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

Klamath2026040512_klamath_hefs_csv_daily.zip05-Apr-2026 07:46 AM PDT1183K
North Coast2026040512_NorthCoast_hefs_csv_daily.zip05-Apr-2026 07:46 AM PDT1140K
Russian/Napa2026040512_RussianNapa_hefs_csv_daily.zip05-Apr-2026 07:52 AM PDT1370K
Upper Sacramento2026040512_UpperSacramento_hefs_csv_daily.zip05-Apr-2026 07:14 AM PDT1417K
Feather/Yuba2026040512_FeatherYuba_hefs_csv_daily.zip05-Apr-2026 07:17 AM PDT2147K
Cache/Putah2026040512_cacheputah_hefs_csv_daily.zip05-Apr-2026 07:22 AM PDT193K
American2026040512_american_hefs_csv_daily.zip05-Apr-2026 07:23 AM PDT1765K
Salinas/Pajaro2026040512_SalinasPajaro_hefs_csv_daily.zip05-Apr-2026 08:01 AM PDT502K
South Bay2026040512_SouthBay_hefs_csv_daily.zip05-Apr-2026 07:56 AM PDT389K
Southern California2026040512_SouthernCalifornia_hefs_csv_daily.zip05-Apr-2026 08:02 AM PDT943K
San Diego/Inland2026040512_SanDiego_Inland_hefs_csv_daily.zip05-Apr-2026 08:07 AM PDT587K
Tulare2026040512_Tulare_hefs_csv_daily.zip05-Apr-2026 07:29 AM PDT817K
San Joaquin2026040512_SanJoaquin_hefs_csv_daily.zip05-Apr-2026 07:41 AM PDT1288K
North San Joaquin2026040512_n_sanjoaquin_hefs_csv_daily.zip05-Apr-2026 07:38 AM PDT503K
East Sierra2026040512_EastSierra_hefs_csv_daily.zip05-Apr-2026 08:08 AM PDT1977K
Humboldt2026040512_Humboldt_hefs_csv_daily.zip05-Apr-2026 08:09 AM PDT735K
Water Supply Indices2026040512_WSI_hefs_csv_daily.zip05-Apr-2026 08:11 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