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

Klamath2026041712_klamath_hefs_csv_daily.zip17-Apr-2026 07:50 AM PDT1181K
North Coast2026041712_NorthCoast_hefs_csv_daily.zip17-Apr-2026 07:59 AM PDT1158K
Russian/Napa2026041712_RussianNapa_hefs_csv_daily.zip17-Apr-2026 08:06 AM PDT1518K
Upper Sacramento2026041712_UpperSacramento_hefs_csv_daily.zip17-Apr-2026 07:41 AM PDT1433K
Feather/Yuba2026041712_FeatherYuba_hefs_csv_daily.zip17-Apr-2026 07:40 AM PDT2175K
Cache/Putah2026041712_cacheputah_hefs_csv_daily.zip17-Apr-2026 07:49 AM PDT215K
American2026041712_american_hefs_csv_daily.zip17-Apr-2026 07:39 AM PDT1781K
Salinas/Pajaro2026041712_SalinasPajaro_hefs_csv_daily.zip17-Apr-2026 08:08 AM PDT550K
South Bay2026041712_SouthBay_hefs_csv_daily.zip17-Apr-2026 08:08 AM PDT412K
Southern California2026041712_SouthernCalifornia_hefs_csv_daily.zip17-Apr-2026 08:10 AM PDT911K
San Diego/Inland2026041712_SanDiego_Inland_hefs_csv_daily.zip17-Apr-2026 08:12 AM PDT581K
Tulare2026041712_Tulare_hefs_csv_daily.zip17-Apr-2026 07:48 AM PDT826K
San Joaquin2026041712_SanJoaquin_hefs_csv_daily.zip17-Apr-2026 07:42 AM PDT1301K
North San Joaquin2026041712_n_sanjoaquin_hefs_csv_daily.zip17-Apr-2026 07:48 AM PDT508K
East Sierra2026041712_EastSierra_hefs_csv_daily.zip17-Apr-2026 08:15 AM PDT2000K
Humboldt2026041712_Humboldt_hefs_csv_daily.zip17-Apr-2026 08:13 AM PDT713K
Water Supply Indices2026041712_WSI_hefs_csv_daily.zip17-Apr-2026 08:20 AM PDT215K

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