USGS Streamgage 08395500
Pecos River near Lake Arthur, NM
Pecos River near Lake Arthur, NM is USGS streamgage 08395500 in New Mexico, monitoring river discharge in hydrologic subbasin 13060007. It drains a watershed of about 14,760 square miles. Discharge records at this site go back to 1937. Typical flow runs near 90.9 cfs in July and 59.5 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- New Mexico
- Drainage area
- 14,760 sq mi
- Gauge elevation
- 3,329 ft
- Subbasin (HUC-8)
- 13060007
- Coordinates
- 32.98863, -104.32396
- USGS site number
- 08395500
- Records begin
- 1937-05-30 (89 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 88 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 | 43.3 | 74.6 | 143.5 | |
| February | 37 | 72.4 | 140.2 | |
| March | 24.5 | 67.6 | 541.9 | |
| April | 20.5 | 59.5 | 631.9 | |
| May | 16.4 | 57.1 | 821.6 | |
| June | 6.4 | 63.8 | 891.1 | |
| July | 6.6 | 90.9 | 862.4 | |
| August | 5.3 | 74.7 | 816.8 | |
| September | 10.4 | 76.6 | 771.1 | |
| October | 22 | 79.8 | 373.7 | |
| November | 40.1 | 79.5 | 174.4 | |
| December | 42.7 | 74.3 | 142 |
All values in cubic feet per second (cfs).
Common questions
- When does Pecos River near Lake Arthur, NM normally run highest?
- July, on the long-term record. The median daily flow that month is about 90.9 cfs, against 57.1 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 Pecos River near Lake Arthur, NM?
- It depends on the month. In January, half of days historically fall near 74.6 cfs, with the middle 80% of days between 43.3 and 143.5 cfs. The month-by-month table on this page gives the full range.
- How long has Pecos River near Lake Arthur, NM been measured?
- Discharge records at USGS site 08395500 begin in 1937, about 89 years, covering roughly 9,121 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Pecos River near Lake Arthur, NM?
- The gauge sits at 32.98863, -104.32396, in New Mexico, in hydrologic subbasin 13060007, at an elevation of about 3,329 feet, draining roughly 14,760 square miles.
- Can I use Pecos River near Lake Arthur, 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.