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

Klamath2026022712_klamath_hefs_csv_daily.zip27-Feb-2026 08:36 AM PST1212K
North Coast2026022712_NorthCoast_hefs_csv_daily.zip27-Feb-2026 08:34 AM PST1165K
Russian/Napa2026022712_RussianNapa_hefs_csv_daily.zip27-Feb-2026 08:36 AM PST1503K
Upper Sacramento2026022712_UpperSacramento_hefs_csv_daily.zip27-Feb-2026 08:01 AM PST1451K
Feather/Yuba2026022712_FeatherYuba_hefs_csv_daily.zip27-Feb-2026 08:09 AM PST2201K
Cache/Putah2026022712_cacheputah_hefs_csv_daily.zip27-Feb-2026 08:33 AM PST213K
American2026022712_american_hefs_csv_daily.zip27-Feb-2026 08:27 AM PST1795K
Salinas/Pajaro2026022712_SalinasPajaro_hefs_csv_daily.zip27-Feb-2026 08:54 AM PST550K
South Bay2026022712_SouthBay_hefs_csv_daily.zip27-Feb-2026 08:54 AM PST414K
Southern California2026022712_SouthernCalifornia_hefs_csv_daily.zip27-Feb-2026 08:56 AM PST1110K
San Diego/Inland2026022712_SanDiego_Inland_hefs_csv_daily.zip27-Feb-2026 08:55 AM PST603K
Tulare2026022712_Tulare_hefs_csv_daily.zip27-Feb-2026 08:40 AM PST873K
San Joaquin2026022712_SanJoaquin_hefs_csv_daily.zip27-Feb-2026 08:54 AM PST1316K
North San Joaquin2026022712_n_sanjoaquin_hefs_csv_daily.zip27-Feb-2026 08:47 AM PST529K
East Sierra2026022712_EastSierra_hefs_csv_daily.zip27-Feb-2026 09:00 AM PST2069K
Humboldt2026022712_Humboldt_hefs_csv_daily.zip27-Feb-2026 09:03 AM PST817K
Water Supply Indices2026022712_WSI_hefs_csv_daily.zip27-Feb-2026 09:07 AM PST217K

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

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Forecast Groups Archive

Forecast Group

Start Date

End Date