Rivermatics

USGS Streamgage 06066500

Missouri River below Holter Dam near Wolf Creek, MT

Missouri River below Holter Dam near Wolf Creek, MT is USGS streamgage 06066500 in Montana, monitoring river discharge in hydrologic subbasin 10030102. It sits on the Missouri River, alongside 51 other gauges Rivermatics tracks on the same river. It drains a watershed of about 16,924 square miles. Discharge records at this site go back to 1945. Typical flow runs near 4,902.3 cfs in July and 4,946.3 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead, alongside daily high and low water-temperature forecasts.

View live conditions & forecast →

Gauge details

State
Montana
Drainage area
16,924 sq mi
Gauge elevation
3,470 ft
Subbasin (HUC-8)
10030102
Coordinates
46.99474, -112.01067
USGS site number
06066500
Records begin
1945-10-01 (81 years)
Rivermatics forecast
14-day flow outlook + water temperature

14-day flow forecast

Based on observations through for Missouri River below Holter Dam near Wolf Creek, MT. 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
3,666 3,745 3,821
3,598 3,726 3,841
3,546 3,696 3,857
3,494 3,671 3,871
3,448 3,648 3,880
3,406 3,626 3,877
3,374 3,619 3,908
3,339 3,604 3,935
3,304 3,589 3,946
3,272 3,571 3,945
3,238 3,548 3,933
3,206 3,530 3,940
3,181 3,515 3,952
3,156 3,496 3,948

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 81 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 3,465.2 4,791.3 6,212.6
February 3,450 4,666.2 6,333.4
March 3,291.3 4,645.5 6,869.7
April 3,128.7 4,946.3 8,316
May 2,917.7 5,668.7 12,128.4
June 2,924 6,844.3 16,453.3
July 2,881.9 4,902.3 10,138.4
August 2,919 4,063.9 6,090.3
September 2,925 4,047 5,905.3
October 3,009.7 4,111.3 5,861.3
November 3,120.7 4,437.3 6,013
December 3,292.9 4,731.6 6,021.3

All values in cubic feet per second (cfs).

Common questions

When does Missouri River below Holter Dam near Wolf Creek, MT normally run highest?
June, on the long-term record. The median daily flow that month is about 6,844.3 cfs, against 4,047 cfs in September, 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 below Holter Dam near Wolf Creek, MT?
It depends on the month. In January, half of days historically fall near 4,791.3 cfs, with the middle 80% of days between 3,465.2 and 6,212.6 cfs. The month-by-month table on this page gives the full range.
How long has Missouri River below Holter Dam near Wolf Creek, MT been measured?
Discharge records at USGS site 06066500 begin in 1945, about 81 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 below Holter Dam near Wolf Creek, MT?
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. A companion model forecasts each day's water-temperature high and low. 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 below Holter Dam near Wolf Creek, MT?
The gauge sits at 46.99474, -112.01067, in Montana, in hydrologic subbasin 10030102, at an elevation of about 3,470 feet, draining roughly 16,924 square miles.
Can I use Missouri River below Holter Dam near Wolf Creek, MT 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