabling better preparation and response across the community.

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