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

Klamath2026041012_klamath_hefs_csv_daily.zip10-Apr-2026 08:15 AM PDT1187K
North Coast2026041012_NorthCoast_hefs_csv_daily.zip10-Apr-2026 08:14 AM PDT1156K
Russian/Napa2026041012_RussianNapa_hefs_csv_daily.zip10-Apr-2026 07:54 AM PDT1476K
Upper Sacramento2026041012_UpperSacramento_hefs_csv_daily.zip10-Apr-2026 07:47 AM PDT1438K
Feather/Yuba2026041012_FeatherYuba_hefs_csv_daily.zip10-Apr-2026 07:46 AM PDT2183K
Cache/Putah2026041012_cacheputah_hefs_csv_daily.zip10-Apr-2026 08:21 AM PDT197K
American2026041012_american_hefs_csv_daily.zip10-Apr-2026 07:44 AM PDT1794K
Salinas/Pajaro2026041012_SalinasPajaro_hefs_csv_daily.zip10-Apr-2026 08:36 AM PDT535K
South Bay2026041012_SouthBay_hefs_csv_daily.zip10-Apr-2026 08:23 AM PDT408K
Southern California2026041012_SouthernCalifornia_hefs_csv_daily.zip10-Apr-2026 08:37 AM PDT908K
San Diego/Inland2026041012_SanDiego_Inland_hefs_csv_daily.zip10-Apr-2026 08:37 AM PDT591K
Tulare2026041012_Tulare_hefs_csv_daily.zip10-Apr-2026 07:52 AM PDT834K
San Joaquin2026041012_SanJoaquin_hefs_csv_daily.zip10-Apr-2026 07:55 AM PDT1325K
North San Joaquin2026041012_n_sanjoaquin_hefs_csv_daily.zip10-Apr-2026 08:12 AM PDT514K
East Sierra2026041012_EastSierra_hefs_csv_daily.zip10-Apr-2026 07:55 AM PDT1991K
Humboldt2026041012_Humboldt_hefs_csv_daily.zip10-Apr-2026 08:15 AM PDT744K
Water Supply Indices2026041012_WSI_hefs_csv_daily.zip10-Apr-2026 08:32 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

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Forecast Groups Archive

Forecast Group

Start Date

End Date