Maple River at Mapleton Water Level
Live river level, flow, historical records and forecast for Maple River at Mapleton in IA, United States, built from official government gauge data.
- Location IA, United States
- Watershed maple 0005
- Primary gauge 06607200 (USGS)
About Maple River at Mapleton
The Maple River in the Maple watershed, Iowa, is monitored at Mapleton.
Season by season
At this station, the seasonal pattern is modest on paper but still matters at the bank. The highest typical month is June at 6.59 ft (2.01 m), and the lowest typical month is September at 5.18 ft (1.58 m). That 17 in (43.1 cm) annual swing is enough to change how much dock, bank, or intake stays covered through the open-water season.
For a river on the prairie-midwest flatlands, spring is the period to watch first. Snowmelt and rain on frozen or saturated ground can push levels up quickly, and summer storms can add short rises between quieter stretches. By late summer and into September, the river is usually lower than in early summer.
The drainage area above this station is 669 sq mi (1,733 km2), so water reaching the gauge has a broad upstream area to respond to storms and seasonal melt.
Records and rises
The highest recorded level is 22.6 ft (6.89 m), set in March 2019. The lowest recorded level is 3.65 ft (1.11 m), set in October 2022. Those two points show the range this river has covered at Mapleton over the record.
That spread matters for anyone using a fixed landing, pump, or crossing. A level near the lower end can leave shallow access and more exposed bed, while a high-water event can push the river far beyond its usual summer range.
The station has 50 years on record. The fastest 24-hour rise is not listed here, so there is no verified warning-time figure to quote from this dataset.
Reading the hero number
The hero number on this page is the current reading compared with the median for this calendar day across the station record. That is more useful than the raw elevation alone because a river can be “high” in January and “low” in June at the same feet above the datum.
This station is operated by the USGS. With more than 50 years of records, the day-specific median gives a better read on whether today is ordinary for this date, or sitting above or below what the Maple River usually does here.
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
Nibi Metrics - live water levels, flow, and forecasts for lakes and rivers across Canada, the US and the UK
Real-time water levels, forecasts, and alerts for lakes and rivers across Canada, the US and the UK. Built on official government data.
Nibi Metrics tracks more than 13,000 gauged lakes and rivers across Canada, the United States and the United Kingdom, reading directly from official federal monitoring networks: the Water Survey of Canada, the United States Geological Survey, Quebec's provincial hydrometric network, and the Environment Agency for England. Every number on the platform is measured, not modelled - taken from a government gauge on the water itself and compared against that location's own historical record for this exact date.
What you can see for any monitored lake or river
The level right now, in feet or metres, updated as the source agency publishes new readings - for many stations that is every five to fifteen minutes. How today compares to typical: every location carries its own typical-for-this-date band built from its historical record, so a reading is never just a number - it is above, below, or near what this water usually does on this calendar day. Which way it is moving: a measured RISING, FALLING, or STEADY verdict computed from the gauge's own recent readings, with the rate of change - the difference between a flood ending and one beginning. What comes next: level forecasts up to 72 hours ahead, driven by the gauge's recent behaviour, upstream water, and quantitative precipitation forecasts, alongside live radar, lightning, and weather for the surrounding region.
Alerts that watch the water for you
Set a threshold on any location - a level, a distance above typical, or a rate of climb - and Nibi emails or notifies you the moment the gauge crosses it. Cottagers use it for spring freshet, anglers for river conditions, marinas and municipalities for operations. The scanning runs around the clock against the same measured data shown on every page.
Where Nibi comes from
Nibi means water in Anishinaabemowin. The platform began at a family cottage on Lake Muskoka, Ontario, where the spring melt floods the shoreline most years and the only forecast was standing on the dock, looking, and guessing. It grew into an independent, member-funded platform run by Muskoka Research Inc. - no investors, no data resale, and a privacy policy shorter than most cookie banners. The core data is free for everyone, forever; paid plans add automation like multi-location alerts, deep history, and reports.
Coverage
Nibi spans the continent: every Canadian province and territory with active federal gauges - from Vancouver Island rivers to the Muskoka lakes, prairie reservoirs, and Quebec's hydrometric network - and the United States from Maine to the Texas Hill Country, the Ohio Valley, and the Pacific Northwest. Coverage grows where the water news is: when a basin floods, its gauges join the platform with their full historical records attached. Many stations report every five to fifteen minutes; most report at least hourly; every page states exactly when its gauge last spoke.
Free forever, funded by members
The core promise is simple: the water data is free, for everyone, forever. Live levels, maps, radar, and recent history never sit behind a paywall. Paid plans fund the platform by adding automation - multi-location alerts, decades of history, longer forecasts, and PDF reports - so the people who need more carry the cost for everyone who just needs to check the lake before driving up. There are no investors and no advertising deals shaping what the data says.
Water Stories
Field notes and explainers from the Nibi desk - how to read a staff gauge, what a 100-year flood actually means, how snowpack becomes summer water.
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.
How every number is computed - About the platform
