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

Klamath2026021312_klamath_hefs_csv_daily.zip13-Feb-2026 09:13 AM PST1218K
North Coast2026021312_NorthCoast_hefs_csv_daily.zip13-Feb-2026 09:13 AM PST1159K
Russian/Napa2026021312_RussianNapa_hefs_csv_daily.zip13-Feb-2026 09:12 AM PST1584K
Upper Sacramento2026021312_UpperSacramento_hefs_csv_daily.zip13-Feb-2026 08:46 AM PST1461K
Feather/Yuba2026021312_FeatherYuba_hefs_csv_daily.zip13-Feb-2026 08:45 AM PST2237K
Cache/Putah2026021312_cacheputah_hefs_csv_daily.zip13-Feb-2026 08:55 AM PST217K
American2026021312_american_hefs_csv_daily.zip13-Feb-2026 08:43 AM PST1821K
Salinas/Pajaro2026021312_SalinasPajaro_hefs_csv_daily.zip13-Feb-2026 09:15 AM PST622K
South Bay2026021312_SouthBay_hefs_csv_daily.zip13-Feb-2026 09:15 AM PST473K
Southern California2026021312_SouthernCalifornia_hefs_csv_daily.zip13-Feb-2026 09:19 AM PST1297K
San Diego/Inland2026021312_SanDiego_Inland_hefs_csv_daily.zip13-Feb-2026 09:27 AM PST700K
Tulare2026021312_Tulare_hefs_csv_daily.zip13-Feb-2026 08:44 AM PST887K
San Joaquin2026021312_SanJoaquin_hefs_csv_daily.zip13-Feb-2026 08:46 AM PST1353K
North San Joaquin2026021312_n_sanjoaquin_hefs_csv_daily.zip13-Feb-2026 09:09 AM PST534K
East Sierra2026021312_EastSierra_hefs_csv_daily.zip13-Feb-2026 09:36 AM PST2113K
Humboldt2026021312_Humboldt_hefs_csv_daily.zip13-Feb-2026 09:34 AM PST808K
Water Supply Indices2026021312_WSI_hefs_csv_daily.zip13-Feb-2026 09:32 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