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Long Range Daily Ensemble CSV File Download

Forecast Groups

Forecast Group

Filename

Date/Time Last Modified

Size

Klamath2026051012_klamath_hefs_csv_daily.zip10-May-2026 07:18 AM PDT1127K
North Coast2026051012_NorthCoast_hefs_csv_daily.zip10-May-2026 07:17 AM PDT1071K
Russian/Napa2026051012_RussianNapa_hefs_csv_daily.zip10-May-2026 07:24 AM PDT1287K
Upper Sacramento2026051012_UpperSacramento_hefs_csv_daily.zip10-May-2026 07:02 AM PDT1355K
Feather/Yuba2026051012_FeatherYuba_hefs_csv_daily.zip10-May-2026 07:00 AM PDT2089K
Cache/Putah2026051012_cacheputah_hefs_csv_daily.zip10-May-2026 07:01 AM PDT196K
American2026051012_american_hefs_csv_daily.zip10-May-2026 06:58 AM PDT1711K
Salinas/Pajaro2026051012_SalinasPajaro_hefs_csv_daily.zip10-May-2026 07:29 AM PDT470K
South Bay2026051012_SouthBay_hefs_csv_daily.zip10-May-2026 07:27 AM PDT365K
Southern California2026051012_SouthernCalifornia_hefs_csv_daily.zip10-May-2026 07:30 AM PDT832K
San Diego/Inland2026051012_SanDiego_Inland_hefs_csv_daily.zip10-May-2026 07:30 AM PDT582K
Tulare2026051012_Tulare_hefs_csv_daily.zip10-May-2026 07:17 AM PDT791K
San Joaquin2026051012_SanJoaquin_hefs_csv_daily.zip10-May-2026 07:31 AM PDT1250K
North San Joaquin2026051012_n_sanjoaquin_hefs_csv_daily.zip10-May-2026 07:16 AM PDT485K
East Sierra2026051012_EastSierra_hefs_csv_daily.zip10-May-2026 06:55 AM PDT1699K
Humboldt2026051012_Humboldt_hefs_csv_daily.zip10-May-2026 06:53 AM PDT607K
Water Supply Indices2026051012_WSI_hefs_csv_daily.zip10-May-2026 07:42 AM PDT214K

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