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

Long Range Daily Ensemble CSV File Download

Forecast Groups

Forecast Group

Filename

Date/Time Last Modified

Size

Klamath2026042212_klamath_hefs_csv_daily.zip22-Apr-2026 07:07 AM PDT1175K
North Coast2026042212_NorthCoast_hefs_csv_daily.zip22-Apr-2026 07:44 AM PDT1139K
Russian/Napa2026042212_RussianNapa_hefs_csv_daily.zip22-Apr-2026 07:42 AM PDT1470K
Upper Sacramento2026042212_UpperSacramento_hefs_csv_daily.zip22-Apr-2026 07:11 AM PDT1435K
Feather/Yuba2026042212_FeatherYuba_hefs_csv_daily.zip22-Apr-2026 07:17 AM PDT2169K
Cache/Putah2026042212_cacheputah_hefs_csv_daily.zip22-Apr-2026 07:43 AM PDT211K
American2026042212_american_hefs_csv_daily.zip22-Apr-2026 07:37 AM PDT1785K
Salinas/Pajaro2026042212_SalinasPajaro_hefs_csv_daily.zip22-Apr-2026 07:38 AM PDT532K
South Bay2026042212_SouthBay_hefs_csv_daily.zip22-Apr-2026 07:31 AM PDT406K
Southern California2026042212_SouthernCalifornia_hefs_csv_daily.zip22-Apr-2026 07:29 AM PDT867K
San Diego/Inland2026042212_SanDiego_Inland_hefs_csv_daily.zip22-Apr-2026 07:22 AM PDT580K
Tulare2026042212_Tulare_hefs_csv_daily.zip22-Apr-2026 07:47 AM PDT814K
San Joaquin2026042212_SanJoaquin_hefs_csv_daily.zip22-Apr-2026 07:37 AM PDT1290K
North San Joaquin2026042212_n_sanjoaquin_hefs_csv_daily.zip22-Apr-2026 07:43 AM PDT509K
East Sierra2026042212_EastSierra_hefs_csv_daily.zip22-Apr-2026 07:39 AM PDT1990K
Humboldt2026042212_Humboldt_hefs_csv_daily.zip22-Apr-2026 07:49 AM PDT732K
Water Supply Indices2026042212_WSI_hefs_csv_daily.zip22-Apr-2026 07:50 AM PDT215K

Note 1: Data represented in the files are in kcfs (thousands of cubic feet per second).

Note 2: Each location includes 44 ensemble members with the first column starting with year 1980 and the last column ending with year 2023. Each historical year is more meaningful beyond the first couple weeks when climatology drives the spread in the ensemble.

Note 3: On October 20, 2022 the Central Coast forecast group was split into two forecast groups (Salinas/Pajaro and South Bay) and the Southern California forecast group was split into two forecast groups (Southern California and San Diego/Inland).

Individual Points

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Forecast Groups Archive

Forecast Group

Start Date

End Date