USGS Streamgage 08382500
Gallinas River near Colonias, NM
Gallinas River near Colonias, NM is USGS streamgage 08382500 in New Mexico, monitoring river discharge in hydrologic subbasin 13060001. It drains a watershed of about 610 square miles. Discharge records at this site go back to 1937. Typical flow runs near 2.3 cfs in July and 0 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- New Mexico
- Drainage area
- 610 sq mi
- Gauge elevation
- 4,940 ft
- Subbasin (HUC-8)
- 13060001
- Coordinates
- 35.18196, -104.90027
- USGS site number
- 08382500
- Records begin
- 1937-06-01 (89 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 76 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 | 1 | 9.8 | |
| February | 0 | 0.8 | 9.7 | |
| March | 0 | 0.1 | 10.7 | |
| April | 0 | 0 | 15.3 | |
| May | 0 | 0 | 33.3 | |
| June | 0 | 0 | 34.5 | |
| July | 0 | 2.3 | 69.4 | |
| August | 0 | 8.3 | 158.3 | |
| September | 0 | 2.6 | 51 | |
| October | 0 | 0.6 | 18.6 | |
| November | 0 | 2.5 | 13.4 | |
| December | 0 | 2 | 10.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Gallinas River near Colonias, NM normally run highest?
- August, on the long-term record. The median daily flow that month is about 8.3 cfs, against 0 cfs in April, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Gallinas River near Colonias, NM?
- It depends on the month. In January, half of days historically fall near 1 cfs, with the middle 80% of days between 0 and 9.8 cfs. The month-by-month table on this page gives the full range.
- How long has Gallinas River near Colonias, NM been measured?
- Discharge records at USGS site 08382500 begin in 1937, about 89 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 Gallinas River near Colonias, NM?
- The gauge sits at 35.18196, -104.90027, in New Mexico, in hydrologic subbasin 13060001, at an elevation of about 4,940 feet, draining roughly 610 square miles.
- Can I use Gallinas River near Colonias, 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.