About this river
San Leandro Creek is a 7.7 mile stream near Sea Trek Kayak and SUP (Alameda) in California. Streamflow is measured at the USGS gauge San Lorenzo C at Hayward CA (site 11181000). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1940 to 2026
San Leandro Creek typically runs highest in March, at a median 14 cfs, and lowest in September, at 0.2 cfs. The highest flow on record for any single day is 2,960 cfs, in 2023.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 7.5 | 1.6 to 36 | |
| February | 14 | 5.1 to 45 | |
| March | 14 | 5.3 to 40 | |
| April | 9.0 | 3.6 to 23 | |
| May | 3.7 | 1.7 to 8.1 | |
| June | 1.4 | 0.5 to 3.3 | |
| July | 0.7 | 0.1 to 1.6 | |
| August | 0.3 | 0.1 to 0.9 | |
| September | 0.2 | 0.0 to 0.6 | |
| October | 0.4 | 0.0 to 1.0 | |
| November | 1.0 | 0.3 to 2.5 | |
| December | 2.3 | 0.9 to 8.7 |
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 66 years of record. Statistics published by the US Geological Survey for San Lorenzo C at Hayward CA (site 11181000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show San Leandro Creek'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.
