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

Klamath2026041612_klamath_hefs_csv_daily.zip16-Apr-2026 07:55 AM PDT1176K
North Coast2026041612_NorthCoast_hefs_csv_daily.zip16-Apr-2026 07:58 AM PDT1148K
Russian/Napa2026041612_RussianNapa_hefs_csv_daily.zip16-Apr-2026 08:02 AM PDT1484K
Upper Sacramento2026041612_UpperSacramento_hefs_csv_daily.zip16-Apr-2026 07:46 AM PDT1427K
Feather/Yuba2026041612_FeatherYuba_hefs_csv_daily.zip16-Apr-2026 07:44 AM PDT2168K
Cache/Putah2026041612_cacheputah_hefs_csv_daily.zip16-Apr-2026 07:54 AM PDT215K
American2026041612_american_hefs_csv_daily.zip16-Apr-2026 07:42 AM PDT1776K
Salinas/Pajaro2026041612_SalinasPajaro_hefs_csv_daily.zip16-Apr-2026 08:06 AM PDT541K
South Bay2026041612_SouthBay_hefs_csv_daily.zip16-Apr-2026 08:06 AM PDT402K
Southern California2026041612_SouthernCalifornia_hefs_csv_daily.zip16-Apr-2026 08:35 AM PDT871K
San Diego/Inland2026041612_SanDiego_Inland_hefs_csv_daily.zip16-Apr-2026 08:35 AM PDT571K
Tulare2026041612_Tulare_hefs_csv_daily.zip16-Apr-2026 07:53 AM PDT815K
San Joaquin2026041612_SanJoaquin_hefs_csv_daily.zip16-Apr-2026 07:57 AM PDT1292K
North San Joaquin2026041612_n_sanjoaquin_hefs_csv_daily.zip16-Apr-2026 07:56 AM PDT505K
East Sierra2026041612_EastSierra_hefs_csv_daily.zip16-Apr-2026 08:36 AM PDT1986K
Humboldt2026041612_Humboldt_hefs_csv_daily.zip16-Apr-2026 08:33 AM PDT718K
Water Supply Indices2026041612_WSI_hefs_csv_daily.zip16-Apr-2026 08:29 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

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Forecast Groups Archive

Forecast Group

Start Date

End Date