Horicon Weather

Quiet seasonal conditions. Common during dry summers or fall drawdown. Rock River channel edges and inner marsh mudflats become exposed near the banks. Kayaks, canoes, and shoreline recreation are completely unaffected — powered boats should use caution, as shallow areas may cause grounding or prop damage.

Standard resting river elevation. Flow is fully contained within the main channel and marsh banks. The Rock River and Horicon marsh are operating exactly as they should — this is the baseline that keeps the Horicon ecosystem humming.

The river reaches bankfull state. Water begins pushing into low floodplains, and the marsh starts to flex its boundaries — lower boardwalk sections, agricultural edges, and wildlife trails near the river may see encroachment. On-water recreation remains possible but conditions are changing. Operators of larger vessels should be aware that rising water reduces clearance under bridges along the river corridor.

Minor flooding begins. Water begins pushing into low floodplains, and the marsh starts to flex its boundaries — lower boardwalk sections, agricultural edges, and wildlife trails near the river may see encroachment. On-water recreation remains possible but conditions are changing. Floating debris — including dislodged cattail mats and submerged or floating logs — may present navigation hazards. Operators of larger vessels should also be aware that rising water reduces clearance under bridges along the river corridor.

Significant structural risks possible. Properties and basements nearest the main channel face real flood risk. Secondary roads along the marsh boundary may require detours or be closed entirely. Check local advisories before traveling near the river corridor.