Santa Ana River in California
Around here
Around Santa Ana River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Santa Ana River is a 62.1 mile river. Streamflow is measured at the USGS gauge Santa Ana R below Prado Dam CA (site 11074000). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1941 to 2026
Santa Ana River typically runs highest in March, at a median 239 cfs, and lowest in August, at 78 cfs. The highest flow on record for any single day is 11,400 cfs, in 2005.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 220 | 110 to 362 |
| February | 225 | 122 to 376 |
| March | 239 | 123 to 400 |
| April | 185 | 94 to 333 |
| May | 140 | 74 to 245 |
| June | 120 | 62 to 201 |
| July | 91 | 47 to 176 |
| August | 78 | 45 to 136 |
| September | 86 | 51 to 137 |
| October | 96 | 58 to 164 |
| November | 126 | 77 to 193 |
| December | 181 | 94 to 278 |
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 86 years of record. Statistics published by the US Geological Survey for Santa Ana R below Prado Dam CA (site 11074000). 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 Santa Ana River. Ramp data comes from the USGS national boat-ramp inventory.
- Lake Elsinore West Marina & RV ParkLake ElsinoreRestricted
- Lake Elsinore Recreation AreaLake ElsinorePublic
- Diamond Valley MarinaDiamond Valley LakePublic
- Diamond Valley LakeDiamond Valley LakePublic
- Lake Perris (Bernasconi Pass)Lake PerrisPublic
- Lake Perris State Recreation AreaLake PerrisPublic
- Lake Perris State Recreation AreaLake PerrisPublic
- Lake Perris State Recreation AreaLake PerrisPublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Santa Ana 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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