USGS Streamgage 06177500
Redwater River at Circle, MT
Redwater River at Circle, MT is USGS streamgage 06177500 in Montana, monitoring river discharge in hydrologic subbasin 10060002. It drains a watershed of about 551 square miles. Discharge records at this site go back to 1929. Typical flow runs near 0.3 cfs in July and 2.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 551 sq mi
- Gauge elevation
- 2,405 ft
- Subbasin (HUC-8)
- 10060002
- Coordinates
- 47.41397, -105.57564
- USGS site number
- 06177500
- Records begin
- 1929-04-01 (97 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 96 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 | 0.1 | 1.4 | |
| February | 0 | 0.3 | 14.8 | |
| March | 0.2 | 4 | 127.8 | |
| April | 0.4 | 2.8 | 20.2 | |
| May | 0.2 | 1.4 | 10 | |
| June | 0.1 | 0.9 | 14.7 | |
| July | 0 | 0.3 | 10.4 | |
| August | 0 | 0.1 | 2.7 | |
| September | 0 | 0.1 | 1.1 | |
| October | 0 | 0.1 | 1.1 | |
| November | 0 | 0.1 | 1.4 | |
| December | 0 | 0.1 | 1.7 |
All values in cubic feet per second (cfs).
Common questions
- When does Redwater River at Circle, MT normally run highest?
- March, on the long-term record. The median daily flow that month is about 4 cfs, against 0.1 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 Redwater River at Circle, MT?
- It depends on the month. In January, half of days historically fall near 0.1 cfs, with the middle 80% of days between 0 and 1.4 cfs. The month-by-month table on this page gives the full range.
- How long has Redwater River at Circle, MT been measured?
- Discharge records at USGS site 06177500 begin in 1929, about 97 years, covering roughly 7,341 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Redwater River at Circle, MT?
- The gauge sits at 47.41397, -105.57564, in Montana, in hydrologic subbasin 10060002, at an elevation of about 2,405 feet, draining roughly 551 square miles.
- Can I use Redwater River at Circle, 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.