National Weather Service California-Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

Raw ESP Water Supply Forecast

*CAUTION: Data below is raw model output and has not been reviewed
*         by a hydrologist.

Program run: 11/12/2026 1635Z
Data ending: 11/12/2026 12Z
* All units are in thousands of acre-feet.

Station: SHDC1 (Sacramento - Shasta Dam)

MONTHLY DATA

October    Obs:  192.6  Mean:  223.2  WY-to-date: Obs:  192.6 Mean:  223.2
2026       % of mean:    86% 

November   Obs (thru 12@12Z):   75.8    Mean:  303.3  WY-to-date: Obs:  268.3 Mean:  324.3
2026       Prob. level:      90    75    50    25    10
           Fcst Residual:   138   151   183   267   349
           Obs + Fcst:      214   227   258   342   425
           % of mean:                    85% 

December   Mean:  545.0
2026       Prob. level:      90    75    50    25    10
           Forecast:        215   272   445   816  1185
           % of mean:                    82% 

January    Mean:  699.0
2027       Prob. level:      90    75    50    25    10
           Forecast:        266   374   610  1020  1494
           % of mean:                    87% 

February   Mean:  810.4
2027       Prob. level:      90    75    50    25    10
           Forecast:        285   408   623  1126  1684
           % of mean:                    77% 

March      Mean:  923.4
2027       Prob. level:      90    75    50    25    10
           Forecast:        358   551   797  1262  1550
           % of mean:                    86% 

April      Mean:  656.2
2027       Prob. level:      90    75    50    25    10
           Forecast:        303   413   563   829  1255
           % of mean:                    86% 

May        Mean:  509.0
2027       Prob. level:      90    75    50    25    10
           Forecast:        246   296   408   675   895
           % of mean:                    80% 

June       Mean:  317.7
2027       Prob. level:      90    75    50    25    10
           Forecast:        187   219   277   367   498
           % of mean:                    87% 

July       Mean:  230.6
2027       Prob. level:      90    75    50    25    10
           Forecast:        169   192   216   257   295
           % of mean:                    94% 

August     Mean:  202.9
2027       Prob. level:      90    75    50    25    10
           Forecast:        159   174   200   231   262
           % of mean:                    99% 

September  Mean:  195.1
2027       Prob. level:      90    75    50    25    10
           Forecast:        160   168   196   220   247
           % of mean:                   101% 

-------------------------------------------------------

Water Year Obs-To-Date:  268.3    Mean: 5615.9
WY2027     Prob. level:      90    75    50    25    10
           Fcst Residual:  3057  3615  5054  6909  8873
           Obs + Fcst:     3326  3884  5323  7177  9141
           % of mean:                    95%