USGS Streamgage 08393300
Rocky Arroyo below Rocky Dam, NM
Rocky Arroyo below Rocky Dam, NM is USGS streamgage 08393300 in New Mexico, monitoring river discharge in hydrologic subbasin 13060008. It drains a watershed of about 65 square miles. Discharge records at this site go back to 1963. 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
- 65 sq mi
- Gauge elevation
- 3,939 ft
- Subbasin (HUC-8)
- 13060008
- Coordinates
- 33.26621, -104.70219
- USGS site number
- 08393300
- Records begin
- 1963-05-01 (63 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 18 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 | 10.8 | |
| July | 0 | 0 | 7.1 | |
| August | 0 | 0 | 12.5 | |
| September | 0 | 0 | 26.4 | |
| October | 0 | 0 | 3.8 | |
| November | 0 | 0 | 0 | |
| December | 0 | 0 | 11.4 |
All values in cubic feet per second (cfs).
Common questions
- When does Rocky Arroyo below Rocky Dam, 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 Rocky Arroyo below Rocky Dam, 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 Rocky Arroyo below Rocky Dam, NM been measured?
- Discharge records at USGS site 08393300 begin in 1963, about 63 years, covering roughly 640 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Rocky Arroyo below Rocky Dam, NM?
- The gauge sits at 33.26621, -104.70219, in New Mexico, in hydrologic subbasin 13060008, at an elevation of about 3,939 feet, draining roughly 65 square miles.
- Can I use Rocky Arroyo below Rocky 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.