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Long Range Daily Ensemble CSV File Download

Forecast Groups

Forecast Group

Filename

Date/Time Last Modified

Size

Klamath2026051512_klamath_hefs_csv_daily.zip15-May-2026 08:14 AM PDT1116K
North Coast2026051512_NorthCoast_hefs_csv_daily.zip15-May-2026 08:13 AM PDT1057K
Russian/Napa2026051512_RussianNapa_hefs_csv_daily.zip15-May-2026 08:14 AM PDT1239K
Upper Sacramento2026051512_UpperSacramento_hefs_csv_daily.zip15-May-2026 07:56 AM PDT1333K
Feather/Yuba2026051512_FeatherYuba_hefs_csv_daily.zip15-May-2026 07:55 AM PDT2048K
Cache/Putah2026051512_cacheputah_hefs_csv_daily.zip15-May-2026 08:07 AM PDT190K
American2026051512_american_hefs_csv_daily.zip15-May-2026 10:36 AM PDT1707K
Salinas/Pajaro2026051512_SalinasPajaro_hefs_csv_daily.zip15-May-2026 08:24 AM PDT475K
South Bay2026051512_SouthBay_hefs_csv_daily.zip15-May-2026 08:15 AM PDT373K
Southern California2026051512_SouthernCalifornia_hefs_csv_daily.zip15-May-2026 08:24 AM PDT827K
San Diego/Inland2026051512_SanDiego_Inland_hefs_csv_daily.zip15-May-2026 08:24 AM PDT589K
Tulare2026051512_Tulare_hefs_csv_daily.zip15-May-2026 10:35 AM PDT791K
San Joaquin2026051512_SanJoaquin_hefs_csv_daily.zip15-May-2026 10:37 AM PDT1254K
North San Joaquin2026051512_n_sanjoaquin_hefs_csv_daily.zip15-May-2026 08:11 AM PDT475K
East Sierra2026051512_EastSierra_hefs_csv_daily.zip15-May-2026 10:37 AM PDT1880K
Humboldt2026051512_Humboldt_hefs_csv_daily.zip15-May-2026 08:27 AM PDT623K
Water Supply Indices2026051512_WSI_hefs_csv_daily.zip15-May-2026 08:36 AM PDT212K

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