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

Klamath2026040912_klamath_hefs_csv_daily.zip09-Apr-2026 07:43 AM PDT1192K
North Coast2026040912_NorthCoast_hefs_csv_daily.zip09-Apr-2026 07:52 AM PDT1162K
Russian/Napa2026040912_RussianNapa_hefs_csv_daily.zip09-Apr-2026 08:00 AM PDT1496K
Upper Sacramento2026040912_UpperSacramento_hefs_csv_daily.zip09-Apr-2026 07:04 AM PDT1443K
Feather/Yuba2026040912_FeatherYuba_hefs_csv_daily.zip09-Apr-2026 07:06 AM PDT2187K
Cache/Putah2026040912_cacheputah_hefs_csv_daily.zip09-Apr-2026 07:13 AM PDT198K
American2026040912_american_hefs_csv_daily.zip09-Apr-2026 07:08 AM PDT1795K
Salinas/Pajaro2026040912_SalinasPajaro_hefs_csv_daily.zip09-Apr-2026 07:42 AM PDT531K
South Bay2026040912_SouthBay_hefs_csv_daily.zip09-Apr-2026 07:43 AM PDT410K
Southern California2026040912_SouthernCalifornia_hefs_csv_daily.zip09-Apr-2026 07:39 AM PDT915K
San Diego/Inland2026040912_SanDiego_Inland_hefs_csv_daily.zip09-Apr-2026 07:36 AM PDT592K
Tulare2026040912_Tulare_hefs_csv_daily.zip09-Apr-2026 07:39 AM PDT837K
San Joaquin2026040912_SanJoaquin_hefs_csv_daily.zip09-Apr-2026 07:18 AM PDT1332K
North San Joaquin2026040912_n_sanjoaquin_hefs_csv_daily.zip09-Apr-2026 07:50 AM PDT522K
East Sierra2026040912_EastSierra_hefs_csv_daily.zip09-Apr-2026 07:46 AM PDT1998K
Humboldt2026040912_Humboldt_hefs_csv_daily.zip09-Apr-2026 08:00 AM PDT745K
Water Supply Indices2026040912_WSI_hefs_csv_daily.zip09-Apr-2026 08:01 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