About this river
North Fork San Gabriel River is a 12.4 mile river near Lake Travis Boat Rentals in Texas. Streamflow is measured at the USGS gauge N Fk San Gabriel Rv nr Georgetown, TX (site 08104700). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1980 to 2026
North Fork San Gabriel River typically runs highest in June, at a median 5.4 cfs, and lowest in October, at 2.9 cfs. The highest flow on record for any single day is 4,500 cfs, in 1981.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 4.0 | 1.1 to 11 | |
| February | 4.5 | 1.2 to 39 | |
| March | 4.5 | 1.1 to 75 | |
| April | 4.7 | 0.9 to 36 | |
| May | 4.5 | 0.9 to 27 | |
| June | 5.4 | 0.9 to 42 | |
| July | 4.7 | 1.1 to 12 | |
| August | 3.5 | 1.2 to 6.1 | |
| September | 3.7 | 1.2 to 5.8 | |
| October | 2.9 | 1.2 to 6.0 | |
| November | 3.8 | 1.5 to 8.6 | |
| December | 3.9 | 1.4 to 11 |
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 47 years of record. Statistics published by the US Geological Survey for N Fk San Gabriel Rv nr Georgetown, TX (site 08104700). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
3 mapped launches sit in the mapped area of North Fork San Gabriel River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show North Fork San Gabriel River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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