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.
Kawainui Marsh near levee sta 15+00, Oahu Water Level
Live river level, flow, historical records and forecast for Kawainui Marsh near levee sta 15+00, Oahu in HI, United States, built from official government gauge data.
- Location HI, United States
- Watershed oahu
- Primary gauge 16264600 (USGS)
About Kawainui Marsh near levee sta 15+00, Oahu
Kawainui Marsh - A unique wetland ecosystem on Oahu.
Kawainui Marsh, located near levee station 15+00 on Oahu, is a vital wetland that contributes to the island's diverse ecology. This marsh is part of the Oahu watershed and is unique in its hydrological characteristics due to the tropical climate. Rainfall drives the water levels here, which can rise dramatically in response to sudden downpours, reflecting the island's tropical island hydrology.
The water and the watershed
Kawainui Marsh plays a significant role in the management of stormwater and the support of local biodiversity. The marsh drains an area of approximately 11 square miles, acting as a natural sponge during heavy rains. The surrounding landscape is influenced by the trade winds and seasonal Kona storms, which can lead to rapid fluctuations in water levels. As water accumulates, it nurtures rich habitats for various species of birds, insects, and aquatic life, making it a crucial area for ecological health and stability.
Ecology and water character
The marsh serves as an important habitat for numerous native species, some of which depend exclusively on wetland environments for their survival. The varying water levels throughout the year support diverse plant communities that can adapt to the shifting conditions. This adaptability creates a dynamic ecosystem that arises in response to the island's unique climate and weather patterns, characterized by its lack of a snowmelt season.
Why the data matters here
Understanding water levels at Kawainui Marsh is essential for monitoring the marsh's health and resilience. With a historical record spanning more than 21 years, today's reading provides context for current conditions in relation to the long-term trends established over the years. When comparing the current water levels to the median for today across the historical record, insights into the marsh's response to rainfall and seasonal changes can be gleaned. The U.S. Geological Survey (USGS) tracks these metrics, allowing researchers and local stakeholders to make informed decisions that support the ongoing management and preservation of this vital wetland ecosystem.
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
