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Long Range Daily Ensemble CSV File Download

Forecast Groups

Forecast Group

Filename

Date/Time Last Modified

Size

Klamath2026051812_klamath_hefs_csv_daily.zip18-May-2026 07:54 AM PDT1105K
North Coast2026051812_NorthCoast_hefs_csv_daily.zip18-May-2026 07:53 AM PDT1050K
Russian/Napa2026051812_RussianNapa_hefs_csv_daily.zip18-May-2026 07:54 AM PDT1234K
Upper Sacramento2026051812_UpperSacramento_hefs_csv_daily.zip18-May-2026 07:37 AM PDT1326K
Feather/Yuba2026051812_FeatherYuba_hefs_csv_daily.zip18-May-2026 07:36 AM PDT2046K
Cache/Putah2026051812_cacheputah_hefs_csv_daily.zip18-May-2026 07:48 AM PDT189K
American2026051812_american_hefs_csv_daily.zip18-May-2026 07:34 AM PDT1695K
Salinas/Pajaro2026051812_SalinasPajaro_hefs_csv_daily.zip18-May-2026 08:02 AM PDT476K
South Bay2026051812_SouthBay_hefs_csv_daily.zip18-May-2026 07:56 AM PDT372K
Southern California2026051812_SouthernCalifornia_hefs_csv_daily.zip18-May-2026 08:02 AM PDT833K
San Diego/Inland2026051812_SanDiego_Inland_hefs_csv_daily.zip18-May-2026 08:08 AM PDT591K
Tulare2026051812_Tulare_hefs_csv_daily.zip18-May-2026 07:52 AM PDT790K
San Joaquin2026051812_SanJoaquin_hefs_csv_daily.zip18-May-2026 07:35 AM PDT1251K
North San Joaquin2026051812_n_sanjoaquin_hefs_csv_daily.zip18-May-2026 07:51 AM PDT471K
East Sierra2026051812_EastSierra_hefs_csv_daily.zip18-May-2026 08:09 AM PDT1864K
Humboldt2026051812_Humboldt_hefs_csv_daily.zip18-May-2026 08:08 AM PDT611K
Water Supply Indices2026051812_WSI_hefs_csv_daily.zip18-May-2026 08:11 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