USGS Streamgage 06077200
Smith River below Eagle Creek near Fort Logan, MT
Smith River below Eagle Creek near Fort Logan, MT is USGS streamgage 06077200 in Montana, monitoring river discharge in hydrologic subbasin 10030103. It sits on the Smith River, alongside 2 other gauges Rivermatics tracks on the same river. It drains a watershed of about 1,087 square miles. Discharge records at this site go back to 1996. Typical flow runs near 166.4 cfs in July and 264.8 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
- 1,087 sq mi
- Gauge elevation
- 4,350 ft
- Subbasin (HUC-8)
- 10030103
- Coordinates
- 46.82798, -111.19224
- USGS site number
- 06077200
- Records begin
- 1996-10-01 (30 years)
- Rivermatics forecast
- 14-day flow outlook + water temperature
14-day flow forecast
Based on observations through for Smith River below Eagle Creek near Fort Logan, 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.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 80.2 | 87 | 96.5 | ||
| 78.1 | 88.3 | 104 | ||
| 76.6 | 87.7 | 104 | ||
| 74.2 | 85.4 | 101 | ||
| 72.3 | 83.8 | 99.4 | ||
| 71.4 | 83.6 | 101 | ||
| 70.2 | 82.9 | 100 | ||
| 68.5 | 81.3 | 98.7 | ||
| 67.4 | 80.9 | 100 | ||
| 67.2 | 80.3 | 98.7 | ||
| 66.1 | 79.2 | 97.6 | ||
| 67.4 | 82.7 | 106 | ||
| 67 | 83.3 | 109 | ||
| 65.3 | 80.5 | 103 |
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 30 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 | 66.7 | 91.5 | 148.6 | |
| February | 66.7 | 99.8 | 161.1 | |
| March | 80.3 | 143.7 | 287.4 | |
| April | 125 | 264.8 | 536 | |
| May | 249.1 | 564.3 | 1,273.9 | |
| June | 224.7 | 481.6 | 1,470.4 | |
| July | 84.3 | 166.4 | 528.5 | |
| August | 46.6 | 86.4 | 193.7 | |
| September | 58.1 | 103.9 | 208.5 | |
| October | 87.9 | 128.1 | 190.7 | |
| November | 74.4 | 120.9 | 182.1 | |
| December | 64 | 97 | 152.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Smith River below Eagle Creek near Fort Logan, MT normally run highest?
- May, on the long-term record. The median daily flow that month is about 564.3 cfs, against 86.4 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Smith River below Eagle Creek near Fort Logan, MT?
- It depends on the month. In January, half of days historically fall near 91.5 cfs, with the middle 80% of days between 66.7 and 148.6 cfs. The month-by-month table on this page gives the full range.
- How long has Smith River below Eagle Creek near Fort Logan, MT been measured?
- Discharge records at USGS site 06077200 begin in 1996, about 30 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 Smith River below Eagle Creek near Fort Logan, 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 Smith River below Eagle Creek near Fort Logan, MT?
- The gauge sits at 46.82798, -111.19224, in Montana, in hydrologic subbasin 10030103, at an elevation of about 4,350 feet, draining roughly 1,087 square miles.
- Can I use Smith River below Eagle Creek near Fort Logan, 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 Smith River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Smith River in full.
- Smith River near Ft Logan, MT 845 sq mi
- Smith River below Eagle Creek near Fort Logan, MT this page
- Smith River near Eden, MT 1,588 sq mi