Sacramento River at Freeport, CA
USGS gauge 11447650 · drainage 0.00 sq mi · observed Oct 16, 6:15 PM PDT · 65 min old
Last 7 days Live gauge
Source: USGS Water Data API (continuous values), observed to Oct 16, 6:15 PM PDT. Shaded band: 25th to 75th percentile of USGS daily statistics for each date; dashed: median. Flow in cfs.
Rate of rise and fall Live gauge
| Window | Flow then | Change to latest | Gage height then | Gage height change |
|---|---|---|---|---|
| 1 h | 8,990 cfs | ▼ -1,640 cfs (-18.2%) | 103.79 ft | +0.17 ft |
| 3 h | 9,630 cfs | ▼ -2,280 cfs (-23.7%) | 103.81 ft | +0.15 ft |
| 6 h | 6,290 cfs | ▲ +1,060 cfs (+16.9%) | 103.89 ft | +0.07 ft |
| 12 h | 13,400 cfs | ▼ -6,050 cfs (-45.1%) | 102.86 ft | +1.10 ft |
| 24 h | 6,100 cfs | ▲ +1,250 cfs (+20.5%) | 104.01 ft | -0.05 ft |
Last 7 days
| Measure | Flow | Time | Relative to latest reading |
|---|---|---|---|
| Highest reading | 15,500 cfs | Oct 11, 1:45 AM PDT | 136 h earlier |
| Lowest reading | 3,170 cfs | Oct 15, 8:45 PM PDT | 22 h earlier |
Source: computed from USGS continuous readings (Water Data API) to Oct 16, 6:15 PM PDT. Each row compares the latest reading with the reading closest to that many hours earlier; the arrow is steady (▬) when the change is within 1%.
Daily mean flow Live gauge
| Date (gauge-local) | Mean flow | Note |
|---|---|---|
| Oct 16, 2026 | – | Partial day |
| Oct 15, 2026 | 9,171 cfs | |
| Oct 14, 2026 | 9,722 cfs | |
| Oct 13, 2026 | 10,081 cfs | |
| Oct 12, 2026 | 10,743 cfs | |
| Oct 11, 2026 | 10,943 cfs | |
| Oct 10, 2026 | 11,410 cfs | |
| Oct 9, 2026 | 11,744 cfs | |
| Oct 8, 2026 | – | Partial day |
Source: USGS Water Data API (continuous values); each mean uses readings on that gauge-local date, shown only with at least 80% of expected readings.
Largest annual peaks Historical record
Ten largest peaks of record
| Date | Peak flow | Gage height at peak |
|---|---|---|
| Feb 19, 1986 | 117,000 cfs | 25.00 ft |
| Jan 3, 1997 | 115,000 cfs | 23.83 ft |
| Nov 21, 1950 | 104,000 cfs | 30.14 ft |
| Jan 17, 1909 | 103,000 cfs | 29.60 ft |
| Feb 16, 1982 | 103,000 cfs | 21.27 ft |
| Mar 11, 1995 | 102,000 cfs | 21.77 ft |
| Feb 9, 2017 | 100,000 cfs | 121.17 ft |
| Dec 25, 1964 | 99,700 cfs | 29.36 ft |
| Feb 1, 1963 | 98,100 cfs | 28.52 ft |
| Feb 4, 1998 | 97,900 cfs | 20.96 ft |
Five most recent annual peaks
| Date | Peak flow | Gage height at peak |
|---|---|---|
| Feb 10, 2025 | 76,800 cfs | 117.09 ft |
| Feb 23, 2024 | 69,200 cfs | 115.71 ft |
| Mar 15, 2023 | 88,100 cfs | 119.84 ft |
| Oct 27, 2021 | 39,400 cfs | 107.39 ft |
| Jan 31, 2021 | 19,900 cfs | 103.53 ft |
Source: USGS annual peak streamflow (Water Data API), 78 annual peaks, 1909 to 2025. A water year's peak is its highest instantaneous flow.
Water temperature by month Historical record
Source: USGS daily mean water temperature (parameter 00010, Water Data API), 1972 to 2023, mean of all published daily values in each calendar month (days counted under each month; (few) means fewer than 150 daily values).
Water quality sensors Live gauge
| Measure | Latest value | Observed |
|---|---|---|
| Water temperature | 63.3 °F (17.4 °C) | Oct 16, 7:00 PM PDT |
| Dissolved oxygen | 9.2 mg/L | Oct 16, 6:15 PM PDT |
| Turbidity | 1.9 FNU | Oct 16, 6:15 PM PDT |
| Specific conductance | 121 µS/cm | Oct 16, 6:15 PM PDT |
| Nitrate plus nitrite | 0.28 mg/L | Oct 16, 6:15 PM PDT |
Source: USGS Water Data API (continuous values). Values as reported by the gauge, provisional.
Sources and method
- Data: U.S. Geological Survey. Terms
USGS daily statistics, downloaded 2026-10-12
Percentile method: trailing 24 h mean vs USGS daily percentiles for calendar date 10-16.
Percentile is estimated from USGS published daily percentiles. Readings are provisional until USGS reviews them. Not endorsed by USGS, NOAA or the National Weather Service. Not for navigation or safety-of-life decisions; the absence of an alert is not a statement that conditions are safe.