USGS Streamgage 06166000
Beaver Creek below Guston Coulee near Saco, MT
Beaver Creek below Guston Coulee near Saco, MT is USGS streamgage 06166000 in Montana, monitoring river discharge in hydrologic subbasin 10050014. It sits on the Beaver Creek, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 1,199 square miles. Discharge records at this site go back to 1920. Typical flow runs near 1.9 cfs in July and 3.1 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 1,199 sq mi
- Gauge elevation
- 2,216 ft
- Subbasin (HUC-8)
- 10050014
- Coordinates
- 48.35678, -107.58219
- USGS site number
- 06166000
- Records begin
- 1920-04-01 (106 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 44 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | — | 0 | — | |
| February | — | 2.9 | — | |
| March | 0 | 4.3 | 160.5 | |
| April | 0 | 3.1 | 124.4 | |
| May | 0 | 7 | 199.6 | |
| June | 0.2 | 15.6 | 268.2 | |
| July | 0 | 1.9 | 104.3 | |
| August | 0 | 1.9 | 27.6 | |
| September | 0 | 0.8 | 20.6 | |
| October | 0 | 0 | 28.3 | |
| November | — | 0.3 | — | |
| December | — | 0 | — |
All values in cubic feet per second (cfs).
Common questions
- When does Beaver Creek below Guston Coulee near Saco, MT normally run highest?
- June, on the long-term record. The median daily flow that month is about 15.6 cfs, against 0 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 Beaver Creek below Guston Coulee near Saco, MT?
- It depends on the month. In March, half of days historically fall near 4.3 cfs, with the middle 80% of days between 0 and 160.5 cfs. The month-by-month table on this page gives the full range.
- How long has Beaver Creek below Guston Coulee near Saco, MT been measured?
- Discharge records at USGS site 06166000 begin in 1920, about 106 years, covering roughly 6,140 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Beaver Creek below Guston Coulee near Saco, MT?
- The gauge sits at 48.35678, -107.58219, in Montana, in hydrologic subbasin 10050014, at an elevation of about 2,216 feet, draining roughly 1,199 square miles.
- Can I use Beaver Creek below Guston Coulee near Saco, 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 Beaver Creek
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Beaver Creek in full.
- Beaver Creek below Guston Coulee near Saco, MT this page
- Beaver Creek near Hinsdale, MT 1,805 sq mi