USGS Streamgage 10127100
Black Slough near Brigham City, Utah
Black Slough near Brigham City, Utah is USGS streamgage 10127100 in Utah, monitoring river discharge in hydrologic subbasin 16010204. It drains a watershed of about 31 square miles. Discharge records at this site go back to 1971. Typical flow runs near 14.8 cfs in July and 76.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Utah
- Drainage area
- 31 sq mi
- Gauge elevation
- 4,210 ft
- Subbasin (HUC-8)
- 16010204
- Coordinates
- 41.50993, -112.07689
- USGS site number
- 10127100
- Records begin
- 1971-10-01 (55 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 15 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 | 31.9 | 55.6 | 115 | |
| February | 39.8 | 67.2 | 158.1 | |
| March | 44.2 | 101.7 | 197.9 | |
| April | 28.1 | 76.8 | 161.3 | |
| May | 9.9 | 44.4 | 144 | |
| June | 7.4 | 20.8 | 85.4 | |
| July | 6.5 | 14.8 | 40.4 | |
| August | 7.5 | 18.5 | 54.8 | |
| September | 15.2 | 34 | 78.8 | |
| October | 28 | 46.1 | 136.4 | |
| November | 34.9 | 47.2 | 108.5 | |
| December | 32.6 | 49.5 | 144.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Black Slough near Brigham City, Utah normally run highest?
- March, on the long-term record. The median daily flow that month is about 101.7 cfs, against 14.8 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Black Slough near Brigham City, Utah?
- It depends on the month. In January, half of days historically fall near 55.6 cfs, with the middle 80% of days between 31.9 and 115 cfs. The month-by-month table on this page gives the full range.
- How long has Black Slough near Brigham City, Utah been measured?
- Discharge records at USGS site 10127100 begin in 1971, about 55 years. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Black Slough near Brigham City, Utah?
- The gauge sits at 41.50993, -112.07689, in Utah, in hydrologic subbasin 16010204, at an elevation of about 4,210 feet, draining roughly 31 square miles.
- Can I use Black Slough near Brigham City, Utah 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.