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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Ugum River above Talofofo Falls, near Talofofo, Guam Water Level
Live river level, flow, historical records and forecast for Ugum River above Talofofo Falls, near Talofofo, Guam in GU, United States, built from official government gauge data.
- Location GU, United States
- Watershed guam
- Primary gauge 16854500 (USGS)
About Ugum River above Talofofo Falls, near Talofofo, Guam
Ugum River Above Talofofo Falls - A dynamic waterway shaped by tropical rainfall.
The Ugum River flows with vigor above the Talofofo Falls on the eastern side of Guam. Nestled in a region known for its short, steep basins, the river experiences frequent changes in flow due to its tropical Pacific island hydrology. Rainfall is the primary driver of the river's character, with the water volume swelling during the wet season, particularly influenced by typhoons and intense rain events.
The watershed context
The Ugum River is an important feature within Guam’s watershed, which captures and conveys water from the surrounding landscape. Draining roughly 24 square kilometers (5.9 square miles) above the station, the river is joined by several peers, including the Almagosa River and La Sa Fua River, supporting a complex web of ecological interactions. This network of rivers and streams plays a critical role in managing the island’s water resources, especially during the wet season when the risk of flash flooding can rise dramatically.
During the dry season, the river may face significant fluctuations in water levels, typical of the tropical climate. This inherent cycle is crucial for maintaining the rhythms of life on the island, impacting both the surrounding ecosystems and human activities dependent on this water source.
Why the data matters here
Monitoring the Ugum River's water levels enables important insights into the river's behavior, especially in relation to rainfall patterns and potential flooding. With a rich record of 49 years, data collected by the U.S. Geological Survey (USGS) helps assess current conditions against historical median values. Today's reading reflects the immediate state of the river, providing context to any expected variations due to seasonal weather changes.
Understanding how today’s water levels compare to the median for this date is critical for local residents and stakeholders, enabling them to make informed decisions about water use, development, and flood preparedness.
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
