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

Klamath2026040812_klamath_hefs_csv_daily.zip08-Apr-2026 09:46 AM PDT1192K
North Coast2026040812_NorthCoast_hefs_csv_daily.zip08-Apr-2026 09:46 AM PDT1160K
Russian/Napa2026040812_RussianNapa_hefs_csv_daily.zip08-Apr-2026 09:57 AM PDT1463K
Upper Sacramento2026040812_UpperSacramento_hefs_csv_daily.zip08-Apr-2026 09:42 AM PDT1438K
Feather/Yuba2026040812_FeatherYuba_hefs_csv_daily.zip08-Apr-2026 09:42 AM PDT2179K
Cache/Putah2026040812_cacheputah_hefs_csv_daily.zip08-Apr-2026 09:49 AM PDT196K
American2026040812_american_hefs_csv_daily.zip08-Apr-2026 09:21 AM PDT1787K
Salinas/Pajaro2026040812_SalinasPajaro_hefs_csv_daily.zip08-Apr-2026 10:05 AM PDT529K
South Bay2026040812_SouthBay_hefs_csv_daily.zip08-Apr-2026 10:01 AM PDT406K
Southern California2026040812_SouthernCalifornia_hefs_csv_daily.zip08-Apr-2026 10:06 AM PDT934K
San Diego/Inland2026040812_SanDiego_Inland_hefs_csv_daily.zip08-Apr-2026 10:06 AM PDT588K
Tulare2026040812_Tulare_hefs_csv_daily.zip08-Apr-2026 09:39 AM PDT839K
San Joaquin2026040812_SanJoaquin_hefs_csv_daily.zip08-Apr-2026 09:42 AM PDT1318K
North San Joaquin2026040812_n_sanjoaquin_hefs_csv_daily.zip08-Apr-2026 09:42 AM PDT517K
East Sierra2026040812_EastSierra_hefs_csv_daily.zip08-Apr-2026 10:07 AM PDT2006K
Humboldt2026040812_Humboldt_hefs_csv_daily.zip08-Apr-2026 10:06 AM PDT751K
Water Supply Indices2026040812_WSI_hefs_csv_daily.zip08-Apr-2026 10:08 AM PDT216K

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