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Medina River — San Antonio Natural Area: River Level Today — Can You Paddle It?

Class I5 mi · ~3 hrMedina RiverTexas

Verdict · updated Aug 25, 2:15 AM UTC

Good to paddle

Levels are within the typical runnable range for this section.

Estimated range

48 cfs

2.9 ft gauge height

USGS gauge 08181500

Runnable 301,200 cfs

48 cfs, within the runnable range of 30 to 1,200 cfs
0301,2001,434

What this means today

At 48 cfs the Medina River is inside the runnable range but only 18 cfs above the 30 cfs floor, so it is sitting at the shallow end of what this reach runs at. A dry few days would take it under.

Over the last 24 hours it has gone from 64 cfs to 48 cfs, 26% down. Daily means over the past 7 days have run between 53 cfs and 67 cfs, 14% higher at the end of the week than the start. The last day and the week as a whole point opposite ways, which usually means a recent rain bump on top of a longer rising trend — worth a second look at the chart before you commit to the drive.

Paddling San Antonio Natural Area

Medina River at San Antonio Natural Area is a 5-mile Class I run in Texas — easygoing moving water with light riffles and nothing technical. Most paddlers put in at Medina River Natural Area, San Antonio and take out at Applewhite Rd, a trip that runs about 3 hours at a relaxed pace.

Whether it's worth the drive comes down to flow. This section generally paddles well at 30–1,200 cfs (a conservative estimate — see our methodology). Much below that and the Medina River gets low and bony, so you end up scraping gravel and walking the shallows; well above the top of the range it turns fast, cold and pushy, which is a more serious day than most casual boaters want. We read USGS gauge 08181500 about every 30 minutes and compare the live number to that window, so the verdict at the top of this page reflects conditions right now rather than a monthly average.

This reach can run year-round in a typical year, though levels still swing with rain and dry spells — the live gauge always beats the calendar, so check today's reading before you load the car.

7-day flow trend

1,200301,31702026-08-17Today
Daily mean flow (cfs), past 7 days. Shaded band = runnable range.

Section facts

Difficulty
Class I
Length
5 mi
Float time
~3 hr
Best months
Year-round
Put-in
Medina River Natural Area, San Antonio
Take-out
Applewhite Rd

Reading USGS gauge 08181500 — Medina Rv at San Antonio, TX · runnable range is an estimate (see methodology)

FAQ

What water level is good for paddling Medina River — San Antonio Natural Area?
This section is generally runnable at 30–1,200 cfs (a conservative estimate — see our methodology). Below that it gets too low and bony; well above the top of the range it becomes pushy and then dangerous. We compare the live USGS reading to that range to produce today's verdict.
How do I check Medina River levels?
We read USGS gauge 08181500 — the same public data USGS publishes — about every 30 minutes and compare it to the runnable range for this reach. You can also view the raw gauge yourself at waterdata.usgs.gov.
Is Medina River — San Antonio Natural Area good for beginners?
This section is rated Class I. At good levels it suits confident beginners and up, but it can have riffles or small rapids. Scout anything you can't see, and stay off it at high water.
When is the best time to paddle Medina River here?
Typically Year-round, when flows are most reliable for this section. Spring can run high after rain or snowmelt; late summer can drop too low. Always check today's gauge reading rather than assuming.
How long does it take to float Medina River — San Antonio Natural Area?
This reach is about 5 miles, roughly 3 hours at a relaxed pace. Higher water is faster; low water and headwinds are slower. Add time for stops.

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