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

Klamath2026042112_klamath_hefs_csv_daily.zip21-Apr-2026 07:35 AM PDT1181K
North Coast2026042112_NorthCoast_hefs_csv_daily.zip21-Apr-2026 07:53 AM PDT1140K
Russian/Napa2026042112_RussianNapa_hefs_csv_daily.zip21-Apr-2026 07:41 AM PDT1488K
Upper Sacramento2026042112_UpperSacramento_hefs_csv_daily.zip21-Apr-2026 06:58 AM PDT1439K
Feather/Yuba2026042112_FeatherYuba_hefs_csv_daily.zip21-Apr-2026 07:07 AM PDT2185K
Cache/Putah2026042112_cacheputah_hefs_csv_daily.zip21-Apr-2026 07:32 AM PDT214K
American2026042112_american_hefs_csv_daily.zip21-Apr-2026 07:23 AM PDT1797K
Salinas/Pajaro2026042112_SalinasPajaro_hefs_csv_daily.zip21-Apr-2026 07:36 AM PDT561K
South Bay2026042112_SouthBay_hefs_csv_daily.zip21-Apr-2026 07:31 AM PDT415K
Southern California2026042112_SouthernCalifornia_hefs_csv_daily.zip21-Apr-2026 07:07 AM PDT913K
San Diego/Inland2026042112_SanDiego_Inland_hefs_csv_daily.zip21-Apr-2026 07:12 AM PDT589K
Tulare2026042112_Tulare_hefs_csv_daily.zip21-Apr-2026 07:44 AM PDT829K
San Joaquin2026042112_SanJoaquin_hefs_csv_daily.zip21-Apr-2026 07:56 AM PDT1320K
North San Joaquin2026042112_n_sanjoaquin_hefs_csv_daily.zip21-Apr-2026 07:51 AM PDT517K
East Sierra2026042112_EastSierra_hefs_csv_daily.zip21-Apr-2026 07:19 AM PDT1999K
Humboldt2026042112_Humboldt_hefs_csv_daily.zip21-Apr-2026 07:40 AM PDT728K
Water Supply Indices2026042112_WSI_hefs_csv_daily.zip21-Apr-2026 08:20 AM PDT216K

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