USGS Streamgage 09386950
Zuni River above Black Rock Reservoir, NM
Zuni River above Black Rock Reservoir, NM is USGS streamgage 09386950 in New Mexico, monitoring river discharge in hydrologic subbasin 15020004. It drains a watershed of about 848 square miles. Discharge records at this site go back to 1969. Typical flow runs near 0 cfs in July and 0.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- New Mexico
- Drainage area
- 848 sq mi
- Gauge elevation
- 6,480 ft
- Subbasin (HUC-8)
- 15020004
- Coordinates
- 35.10028, -108.75167
- USGS site number
- 09386950
- Records begin
- 1969-10-01 (57 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 57 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 | 0.7 | 2.5 | |
| February | 0 | 1 | 11 | |
| March | 0 | 0.9 | 85.6 | |
| April | 0 | 0.5 | 59.9 | |
| May | 0 | 0 | 5.5 | |
| June | 0 | 0 | 0.2 | |
| July | 0 | 0 | 3.2 | |
| August | 0 | 0 | 9.3 | |
| September | 0 | 0 | 3 | |
| October | 0 | 0 | 1.5 | |
| November | 0 | 0.1 | 2 | |
| December | 0 | 0.4 | 1.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Zuni River above Black Rock Reservoir, NM normally run highest?
- February, on the long-term record. The median daily flow that month is about 1 cfs, against 0 cfs in May, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Zuni River above Black Rock Reservoir, NM?
- It depends on the month. In January, half of days historically fall near 0.7 cfs, with the middle 80% of days between 0 and 2.5 cfs. The month-by-month table on this page gives the full range.
- How long has Zuni River above Black Rock Reservoir, NM been measured?
- Discharge records at USGS site 09386950 begin in 1969, about 57 years, covering roughly 9,126 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Zuni River above Black Rock Reservoir, NM?
- The gauge sits at 35.10028, -108.75167, in New Mexico, in hydrologic subbasin 15020004, at an elevation of about 6,480 feet, draining roughly 848 square miles.
- Can I use Zuni River above Black Rock Reservoir, NM 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.