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.
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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.
Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.
The science of snow water equivalent and why it drives the season ahead.
What the numbers on the measuring stick actually tell you.
Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.
One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.
Black Draw at San Bernardino Nwr near Douglas Water Level
Live river level, flow, historical records and forecast for Black Draw at San Bernardino Nwr near Douglas in AZ, United States, built from official government gauge data.
- Location AZ, United States
- Watershed san bernardino valley
- Primary gauge 09537700 (USGS)
About Black Draw at San Bernardino Nwr near Douglas
Black Draw - a fleeting desert watercourse.
Black Draw at San Bernardino NWR near Douglas is a river that reflects the unique hydrology of the Arid Southwest. This region experiences a striking seasonal rhythm where summer monsoon thunderstorms can create violent flash floods, while winter storms and snowmelt from higher altitudes contribute to the water flow in larger rivers. Between these events, many channels, including Black Draw, may run dry, presenting a stark and dynamic landscape.
Why the data matters here
Today's measurement from the U.S. Geological Survey indicates Black Draw's flow, gathered over the last two years of record-keeping. Understanding how the current water level compares to the historical median for this date is crucial. This context highlights the natural variations in this ephemeral watercourse, where short-lived storms can drastically alter flow patterns, and groundwater replenishment remains vital for the local ecosystem.
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
