How high is the San Marcos Rv near Martindale, TX right now?

The San Marcos Rv near Martindale, TX is currently flowing at 167 cubic feet per second with a gage height of 7.68 feet, based on the most recent USGS instantaneous reading.

Is the flow on the San Marcos Rv near Martindale, TX normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 44th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the San Marcos Rv near Martindale, TX on June 11?

The long-term median discharge for this date is 175 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 94 to unavailable cfs.

Where is the San Marcos Rv near Martindale, TX stream gauge located?

The San Marcos Rv near Martindale, TX stream gauge is operated by the USGS in Caldwell County, TX on the San Marcos River. USGS site number 08171400 (coordinates 29.8323, -97.8424).

San Marcos Rv near Martindale, TX

USGS Site No: 08171400 • San Marcos River • Caldwell County, TX

San Marcos Rv near Martindale, TX on the San Marcos River is currently at 167 cfs (Normal — 44th percentile for this date) . Gage height: 7.68 ft.

Reading from 1 week ago

↑ Upstream on San Marcos River

San Marcos Rv at San Marcos, TX

Downstream on San Marcos River ↓

San Marcos Rv at Luling, TX

167

CFS Discharge

7.68

Gage Height (ft)

Normal

Flow Condition

N/A

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	94
25th	Low threshold	144
50th (Median)	Normal (median)	175	Today: 167 cfs
75th	High threshold	268
95th	Very High threshold	0

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	163	7.66
May 27, 2026	219	7.87
May 26, 2026	155	7.63
May 25, 2026	153	7.62
May 24, 2026	154	7.63
May 23, 2026	158	7.65
May 22, 2026	168	7.68
May 21, 2026	169	7.69
May 20, 2026	198	7.79
May 19, 2026	155	7.63
May 18, 2026	155	7.63
May 17, 2026	154	7.63
May 16, 2026	159	7.65
May 15, 2026	158	7.64
Apr 20, 2026	196	7.77
Apr 19, 2026	159	7.65
Apr 18, 2026	97	7.41
Apr 17, 2026	94	7.40
Apr 16, 2026	87	7.37
Apr 15, 2026	90	7.38
Apr 14, 2026	90	7.38
Apr 13, 2026	96	7.41
Apr 12, 2026	90	7.38
Apr 11, 2026	133	7.55
Apr 10, 2026	85	7.36
Apr 9, 2026	78	7.33
Apr 8, 2026	77	7.33
Apr 7, 2026	80	7.34
Apr 6, 2026	80	7.34
Apr 5, 2026	118	7.49

Station Information

USGS Site No: 08171400
State: TX
County: Caldwell County
Coordinates: 29.8323, -97.8424
Drainage Area: 547 mi²
Datum (ft): 480.3
HUC Code: 12100203

View on USGS NWIS →

Recent Extremes

Max discharge: 309 cfs

May 28, 2025
Min discharge: 76 cfs

Mar 28, 2026

Computed from the local daily-values archive.

Nearby Gauges

Guadalupe Rv above Comal Rv at New Braunfels, TX
18.0 mi · 199 cfs

Normal
Guadalupe Rv at New Braunfels, TX
18.4 mi · 0 cfs

Unknown
Comal Rv at New Braunfels, TX
18.9 mi · 175 cfs

Low
Comal Rv (oc) near Landa Lake, New Braunfels, TX
19.3 mi · 52 cfs

Normal
Comal Rv (nc) near Landa Lake, New Braunfels, TX
19.4 mi · 98 cfs

Normal