Fox River Current Observations

About the Fox River Monitoring Network

Dive Otter organizes public USGS observations as a north-to-south river corridor: from the upper Fox River in Wisconsin and the Chain O’Lakes, through McHenry, Algonquin, Elgin, St. Charles, Geneva, Batavia and Montgomery, then downstream through Yorkville and Dayton. The network includes mainstem gauges, tributary stations, lake and dam-control observations, precipitation stations and water-quality sensors.

No single station describes the entire river, and not every station supports a published reach product or the same measurements. Mainstem gauges provide broad river context; tributaries and precipitation show localized runoff; lake, dam and tailwater stations describe controlled transitions; and water-quality sensors add evidence where it is available. Each Conditions product uses only the approved stations and proxies for that reach.

Current River Context

Current observations combine the latest usable mainstem, tributary, precipitation and water-quality measurements. Recent but delayed observations remain visible with their age clearly labeled so the seven-day trace is not mistaken for a live reading; feeds older than seven days are omitted from this page.

Some stations provide corridor context without mapping to a published Conditions reach. The page reports measurements and literal changes; it does not turn them into a safety or fishing recommendation.

About These Measurements

Values shown are locally archived USGS observations. Each row identifies whether USGS marks that observation provisional or approved; provisional observations may subsequently be revised. Temperature is stored in its original Celsius value and converted to Fahrenheit for display.

Short-term change values are raw differences over 6, 24 and 48 hours. Trend graphs use seven days for every displayed series.

Feed health describes observation age only. It does not mean the river is healthy, unhealthy, safe or unsafe, and it is not itself a fishing recommendation.