Rivermatics

USGS Streamgage 06601200

Missouri River at Decatur, NE

Missouri River at Decatur, NE is USGS streamgage 06601200 in Iowa, monitoring river discharge in hydrologic subbasin 10230001. It sits on the Missouri River, alongside 51 other gauges Rivermatics tracks on the same river. It drains a watershed of about 316,200 square miles. Discharge records at this site go back to 1987. Typical flow runs near 32,619.4 cfs in July and 30,573.3 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

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Gauge details

State
Iowa
Drainage area
316,200 sq mi
Gauge elevation
1,045 ft
Subbasin (HUC-8)
10230001
Coordinates
42.00783, -96.24292
USGS site number
06601200
Records begin
1987-10-01 (39 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Missouri River at Decatur, NE. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
28,923 29,479 30,022
28,393 29,280 30,123
27,786 29,043 30,252
27,387 28,856 30,571
27,030 28,747 30,639
26,939 28,740 31,037
26,964 28,889 31,485
27,125 29,132 32,614
27,076 29,302 33,791
26,980 29,319 34,067
26,856 29,268 33,888
26,721 29,203 33,711
26,568 29,142 33,558
26,413 29,025 33,360

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 39 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 13,841.9 17,132.3 26,883.9
February 13,382.8 17,651.7 30,517.2
March 14,683.9 22,625.8 43,883.9
April 23,850 30,573.3 55,460
May 25,022.6 32,209.7 55,332.3
June 26,746.7 33,753.3 65,483.3
July 26,377.4 32,619.4 66,348.4
August 26,112.9 32,241.9 65,038.7
September 26,750 33,066.7 66,796.7
October 20,890.3 32,567.7 63,745.2
November 11,830 29,870 59,060
December 13,329 17,567.7 35,154.8

All values in cubic feet per second (cfs).

Common questions

When does Missouri River at Decatur, NE normally run highest?
June, on the long-term record. The median daily flow that month is about 33,753.3 cfs, against 17,132.3 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Missouri River at Decatur, NE?
It depends on the month. In January, half of days historically fall near 17,132.3 cfs, with the middle 80% of days between 13,841.9 and 26,883.9 cfs. The month-by-month table on this page gives the full range.
How long has Missouri River at Decatur, NE been measured?
Discharge records at USGS site 06601200 begin in 1987, about 39 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Missouri River at Decatur, NE?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Missouri River at Decatur, NE?
The gauge sits at 42.00783, -96.24292, in Iowa, in hydrologic subbasin 10230001, at an elevation of about 1,045 feet, draining roughly 316,200 square miles.
Can I use Missouri River at Decatur, NE data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Missouri River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Missouri River in full.

Other gauges in this subbasin