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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.

Grand River below Shand Dam Water Level

Live river level, flow, historical records and forecast for Grand River below Shand Dam in Canada, ON, Canada, built from official government gauge data.

About Grand River below Shand Dam

Grand River below Shand Dam - A key point along the Upper Grand River.

The Grand River below Shand Dam is an integral part of the Upper Grand watershed in Ontario, Canada. This section of the Grand River serves as a vital resource for various ecological and recreational activities in the region. With a catchment area of approximately 786 square kilometers draining into the river at this gauge, the water dynamics here are influenced not just by rainfall, but also by the effects of snowmelt and seasonal changes.

The watershed context

The Upper Grand watershed features a network of tributaries and river segments, including notable peers such as Blue Springs Creek and Canagagigue Creek. The Grand River itself is characterized by its seasonal hydrology, driven predominantly by snowmelt. Each year, the spring freshet arrives between late April and May, bringing increased flow to the river as accumulated snow melts. This is followed by a natural drawdown during the summer months, as evaporation rates rise and inflows diminish. As winter approaches, the river experiences another decline, coinciding with the formation of ice.

Why the data matters here

Water data from the Grand River below Shand Dam comes from the Water Survey of Canada and includes discharge measurements, which are crucial for monitoring the health of the river and managing community needs. Today’s reading can be compared against the median for this calendar day over the station's historical record of 50 years, providing important context to assess current conditions. This allows cottagers, anglers, farmers, and flood-watchers to understand water trends and make informed decisions.

The ability to compare current readings to historical medians helps stakeholders interpret the data's significance. Raw elevation changes can be misleading, but knowing how today’s reading stacks up against historical norms offers a clearer picture of the river’s behavior. The insights gained here are vital for maintaining the balance between human activity and natural systems along this important watercourse.

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