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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Gulkana R at Sourdough AK Water Level
Live river level, flow, historical records and forecast for Gulkana R at Sourdough AK in AK, United States, built from official government gauge data.
- Location AK, United States
- Watershed middle copper river
- Primary gauge 15200280 (USGS)
About Gulkana R at Sourdough AK
Gulkana River - A vital artery in Alaska's subarctic landscape.
The Gulkana River at Sourdough is an important waterway in Alaska's Middle Copper River watershed. This river is situated within the subarctic region, where its flows are significantly influenced by seasonal cycles of snowmelt and winter ice cover. The Gulkana River serves not only as a habitat for local wildlife but also as a source of water for communities in the area.
The watershed context
The Gulkana River flows through a drainage area of approximately 1,760 square miles. It is part of the Middle Copper River watershed, which includes notable neighboring rivers such as the Tazlina River. The seasonal rhythm of this region is characterized by spring breakup and snowmelt, driving the river's annual flows. Typically, peak runoff occurs mid-to-late summer, which is a crucial time for both ecological processes and local resource management. In winter, flow is reduced under the ice cover, exemplifying the natural ebb and flow of this subarctic environment.
Why the data matters here
Monitoring the Gulkana River is essential for understanding water conditions in this area, particularly for regional stakeholders such as anglers and farmers. The gauge is operated by the U.S. Geological Survey (USGS), which measures not only water levels but also river discharge. Today's reading is a key indicator when compared against the median for this calendar day over the past 50 years, allowing for a better understanding of current flow conditions. This insight can help residents prepare for potential flooding or understand seasonal changes that affect both the ecology and human activities along the Gulkana River.
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
