Verify your email to receive alerts and history exports.
Favorites
Loading…
Notifications
No active alerts
Set an alert on any lake to get notified when levels change.
The Nibi Dispatch
Water moves. Stay ahead of it.
One email a week — freshet watches, record levels, new regions. Nothing else.
Map

Sign in

Alerts & notifications Get notified when your favorite lakes go outside normal range
Loading…
Your account Email, subscription, and account actions
Loading…
DEV ZONE

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.

Mayhew Creek near Trenton Water Level

Live river level, flow, historical records and forecast for Mayhew Creek near Trenton in Canada, ON, Canada, built from official government gauge data.

About Mayhew Creek near Trenton

Mayhew Creek - a vital flow in the Trent-Crowe watershed.

Mayhew Creek, located near Trenton, Ontario, plays a significant role in the Trent-Crowe watershed. This lively river, draining roughly 33.3 square kilometres above the station, meanders through a diverse landscape, surrounded by both agricultural and natural areas that are integral to this region's ecosystem.

The watershed context

The Trent-Crowe watershed serves as a crucial catchment area, impacting local communities, economies, and wildlife. Mayhew Creek benefits from the seasonal patterns typical of the region, marked by snowmelt-driven hydrology. The spring freshet, which occurs in late April to May, brings a notable surge in water levels. Following this, natural summer drawdown occurs from July through September as evaporation and low inflow take their toll. As autumn approaches, early winter starts to see a decline in water levels as ice begins to form, setting a rhythm that influences the local ecology and water management practices.

The creek is flanked by several peer water bodies, including Burnley Creek, Crowe River, Salt Creek, and Trout Creek. Each share similar seasonal patterns that underscore the importance of interconnectivity within this watershed, allowing for the dissemination of nutrients and habitat across a broad network of waterways.

Why the data matters here

Monitoring the hydrology of Mayhew Creek is vital for understanding both current conditions and historical trends. The station provides discharge measurements, crucial for anticipating changes in water flow and assessing its impact on the surrounding environment. Today's reading against the historical median for this calendar day reveals important insights into water conditions. The Water Survey of Canada (WSC) operates this gauge and with over 32 years of data, evaluating today's flow helps gauge whether it aligns with typical spring conditions, aiding in flood watches and resource management across the Trent-Crowe watershed.

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