Rio Grande above US Hwy 380 near San Antonio, NM

Gauge details

State

New Mexico

Drainage area

28,435 sq mi

Gauge elevation

4,521 ft

Subbasin (HUC-8)

13020203

Coordinates

33.92667, -106.85117

USGS site number

08355490

Records begin

2005-09-30 (21 years)

Rivermatics forecast

14-day flow outlook

14-day flow forecast

Based on observations through September 16 for Rio Grande above US Hwy 380 near San Antonio, NM. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 15 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

All values in cubic feet per second (cfs).

Common questions

When does Rio Grande above US Hwy 380 near San Antonio, NM normally run highest?

May, on the long-term record. The median daily flow that month is about 856.2 cfs, against 22.7 cfs in September, 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 Grande above US Hwy 380 near San Antonio, NM?

It depends on the month. In January, half of days historically fall near 605.5 cfs, with the middle 80% of days between 377.6 and 775.4 cfs. The month-by-month table on this page gives the full range.

How long has Rio Grande above US Hwy 380 near San Antonio, NM been measured?

Discharge records at USGS site 08355490 begin in 2005, about 21 years, covering roughly 6,538 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.

Is there a flow forecast for Rio Grande above US Hwy 380 near San Antonio, NM?

Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.

Where is Rio Grande above US Hwy 380 near San Antonio, NM?

The gauge sits at 33.92667, -106.85117, in New Mexico, in hydrologic subbasin 13020203, at an elevation of about 4,521 feet, draining roughly 28,435 square miles.

Can I use Rio Grande above US Hwy 380 near San Antonio, 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.

Upstream and downstream on the Rio Grande

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Rio Grande in full.

• Rio Grande near Lobatos, CO 7,700 sq mi
• Rio Grande near Cerro, NM 8,440 sq mi
• Rio Grande below Taos Junction Bridge near Taos, NM 9,730 sq mi
• Rio Grande at Embudo, NM 10,400 sq mi
• Rio Grande at Valle de Oro, NM 13,100 sq mi
• Rio Grande at Otowi Bridge, NM 14,300 sq mi
• Rio Grande below Cochiti Dam, NM 14,900 sq mi
• Rio Grande near Alameda, NM 17,210 sq mi
• Rio Grande at Albuquerque, NM 17,440 sq mi
• Rio Grande at Isleta Lakes near Isleta, NM 17,666 sq mi
• Rio Grande near Bosque Farms, NM 17,718 sq mi
• Rio Grande at State Hwy 346 near Bosque, NM 18,406 sq mi
• Rio Grande at Bridge near Escondida, NM 28,068 sq mi
• Rio Grande above US Hwy 380 near San Antonio, NM this page
• Rio Grande at Narrows In Elephant Butte Reservoir., NM 28,500 sq mi
• Rio Grande below Elephant Butte Dam, NM 29,450 sq mi
• Rio Grande at El Paso, TX 32,210 sq mi
• Rio Grande at Rio Grande Village, Big Bnd NP, TX
• Rio Grande below Leasburg Dam at Fort Selden, NM
• Rio Grande near Castolon, TX

Other gauges in this subbasin

• Rio Grande Conveyance Channel at San Marcial, NM
• Rio Grande Floodway at San Marcial, NM
• Campus Wash at Albuquerque, NM
• Embudo Arroyo at Albuquerque, NM
• N. Floodway Channel at Albuquerque, NM
• Hahn Arroyo In Albuquerque, NM
• North Pino Arroyo Outfall
• North Floodway Channel near Alameda, NM