River Conditions
Illustrated map of Lake McConaughy

River stage

Oacoma, White River

River level
7.83 ft
Status
Below flood stage
7-day change
-0.21 ft
Recent high
9.14 ft
Recent low
7.55 ft

Last reported 2026-10-13 | NWS OACS2

30-day change
-0.11 ft
Average
8.09 ft
Readings
122
Data span
122 days
Record crest
25.02 ft

In brief

The White River at Oacoma, SD read 7.83 ft on Oct 13, 2026, 7.17 ft below action stage. That is 0.11 ft lower than 30 days earlier.

Source: National Weather Service gauge OACS2

River level timeline

7.68.18.58.99.3SEP 13SEP 18SEP 23SEP 28OCT 03OCT 08OCT 13HIGH 9.147.82 ftLAST READING

Stage threshold profile

Action stage 15.00 ftMinor flooding 17.00 ftModerate flooding 20.00 ftMajor flooding 25.00 ft CURRENT 7.83 ft

Highest crests on record

RankCrestDate
1 25.02 ft 2011-03-16
2 24.87 ft 2019-03-19
3 24.70 ft 1994-03-04
4 24.44 ft 2001-03-15
5 23.84 ft 1997-02-20
6 23.59 ft 1978-03-14
7 22.30 ft 1996-02-11
8 21.37 ft 2011-02-18

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

What happens at each level

  1. 16.50 ft

    Water begins to overflow into the trees on the west (right) bank along the river.

  2. 17.00 ft

    Minor flooding of agricultural land both upstream and downstream of the Highway 47 bridge along the west and south banks (right bank) of the White River.

  3. 20.00 ft

    Moderate Flood Stage. Some inundation of outbuildings, structures and roads near the White River are possible.

  4. 22.00 ft

    Moderate flooding continues. Water reaches the bottom of the Highway 47 bridge.

  5. 23.00 ft

    Moderate flooding along the south bank of the White River. Flooding of agricultural land downstream from the bridge along the north bank of the river.

  6. 25.00 ft

    Major Flood Stage. Extensive flooding along the White River with inundation of structures and roads.

  7. 30.00 ft

    Water reaches Highway 47.

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

Frequently asked questions

Is the White River flooding at Oacoma?

No. The White River at Oacoma is at 7.83 ft, 7.17 ft below action stage.

What is the flood stage at Oacoma?

The National Weather Service sets action stage 15 ft, minor flooding 17 ft, moderate flooding 20 ft and major flooding 25 ft.

What is the highest the White River has been at Oacoma?

The highest crest on record is 25.02 ft, on 2011-03-16.

Is the White River high or low right now at Oacoma?

At 7.83 ft it is higher than 29% of readings over the last 122 days.

Stage and flood information from the NOAA National Weather Service (gauge OACS2); daily history from the U.S. Geological Survey (site 06452000). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.