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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.

Mittry Lake Diversion at Imperial Dam Water Level

Live river level, flow, historical records and forecast for Mittry Lake Diversion at Imperial Dam in AZ, United States, built from official government gauge data.

About Mittry Lake Diversion at Imperial Dam

Mittry Lake Diversion at Imperial Dam - A critical flow point in the Lower Colorado watershed.

Mittry Lake Diversion plays a vital role in water management at Imperial Dam, Arizona, acting as an important gauge for water levels in the Lower Colorado watershed. This river segment serves both ecological and hydrological functions, supporting a range of local environments while also being a crucial point for water diversion and distribution in arid southwestern landscapes.

The watershed context

Set against the backdrop of the Lower Colorado watershed, Mittry Lake Diversion is influenced by the dynamic hydrology typical of arid regions. Summer monsoon thunderstorms can lead to rapid rises in water levels due to flash floods, while winter conditions often bring snowmelt from higher elevations that further contribute to varying water flows in the larger Colorado River system. The interplay of these elements significantly shapes the ecological character of the area, influencing the aquatic ecosystems and terrestrial environments connected to these waterways.

Nearby monitoring stations, such as the All-American Canal below Pilot Knob Wasteway and the Colorado River below Imperial Dam, indicate the diverse and interconnected nature of water flows in this region. Each gauge captures unique aspects of water levels and flows, providing a comprehensive understanding of how environmental factors impact water management.

Why the data matters here

The data coming from Mittry Lake Diversion at Imperial Dam is critical for various stakeholders, including farmers, local governments, and environmental scientists. Monitoring levels and discharge helps in managing water resources effectively in a region that can experience severe fluctuations due to both seasonal changes and extreme weather events.

Today’s reading from the USGS station shows the water level at Mittry Lake Diversion compared to the median for this date over the past 50 years, providing valuable context to assess current flows relative to historical norms. This approach is essential, as the median provides a benchmark against which fluctuations can be understood, offering insight into the potential impacts of ongoing changes in climate patterns and water usage.

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