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Around North Fork American River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
North Fork American River is a 62.1 mile river near California Watersport Collective in California. Streamflow is measured at the USGS gauge NF American R at North Fork Dam CA (site 11427000). The National Hydrography Dataset places it at stream order 9. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1942 to 2026
North Fork American River typically runs highest in April, at a median 1,420 cfs, and lowest in September, at 47 cfs. The highest flow on record for any single day is 50,100 cfs, in 1997.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 502 | 209 to 1,230 |
| February | 854 | 447 to 1,600 |
| March | 1,160 | 707 to 1,770 |
| April | 1,420 | 938 to 2,015 |
| May | 1,410 | 820 to 2,150 |
| June | 385 | 240 to 1,115 |
| July | 103 | 64 to 218 |
| August | 54 | 40 to 79 |
| September | 47 | 34 to 62 |
| October | 52 | 37 to 69 |
| November | 104 | 66 to 232 |
| December | 238 | 113 to 611 |
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 84 years of record. Statistics published by the US Geological Survey for NF American R at North Fork Dam CA (site 11427000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of North Fork American River. Ramp data comes from the USGS national boat-ramp inventory.
- Folsom Lake Yacht ClubFolsom LakeRestricted
- Folsom Lake MarinaFolsom LakePublic
- Folsom Lake State Recreation Area (Brown's Ravine)Folsom LakePublic
- Sly Park Recreation AreaJenkinson LakePublic
- Jenkinson Lake - Stonebreaker CampJenkinson LakePublic
- Folsom Lake State Recreation Area (Granite Bay)Folsom LakePublic
- Folsom Lake State Recreation Area (Peninsula Old)Folsom LakePublic
- Folsom Lake State Recreation AreaFolsom LakePublic
Made to print
Put North Fork American 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 North Fork American 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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