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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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.
South Halawa Stream near H-3 Freeway, Oahu Water Level
Live river level, flow, historical records and forecast for South Halawa Stream near H-3 Freeway, Oahu in HI, United States, built from official government gauge data.
- Location HI, United States
- Watershed oahu
- Primary gauge 16226700 (USGS)
About South Halawa Stream near H-3 Freeway, Oahu
South Halawa Stream - A rapid-response river shaped by Oahu's tropical climate.
South Halawa Stream near the H-3 Freeway is a defining feature of the Oahu landscape, responding swiftly to rainfall events typical of Hawaii's tropical environment. This streamlined river is influenced intensely by the storm activity that characterizes the region, making it a key player in the local hydrology.
Why the data matters here
The gauge at South Halawa Stream, operated by the U.S. Geological Survey, captures critical data about this stream's behavior in real-time. One of the defining features of this area is its susceptibility to rainfall-driven flash floods, which can cause water levels to surge dramatically over a short period. Monitoring the stream allows for a better understanding of these rapid changes, which is especially important for public safety and environmental management.
Examining current water levels and comparing them to median values from across more than five years of historical data provides insights into whether the stream's flow is significantly above or below average. This context helps inform decisions for local management and preparedness in the face of potential flooding events.
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
