Around here
Around Delta-Mendota Canal
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Delta-Mendota Canal is a 61.7 mile stream near O'Neill Forebay Rentals in California. Streamflow is measured at the USGS gauge Del Puerto C near Patterson CA (site 11274630). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1965 to 2026
Delta-Mendota Canal typically runs highest in March, at a median 4.8 cfs, and lowest in July, at 0.0 cfs. The highest flow on record for any single day is 1,870 cfs, in 1998.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 2.4 | 0.8 to 9.5 |
| February | 3.8 | 1.5 to 22 |
| March | 4.8 | 1.3 to 22 |
| April | 3.0 | 0.7 to 12 |
| May | 0.7 | 0.1 to 4.8 |
| June | 0.1 | 0.0 to 1.4 |
| July | 0.0 | 0.0 to 0.0 |
| 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 | 0.0 | 0.0 to 1.8 |
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 Del Puerto C near Patterson CA (site 11274630). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
7 mapped launches sit in the mapped area of Delta-Mendota Canal, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- San Luis Reservoir State Recreation Area - Los Banos CreekSan Luis ReservoirPublic
- San Luis Reservoir State Recreation AreaSan Luis ReservoirPublic
- San Luis Reservoir State Recreation AreaSan Luis ReservoirPublic
- Medeiros Boat San Luis Reservoir, O'Neill ForebaySan Luis Reservoir - O'Neill ForebayPublic
- San Luis Reservoir State Recreation AreaSan Luis ReservoirPublic
- Great Valley Grasslands State ParkSan Joaquin RiverPublic
- Las Palmas - San Joaquin RiverSan Joaquin RiverPublic
Made to print
Put Delta-Mendota Canal 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 Delta-Mendota Canal'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.
