USGS Streamgage 08384500
Pecos River below Sumner Dam, NM
Pecos River below Sumner Dam, NM is USGS streamgage 08384500 in New Mexico, monitoring river discharge in hydrologic subbasin 13060003. It drains a watershed of about 4,390 square miles. Discharge records at this site go back to 1912. Typical flow runs near 98.9 cfs in July and 93.4 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- New Mexico
- Drainage area
- 4,390 sq mi
- Gauge elevation
- 4,145 ft
- Subbasin (HUC-8)
- 13060003
- Coordinates
- 34.60406, -104.38792
- USGS site number
- 08384500
- Records begin
- 1912-10-01 (114 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 90 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 | 0.2 | 4.2 | 62.3 | |
| February | 0.3 | 5.6 | 87.1 | |
| March | 20 | 85.4 | 786.4 | |
| April | 63.4 | 93.4 | 832.1 | |
| May | 66 | 98.5 | 1,072.5 | |
| June | 71.2 | 105.2 | 1,212 | |
| July | 65.6 | 98.9 | 1,056.3 | |
| August | 67.2 | 100 | 1,026.2 | |
| September | 57.6 | 94.3 | 602.7 | |
| October | 38.8 | 88 | 110.3 | |
| November | 0.2 | 2.4 | 48.8 | |
| December | 0.2 | 3.3 | 31.7 |
All values in cubic feet per second (cfs).
Common questions
- When does Pecos River below Sumner Dam, NM normally run highest?
- June, on the long-term record. The median daily flow that month is about 105.2 cfs, against 2.4 cfs in November, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Pecos River below Sumner Dam, NM?
- It depends on the month. In January, half of days historically fall near 4.2 cfs, with the middle 80% of days between 0.2 and 62.3 cfs. The month-by-month table on this page gives the full range.
- How long has Pecos River below Sumner Dam, NM been measured?
- Discharge records at USGS site 08384500 begin in 1912, about 114 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 Pecos River below Sumner Dam, NM?
- The gauge sits at 34.60406, -104.38792, in New Mexico, in hydrologic subbasin 13060003, at an elevation of about 4,145 feet, draining roughly 4,390 square miles.
- Can I use Pecos River below Sumner Dam, 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.