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

Klamath2026042412_klamath_hefs_csv_daily.zip24-Apr-2026 07:49 AM PDT1155K
North Coast2026042412_NorthCoast_hefs_csv_daily.zip24-Apr-2026 07:49 AM PDT1120K
Russian/Napa2026042412_RussianNapa_hefs_csv_daily.zip24-Apr-2026 07:52 AM PDT1340K
Upper Sacramento2026042412_UpperSacramento_hefs_csv_daily.zip24-Apr-2026 07:27 AM PDT1426K
Feather/Yuba2026042412_FeatherYuba_hefs_csv_daily.zip24-Apr-2026 07:25 AM PDT2149K
Cache/Putah2026042412_cacheputah_hefs_csv_daily.zip24-Apr-2026 07:29 AM PDT204K
American2026042412_american_hefs_csv_daily.zip24-Apr-2026 07:23 AM PDT1757K
Salinas/Pajaro2026042412_SalinasPajaro_hefs_csv_daily.zip24-Apr-2026 08:00 AM PDT490K
South Bay2026042412_SouthBay_hefs_csv_daily.zip24-Apr-2026 08:00 AM PDT371K
Southern California2026042412_SouthernCalifornia_hefs_csv_daily.zip24-Apr-2026 08:08 AM PDT879K
San Diego/Inland2026042412_SanDiego_Inland_hefs_csv_daily.zip24-Apr-2026 08:08 AM PDT588K
Tulare2026042412_Tulare_hefs_csv_daily.zip24-Apr-2026 07:23 AM PDT814K
San Joaquin2026042412_SanJoaquin_hefs_csv_daily.zip24-Apr-2026 07:41 AM PDT1288K
North San Joaquin2026042412_n_sanjoaquin_hefs_csv_daily.zip24-Apr-2026 07:39 AM PDT495K
East Sierra2026042412_EastSierra_hefs_csv_daily.zip24-Apr-2026 08:54 AM PDT1957K
Humboldt2026042412_Humboldt_hefs_csv_daily.zip24-Apr-2026 08:10 AM PDT683K
Water Supply Indices2026042412_WSI_hefs_csv_daily.zip24-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