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

Klamath2026040312_klamath_hefs_csv_daily.zip03-Apr-2026 08:07 AM PDT1181K
North Coast2026040312_NorthCoast_hefs_csv_daily.zip03-Apr-2026 08:17 AM PDT1137K
Russian/Napa2026040312_RussianNapa_hefs_csv_daily.zip03-Apr-2026 08:07 AM PDT1355K
Upper Sacramento2026040312_UpperSacramento_hefs_csv_daily.zip03-Apr-2026 07:54 AM PDT1411K
Feather/Yuba2026040312_FeatherYuba_hefs_csv_daily.zip03-Apr-2026 07:53 AM PDT2137K
Cache/Putah2026040312_cacheputah_hefs_csv_daily.zip03-Apr-2026 08:01 AM PDT195K
American2026040312_american_hefs_csv_daily.zip03-Apr-2026 08:01 AM PDT1760K
Salinas/Pajaro2026040312_SalinasPajaro_hefs_csv_daily.zip03-Apr-2026 08:08 AM PDT488K
South Bay2026040312_SouthBay_hefs_csv_daily.zip03-Apr-2026 08:08 AM PDT379K
Southern California2026040312_SouthernCalifornia_hefs_csv_daily.zip03-Apr-2026 08:16 AM PDT908K
San Diego/Inland2026040312_SanDiego_Inland_hefs_csv_daily.zip03-Apr-2026 08:16 AM PDT575K
Tulare2026040312_Tulare_hefs_csv_daily.zip03-Apr-2026 08:01 AM PDT812K
San Joaquin2026040312_SanJoaquin_hefs_csv_daily.zip03-Apr-2026 07:54 AM PDT1281K
North San Joaquin2026040312_n_sanjoaquin_hefs_csv_daily.zip03-Apr-2026 08:00 AM PDT502K
East Sierra2026040312_EastSierra_hefs_csv_daily.zip03-Apr-2026 08:17 AM PDT1973K
Humboldt2026040312_Humboldt_hefs_csv_daily.zip03-Apr-2026 08:14 AM PDT732K
Water Supply Indices2026040312_WSI_hefs_csv_daily.zip03-Apr-2026 08:17 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

Enter desired location(s) below (some older browsers may allow only one file download at a time):

Forecast Groups Archive

Forecast Group

Start Date

End Date