Sacramento River Water Temperature Threshold Analysis

Ecological Thresholds Queries
Clear Creek Lower American River Sacramento River Stanislaus River

Actual pre-season and in-season management decision processes are complex employing multiple sources of observed data, models, and forecasts. For further information, see the Threshold Analysis Criteria section.

Note: Years prior to 2019 pre-date the Reclamation Proposed Action and are provided for historical perspective on conditions.
graph 2026 Sacramento River Water Temp (°F)
2026 Sacramento River Water Temperature (°F) at multiple locations from Keswick Dam to Bend Bridge. Preliminary data from CDEC; subject to revision. 7 Day Average Daily Maximum (7DADM) calculations and figure generated by SacPAS.
Central Valley Operations Office, USBR: 2026 Northern CVP Water Temperature Report, with Sacramento River temperatures and flows, temperature control point, and Lake Shasta Isothermalbaths. File modified: January 02 2026 07:59:04.
Central Valley Operations Office, USBR: 2026 Shasta Temperature Control Device (TCD) Configuration with gate change operations, elevation, and temperatures. File modified: January 05 2026 15:15:03.

No 2026 data during target period, 5/15-10/31.

No 2026 data during target period, 5/15-10/31.

No 2026 data during target period, 5/15-10/31.

No 2026 data during target period, 5/15-10/31.

No 2026 data during target period, 5/15-10/31.

graph DAT all sites and Reservoir Data
2026 Sacramento River Daily Average Water Temperature. Temperature Locations from Keswick Dam to Bend Bridge. Shasta and Keswick Reservoir Storage in MAF and Outflow in TCFS. Preliminary data from CDEC; subject to revision. Figure generated by SacPAS.
graph Daily Max and 7DADM select sites
2026 Sacramento River Water Temperature. Daily Maximum and 7 Day Average Daily Maximum (7DADM) for SR Upstream of Hwy 44 (SAC) and SR abv Clear Creek (CCR). Preliminary data from CDEC; subject to revision. 7DADM calculations and figure generated by SacPAS.
download CSV  
2026 Sacramento River Temperature Data Table, Threshold Period 5/15/ - 10/31
Date Source Shasta
Storage
(MAF)		 Shasta
Outflow
(TCFS)		 Keswick
Outflow
(TCFS)		 KWK DAT WTemp °F SAC DAT WTemp °F CCR DAT WTemp °F BSF DAT WTemp °F JLF DAT WTemp °F BND DAT WTemp °F KWK 7DADM WTemp °F SAC 7DADM WTemp °F CCR 7DADM WTemp °F SAC Max WTemp °F CCR Max WTemp °F
Date Source Shasta
Storage
(MAF)		 Shasta
Outflow
(TCFS)		 Keswick
Outflow
(TCFS)		 KWK DAT WTemp °F SAC DAT WTemp °F CCR DAT WTemp °F BSF DAT WTemp °F JLF DAT WTemp °F BND DAT WTemp °F KWK 7DADM WTemp °F SAC 7DADM WTemp °F CCR 7DADM WTemp °F SAC Max WTemp °F CCR Max WTemp °F
2026-01-04 CDEC 3.463 8.286 10.005 52.2 52.3 52.4 52.4   52.1       52.4 52.6
2026-01-03 CDEC 3.379 7.792 9.889 52.2 52.3 52.5 52.6   52.3       52.5 52.9
2026-01-02 CDEC 3.330 5.209 7.390 52.2 52.1 52.4 51.9   51.6       52.3 52.7
2026-01-01 CDEC 3.304 5.509 7.314 52.2 52.2 52.2 51.4   51.1       52.2 52.3

Data Methods and Notes

Data Methods

  1. Data Courtesy of CDEC
  2. Hourly data is retrieved from CDEC on a daily basis.
  3. Columbia Basin Research (CBR) QA/QC processes hourly data for outliers, false data (e.g., 32F measured by satellite), and data outside expected range of observation (e.g., 90F). Data loaded into CBR database.
  4. CBR calculates Daily Average values based on CBR cleaned hourly values.
  5. CBR calculates 7 Day Average of Daily Maximum (7DADM) values based on CBR cleaned hourly values.
  6. Query for daily average water temperature for selected year and query maximum hourly value per day for selected year.
  7. Examine daily average data for criterion during date periods.

Threshold Analysis Criteria

Please refer to the Sacramento River Temperature Task Group (SRTTG) annual reports for details on within water year activities.