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

Klamath2026101812_klamath_hefs_csv_daily.zip18-Oct-2026 07:28 AM PDT1216K
North Coast2026101812_NorthCoast_hefs_csv_daily.zip18-Oct-2026 07:27 AM PDT1147K
Russian/Napa2026101812_RussianNapa_hefs_csv_daily.zip18-Oct-2026 07:27 AM PDT1568K
Upper Sacramento2026101812_UpperSacramento_hefs_csv_daily.zip18-Oct-2026 07:09 AM PDT1434K
Feather/Yuba2026101812_FeatherYuba_hefs_csv_daily.zip18-Oct-2026 07:12 AM PDT2208K
Cache/Putah2026101812_cacheputah_hefs_csv_daily.zip18-Oct-2026 07:09 AM PDT218K
American2026101812_american_hefs_csv_daily.zip18-Oct-2026 07:09 AM PDT1813K
Salinas/Pajaro2026101812_SalinasPajaro_hefs_csv_daily.zip18-Oct-2026 07:29 AM PDT594K
South Bay2026101812_SouthBay_hefs_csv_daily.zip18-Oct-2026 07:32 AM PDT469K
Southern California2026101812_SouthernCalifornia_hefs_csv_daily.zip18-Oct-2026 07:38 AM PDT1174K
San Diego/Inland2026101812_SanDiego_Inland_hefs_csv_daily.zip18-Oct-2026 07:37 AM PDT753K
Tulare2026101812_Tulare_hefs_csv_daily.zip18-Oct-2026 07:13 AM PDT879K
San Joaquin2026101812_SanJoaquin_hefs_csv_daily.zip18-Oct-2026 07:20 AM PDT1324K
North San Joaquin2026101812_n_sanjoaquin_hefs_csv_daily.zip18-Oct-2026 07:20 AM PDT529K
East Sierra2026101812_EastSierra_hefs_csv_daily.zip18-Oct-2026 07:29 AM PDT2114K
Humboldt2026101812_Humboldt_hefs_csv_daily.zip18-Oct-2026 07:38 AM PDT811K
Water Supply Indices2026101812_WSI_hefs_csv_daily.zip18-Oct-2026 07:36 AM PDT218K

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