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

Klamath2026090212_klamath_hefs_csv_daily.zip02-Sep-2026 07:42 AM PDT1214K
North Coast2026090212_NorthCoast_hefs_csv_daily.zip02-Sep-2026 07:35 AM PDT1150K
Russian/Napa2026090212_RussianNapa_hefs_csv_daily.zip02-Sep-2026 07:41 AM PDT1526K
Upper Sacramento2026090212_UpperSacramento_hefs_csv_daily.zip02-Sep-2026 07:19 AM PDT1428K
Feather/Yuba2026090212_FeatherYuba_hefs_csv_daily.zip02-Sep-2026 07:33 AM PDT2206K
Cache/Putah2026090212_cacheputah_hefs_csv_daily.zip02-Sep-2026 07:35 AM PDT208K
American2026090212_american_hefs_csv_daily.zip02-Sep-2026 07:31 AM PDT1795K
Salinas/Pajaro2026090212_SalinasPajaro_hefs_csv_daily.zip02-Sep-2026 07:47 AM PDT559K
South Bay2026090212_SouthBay_hefs_csv_daily.zip02-Sep-2026 07:47 AM PDT440K
Southern California2026090212_SouthernCalifornia_hefs_csv_daily.zip02-Sep-2026 07:53 AM PDT998K
San Diego/Inland2026090212_SanDiego_Inland_hefs_csv_daily.zip02-Sep-2026 07:53 AM PDT677K
Tulare2026090212_Tulare_hefs_csv_daily.zip02-Sep-2026 07:35 AM PDT845K
San Joaquin2026090212_SanJoaquin_hefs_csv_daily.zip02-Sep-2026 07:39 AM PDT1292K
North San Joaquin2026090212_n_sanjoaquin_hefs_csv_daily.zip02-Sep-2026 08:14 AM PDT515K
East Sierra2026090212_EastSierra_hefs_csv_daily.zip02-Sep-2026 07:54 AM PDT2039K
Humboldt2026090212_Humboldt_hefs_csv_daily.zip02-Sep-2026 07:52 AM PDT755K
Water Supply Indices2026090212_WSI_hefs_csv_daily.zip02-Sep-2026 07:52 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