USGS Streamgage 08398500
Rio Penasco at Dayton, NM
Rio Penasco at Dayton, NM is USGS streamgage 08398500 in New Mexico, monitoring river discharge in hydrologic subbasin 13060010. It drains a watershed of about 1,060 square miles. Discharge records at this site go back to 1951. Typical flow runs near 0 cfs in July and 0 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- New Mexico
- Drainage area
- 1,060 sq mi
- Gauge elevation
- 3,387 ft
- Subbasin (HUC-8)
- 13060010
- Coordinates
- 32.74345, -104.41413
- USGS site number
- 08398500
- Records begin
- 1951-04-01 (75 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 75 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 | 0 | |
| February | 0 | 0 | 0 | |
| March | 0 | 0 | 0 | |
| April | 0 | 0 | 0 | |
| May | 0 | 0 | 0 | |
| June | 0 | 0 | 0 | |
| July | 0 | 0 | 0 | |
| August | 0 | 0 | 0 | |
| September | 0 | 0 | 0 | |
| October | 0 | 0 | 0 | |
| November | 0 | 0 | 0 | |
| December | 0 | 0 | 0 |
All values in cubic feet per second (cfs).
Common questions
- When does Rio Penasco at Dayton, NM normally run highest?
- January, on the long-term record. The median daily flow that month is about 0 cfs, against 0 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Rio Penasco at Dayton, NM?
- It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 0 cfs. The month-by-month table on this page gives the full range.
- How long has Rio Penasco at Dayton, NM been measured?
- Discharge records at USGS site 08398500 begin in 1951, about 75 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 Rio Penasco at Dayton, NM?
- The gauge sits at 32.74345, -104.41413, in New Mexico, in hydrologic subbasin 13060010, at an elevation of about 3,387 feet, draining roughly 1,060 square miles.
- Can I use Rio Penasco at Dayton, 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.