Around here
Around San Antonio River
Temperature from a 1980 federal survey. The record says nothing about access, ownership or current conditions.
Data Source: Recreation.gov · Source: USGS GNIS · Thermal springs: NOAA NCEI (1980) · Public land: USGS PAD-US · Forest roads: USDA Forest Service MVUM · BLM routes and areas: Bureau of Land Management (simplified for web display)
About this river
San Antonio River is a 55.1 mile river. Streamflow is measured at the USGS gauge San Antonio R near Lockwood CA (site 11149900). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1966 to 2026
San Antonio River typically runs highest in March, at a median 115 cfs, and lowest in July, at 0.0 cfs. The highest flow on record for any single day is 14,000 cfs, in 1995.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 68 | 11 to 216 |
| February | 79 | 34 to 349 |
| March | 115 | 39 to 278 |
| April | 54 | 23 to 155 |
| May | 18 | 7.2 to 64 |
| June | 2.7 | 0.0 to 21 |
| July | 0.0 | 0.0 to 2.2 |
| August | 0.0 | 0.0 to 0.0 |
| September | 0.0 | 0.0 to 0.0 |
| October | 0.0 | 0.0 to 0.0 |
| November | 0.0 | 0.0 to 0.0 |
| December | 6.4 | 0.0 to 41 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 61 years of record. Statistics published by the US Geological Survey for San Antonio R near Lockwood CA (site 11149900). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
5 mapped launches sit in the mapped area of San Antonio River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Lake San Antonio Rec. Area; South (Harris Creek)Lake San AntonioPublic
- Lake San Antonio (Lynch Area)Lake San AntonioPublic
- Lake San Antonio Resort and MarinaLake San AntonioPublic
- Lake San Antonio Recreation Area North (Pleyto)Lake San AntonioPublic
- Lake San Antonio Recreation Area North (Store)Lake San AntonioPublic
Made to print
Put San Antonio River on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show San Antonio River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
