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

Klamath2026052212_klamath_hefs_csv_daily.zip22-May-2026 07:47 AM PDT1111K
North Coast2026052212_NorthCoast_hefs_csv_daily.zip22-May-2026 09:23 AM PDT1058K
Russian/Napa2026052212_RussianNapa_hefs_csv_daily.zip22-May-2026 09:24 AM PDT1241K
Upper Sacramento2026052212_UpperSacramento_hefs_csv_daily.zip22-May-2026 07:18 AM PDT1345K
Feather/Yuba2026052212_FeatherYuba_hefs_csv_daily.zip22-May-2026 07:27 AM PDT2078K
Cache/Putah2026052212_cacheputah_hefs_csv_daily.zip22-May-2026 07:46 AM PDT191K
American2026052212_american_hefs_csv_daily.zip22-May-2026 07:26 AM PDT1699K
Salinas/Pajaro2026052212_SalinasPajaro_hefs_csv_daily.zip22-May-2026 09:29 AM PDT482K
South Bay2026052212_SouthBay_hefs_csv_daily.zip22-May-2026 09:25 AM PDT372K
Southern California2026052212_SouthernCalifornia_hefs_csv_daily.zip22-May-2026 09:30 AM PDT839K
San Diego/Inland2026052212_SanDiego_Inland_hefs_csv_daily.zip22-May-2026 09:36 AM PDT588K
Tulare2026052212_Tulare_hefs_csv_daily.zip22-May-2026 07:46 AM PDT792K
San Joaquin2026052212_SanJoaquin_hefs_csv_daily.zip22-May-2026 08:01 AM PDT1251K
North San Joaquin2026052212_n_sanjoaquin_hefs_csv_daily.zip22-May-2026 07:45 AM PDT467K
East Sierra2026052212_EastSierra_hefs_csv_daily.zip22-May-2026 09:40 AM PDT1885K
Humboldt2026052212_Humboldt_hefs_csv_daily.zip22-May-2026 07:25 AM PDT628K
Water Supply Indices2026052212_WSI_hefs_csv_daily.zip22-May-2026 09:33 AM PDT213K

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