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

Klamath2026053012_klamath_hefs_csv_daily.zip30-May-2026 08:02 AM PDT1090K
North Coast2026053012_NorthCoast_hefs_csv_daily.zip30-May-2026 08:06 AM PDT1021K
Russian/Napa2026053012_RussianNapa_hefs_csv_daily.zip30-May-2026 08:10 AM PDT1243K
Upper Sacramento2026053012_UpperSacramento_hefs_csv_daily.zip30-May-2026 07:32 AM PDT1298K
Feather/Yuba2026053012_FeatherYuba_hefs_csv_daily.zip30-May-2026 07:34 AM PDT2004K
Cache/Putah2026053012_cacheputah_hefs_csv_daily.zip30-May-2026 07:48 AM PDT185K
American2026053012_american_hefs_csv_daily.zip30-May-2026 07:36 AM PDT1662K
Salinas/Pajaro2026053012_SalinasPajaro_hefs_csv_daily.zip30-May-2026 08:14 AM PDT490K
South Bay2026053012_SouthBay_hefs_csv_daily.zip30-May-2026 08:12 AM PDT374K
Southern California2026053012_SouthernCalifornia_hefs_csv_daily.zip30-May-2026 08:16 AM PDT841K
San Diego/Inland2026053012_SanDiego_Inland_hefs_csv_daily.zip30-May-2026 08:16 AM PDT597K
Tulare2026053012_Tulare_hefs_csv_daily.zip30-May-2026 07:48 AM PDT785K
San Joaquin2026053012_SanJoaquin_hefs_csv_daily.zip30-May-2026 07:57 AM PDT1242K
North San Joaquin2026053012_n_sanjoaquin_hefs_csv_daily.zip30-May-2026 07:54 AM PDT458K
East Sierra2026053012_EastSierra_hefs_csv_daily.zip30-May-2026 08:19 AM PDT1849K
Humboldt2026053012_Humboldt_hefs_csv_daily.zip30-May-2026 08:17 AM PDT617K
Water Supply Indices2026053012_WSI_hefs_csv_daily.zip30-May-2026 08:21 AM PDT213K

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