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Long Range Daily Ensemble CSV File Download

Forecast Groups

Forecast Group

Filename

Date/Time Last Modified

Size

Klamath2026051212_klamath_hefs_csv_daily.zip12-May-2026 08:27 AM PDT1120K
North Coast2026051212_NorthCoast_hefs_csv_daily.zip12-May-2026 08:28 AM PDT1065K
Russian/Napa2026051212_RussianNapa_hefs_csv_daily.zip12-May-2026 08:28 AM PDT1263K
Upper Sacramento2026051212_UpperSacramento_hefs_csv_daily.zip12-May-2026 08:13 AM PDT1341K
Feather/Yuba2026051212_FeatherYuba_hefs_csv_daily.zip12-May-2026 08:12 AM PDT2082K
Cache/Putah2026051212_cacheputah_hefs_csv_daily.zip12-May-2026 08:10 AM PDT192K
American2026051212_american_hefs_csv_daily.zip12-May-2026 08:11 AM PDT1704K
Salinas/Pajaro2026051212_SalinasPajaro_hefs_csv_daily.zip12-May-2026 08:42 AM PDT473K
South Bay2026051212_SouthBay_hefs_csv_daily.zip12-May-2026 08:42 AM PDT366K
Southern California2026051212_SouthernCalifornia_hefs_csv_daily.zip12-May-2026 08:42 AM PDT837K
San Diego/Inland2026051212_SanDiego_Inland_hefs_csv_daily.zip12-May-2026 08:42 AM PDT583K
Tulare2026051212_Tulare_hefs_csv_daily.zip12-May-2026 11:51 AM PDT789K
San Joaquin2026051212_SanJoaquin_hefs_csv_daily.zip12-May-2026 11:54 AM PDT1251K
North San Joaquin2026051212_n_sanjoaquin_hefs_csv_daily.zip12-May-2026 08:24 AM PDT483K
East Sierra2026051212_EastSierra_hefs_csv_daily.zip12-May-2026 11:53 AM PDT1879K
Humboldt2026051212_Humboldt_hefs_csv_daily.zip12-May-2026 09:09 AM PDT615K
Water Supply Indices2026051212_WSI_hefs_csv_daily.zip12-May-2026 09:07 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