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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Upper Helemano Reservoir near Wahiawa, Oahu Water Level
Live lake level, flow, historical records and forecast for Upper Helemano Reservoir near Wahiawa, Oahu in HI, United States, built from official government gauge data.
- Location HI, United States
- Watershed oahu
- Primary gauge 213133158014201 (USGS)
About Upper Helemano Reservoir near Wahiawa, Oahu
Upper Helemano Reservoir - A vital water source on Oahu.
Nestled near Wahiawa on the island of Oahu, Upper Helemano Reservoir serves as an important water resource in Hawaii's unique tropical hydrology. This reservoir plays a critical role in managing water supply in an area characterized by its steep landscapes and rainfall-driven weather patterns.
The watershed context
Upper Helemano Reservoir is part of the Oahu watershed, which features a diverse network of water bodies. Nearby, you can find several streams and reservoirs, including Heeia Stream and Helemano 6 Reservoir. These bodies of water collectively contribute to the region's water dynamics, particularly during heavy rain events. The island’s hydrology is influenced by both trade winds and Kona storms, which can lead to sudden flash floods, making the management of water resources crucial.
Why the data matters here
Understanding the water levels at Upper Helemano Reservoir, including today's measurements from the U.S. Geological Survey (USGS), is essential for residents, farmers, and anyone dependent on reliable water access in the area. The reservoir's readings provide insight into its capacity and the potential for flooding, especially during intense rainfall, which can occur rapidly due to Oahu's topography.
Today’s reading can be compared against the median for this calendar day over a 15-year span. This historical context provides a more nuanced understanding of current water levels than looking at the raw elevation alone. Monitoring water levels helps manage resources effectively, assuring that both human and ecological needs are met throughout different weather patterns on the island.
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
