River Conditions
Illustrated map of Grand Lake

River stage

San Marcial, Rio Grande

River level
13.40 ft
Status
Below flood stage
7-day change
-1.37 ft
Recent high
16.61 ft
Recent low
11.13 ft

Last reported 2026-10-13 | NWS SMFN5

30-day change
+2.26 ft
Average
11.91 ft
Readings
113
Data span
113 days
Record crest
22.30 ft

In brief

The Rio Grande at San Marcial, NM read 13.40 ft on Oct 13, 2026, 11.10 ft below action stage. That is 2.26 ft higher than 30 days earlier.

Source: National Weather Service gauge SMFN5

River level timeline

10.412.113.915.617.4SEP 13SEP 18SEP 23SEP 28OCT 03OCT 08OCT 13HIGH 16.61LOW 11.1313.53 ftLAST READING

Stage threshold profile

Action stage 24.50 ftMinor flooding 24.50 ftModerate flooding 26.00 ftMajor flooding 27.50 ft CURRENT 13.40 ft

Highest crests on record

RankCrestDate
1 22.30 ft 2006-08-12
2 21.70 ft 1994-05-28
3 21.43 ft 1980-09-16
4 21.40 ft 2005-06-07
5 21.26 ft 2008-08-28
6 21.25 ft 1995-05-29
7 19.40 ft 1985-05-11
8 17.94 ft 1984-06-08

Flood crests recorded at this gauge by the National Weather Service.

What happens at each level

  1. 23.00 ft

    The Rio Grande is near to above bankfull and the railroad bridge just north of the river gauge may become inundated if further river rises occur.

  2. 24.50 ft

    Some overbank flooding is in progress. The railroad bridge just above the river gauge may already be impassable.

  3. 26.00 ft

    Significant overbank flooding is occurring as this is the most water this stretch of the Rio Grande has seen since the great flood of 1904. The railroad bridge just above the river gauge site is likely under water.

Written by the local National Weather Service forecast office for this exact gauge.

Frequently asked questions

Is the Rio Grande flooding at San Marcial?

No. The Rio Grande at San Marcial is at 13.4 ft, 11.1 ft below action stage.

What is the flood stage at San Marcial?

The National Weather Service sets action stage 24.5 ft, minor flooding 24.5 ft, moderate flooding 26 ft and major flooding 27.5 ft.

What is the highest the Rio Grande has been at San Marcial?

The highest crest on record is 22.3 ft, on 2006-08-12.

Is the Rio Grande high or low right now at San Marcial?

At 13.4 ft it is higher than 81% of readings over the last 113 days.

Stage and flood information from the NOAA National Weather Service (gauge SMFN5); daily history from the U.S. Geological Survey (site 08358400). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.