River Conditions
Illustrated map of Black Hawk Lake

River stage

Oyens, Willow Creek

River level
1253.95 ft
Status
Below flood stage
Action stage
1264.00 ft
Flood stage
1266.00 ft
Record crest
1266.94 ft

Last reported 2026-10-13 | NWS OYEI4

Record crest
1266.94 ft
Flood stage
1266.00 ft
Moderate flood
1269.00 ft
Major flood
1271.00 ft
Crest date
2024-06-22

In brief

The Willow Creek at Oyens, IA read 1253.95 ft on Oct 13, 2026, 10.05 ft below action stage.

Source: National Weather Service gauge OYEI4

Stage threshold profile

Action stage 1264.00 ftMinor flooding 1266.00 ftModerate flooding 1269.00 ftMajor flooding 1271.00 ft CURRENT 1253.95 ft

Highest crests on record

RankCrestDate
1 1266.94 ft 2024-06-22
2 1264.50 ft 2025-07-30

Flood crests recorded at this gauge by the National Weather Service.

What happens at each level

  1. 1264.00 ft

    Minor lowland flooding begins.

  2. 1265.00 ft

    The lowest portions of Willow Creek Campground in Le Mars may begin to flood.

  3. 1266.00 ft

    Significant agricultural flooding begins, and the park and golf course on the northeast edge of Le Mars begin to flood. The lowest portions of the road near 150th and Noble Ave also may begin to flood.

  4. 1267.00 ft

    Water reaches the bottom of the bridge on 140th Street. The Oyens shooting range may also be flooded.

  5. 1269.00 ft

    Major agricultural flooding begins, the Willow Creek campground sees additional flooding, and water reaches the bottom of the bridge on Pioneer Avenue.

  6. 1271.00 ft

    Pioneer Avenue floods, the levees near 150th Street and Marble Avenue are overtopped, and water reaches the bottom of the bridge on C16.

  7. 1272.00 ft

    150th St bridge begins to be overtopped.

  8. 1274.00 ft

    C16 begins to flood, and water reaches the bottom of the bridge on K64.

  9. 1276.00 ft

    K64 begins to flood and nearby structures may be in danger of flooding.

Written by the local National Weather Service forecast office for this exact gauge.

Frequently asked questions

Is the Willow Creek flooding at Oyens?

No. The Willow Creek at Oyens is at 1253.95 ft, 10.05 ft below action stage.

What is the flood stage at Oyens?

The National Weather Service sets action stage 1264 ft, minor flooding 1266 ft, moderate flooding 1269 ft and major flooding 1271 ft.

What is the highest the Willow Creek has been at Oyens?

The highest crest on record is 1266.94 ft, on 2024-06-22.

Stage and flood information from the NOAA National Weather Service (gauge OYEI4). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.