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
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.
Greens C at Greens Creek Mine near Juneau AK Water Level
Live river level, flow, historical records and forecast for Greens C at Greens Creek Mine near Juneau AK in AK, United States, built from official government gauge data.
- Location AK, United States
- Watershed admiralty island
- Primary gauge 15101490 (USGS)
About Greens C at Greens Creek Mine near Juneau AK
Greens Creek - A vital waterway in Admiralty Island.
Greens Creek, located near Juneau, Alaska, serves as an essential tributary in the region, flowing steadily through the beautiful landscapes of Admiralty Island. The creek is gauged at the Greens Creek Mine, providing valuable insights into hydrology and ecosystem health in this subarctic environment.
The watershed context
Greens Creek drains an area of approximately 8.9 square miles, capturing runoff from the surrounding environment and contributing to the local hydrology. The region's annual water cycle is influenced by the unique characteristics of subarctic hydrology, with snowmelt and spring breakup marking significant periods of flow, often accompanied by ice jams. During the summer, glacier-fed rivers in Alaska tend to peak, while winter brings low flows under ice, creating a dynamic seasonal ebb and flow for this watershed.
Why the data matters here
Monitoring the flow and water levels of Greens Creek is critical for understanding both environmental conditions and potential impacts on local wildlife. The U.S. Geological Survey (USGS) provides key measurements that inform on water levels and discharge rates, allowing researchers, local stakeholders, and land managers to make informed decisions regarding conservation and resource use in this area.
Today’s reading from the gauging station informs both current and historical water levels, giving context to the ongoing hydrological patterns over the last 37 years. By comparing today’s measurement against the median for this calendar day, useful insights into seasonal trends and anomalies arise. This approach provides a nuanced understanding of Greens Creek’s flow, going beyond just the raw number to reveal its implications for ecological health and water resource management.
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
