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

Klamath2026033012_klamath_hefs_csv_daily.zip30-Mar-2026 07:51 AM PDT1188K
North Coast2026033012_NorthCoast_hefs_csv_daily.zip30-Mar-2026 10:12 AM PDT1125K
Russian/Napa2026033012_RussianNapa_hefs_csv_daily.zip30-Mar-2026 07:54 AM PDT1365K
Upper Sacramento2026033012_UpperSacramento_hefs_csv_daily.zip30-Mar-2026 07:29 AM PDT1406K
Feather/Yuba2026033012_FeatherYuba_hefs_csv_daily.zip30-Mar-2026 07:29 AM PDT2136K
Cache/Putah2026033012_cacheputah_hefs_csv_daily.zip30-Mar-2026 07:47 AM PDT189K
American2026033012_american_hefs_csv_daily.zip30-Mar-2026 07:26 AM PDT1758K
Salinas/Pajaro2026033012_SalinasPajaro_hefs_csv_daily.zip30-Mar-2026 07:54 AM PDT465K
South Bay2026033012_SouthBay_hefs_csv_daily.zip30-Mar-2026 07:55 AM PDT365K
Southern California2026033012_SouthernCalifornia_hefs_csv_daily.zip30-Mar-2026 08:08 AM PDT909K
San Diego/Inland2026033012_SanDiego_Inland_hefs_csv_daily.zip30-Mar-2026 08:08 AM PDT548K
Tulare2026033012_Tulare_hefs_csv_daily.zip30-Mar-2026 10:31 AM PDT822K
San Joaquin2026033012_SanJoaquin_hefs_csv_daily.zip30-Mar-2026 07:28 AM PDT1280K
North San Joaquin2026033012_n_sanjoaquin_hefs_csv_daily.zip30-Mar-2026 07:48 AM PDT501K
East Sierra2026033012_EastSierra_hefs_csv_daily.zip30-Mar-2026 08:09 AM PDT1970K
Humboldt2026033012_Humboldt_hefs_csv_daily.zip30-Mar-2026 08:05 AM PDT712K
Water Supply Indices2026033012_WSI_hefs_csv_daily.zip30-Mar-2026 07:59 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