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

Klamath2026050212_klamath_hefs_csv_daily.zip02-May-2026 08:45 AM PDT1153K
North Coast2026050212_NorthCoast_hefs_csv_daily.zip02-May-2026 08:47 AM PDT1122K
Russian/Napa2026050212_RussianNapa_hefs_csv_daily.zip02-May-2026 08:59 AM PDT1337K
Upper Sacramento2026050212_UpperSacramento_hefs_csv_daily.zip02-May-2026 07:39 AM PDT1405K
Feather/Yuba2026050212_FeatherYuba_hefs_csv_daily.zip02-May-2026 07:50 AM PDT2148K
Cache/Putah2026050212_cacheputah_hefs_csv_daily.zip02-May-2026 08:07 AM PDT206K
American2026050212_american_hefs_csv_daily.zip02-May-2026 08:07 AM PDT1758K
Salinas/Pajaro2026050212_SalinasPajaro_hefs_csv_daily.zip02-May-2026 09:00 AM PDT475K
South Bay2026050212_SouthBay_hefs_csv_daily.zip02-May-2026 09:00 AM PDT377K
Southern California2026050212_SouthernCalifornia_hefs_csv_daily.zip02-May-2026 09:02 AM PDT842K
San Diego/Inland2026050212_SanDiego_Inland_hefs_csv_daily.zip02-May-2026 09:15 AM PDT579K
Tulare2026050212_Tulare_hefs_csv_daily.zip02-May-2026 08:24 AM PDT811K
San Joaquin2026050212_SanJoaquin_hefs_csv_daily.zip02-May-2026 08:42 AM PDT1279K
North San Joaquin2026050212_n_sanjoaquin_hefs_csv_daily.zip02-May-2026 08:23 AM PDT508K
East Sierra2026050212_EastSierra_hefs_csv_daily.zip02-May-2026 09:16 AM PDT1953K
Humboldt2026050212_Humboldt_hefs_csv_daily.zip02-May-2026 09:14 AM PDT627K
Water Supply Indices2026050212_WSI_hefs_csv_daily.zip02-May-2026 09:11 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