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

Klamath2026043012_klamath_hefs_csv_daily.zip30-Apr-2026 08:01 AM PDT1164K
North Coast2026043012_NorthCoast_hefs_csv_daily.zip30-Apr-2026 08:12 AM PDT1131K
Russian/Napa2026043012_RussianNapa_hefs_csv_daily.zip30-Apr-2026 08:12 AM PDT1347K
Upper Sacramento2026043012_UpperSacramento_hefs_csv_daily.zip30-Apr-2026 07:37 AM PDT1415K
Feather/Yuba2026043012_FeatherYuba_hefs_csv_daily.zip30-Apr-2026 10:07 AM PDT2153K
Cache/Putah2026043012_cacheputah_hefs_csv_daily.zip30-Apr-2026 07:54 AM PDT205K
American2026043012_american_hefs_csv_daily.zip30-Apr-2026 07:41 AM PDT1759K
Salinas/Pajaro2026043012_SalinasPajaro_hefs_csv_daily.zip30-Apr-2026 08:21 AM PDT489K
South Bay2026043012_SouthBay_hefs_csv_daily.zip30-Apr-2026 08:22 AM PDT380K
Southern California2026043012_SouthernCalifornia_hefs_csv_daily.zip30-Apr-2026 08:22 AM PDT867K
San Diego/Inland2026043012_SanDiego_Inland_hefs_csv_daily.zip30-Apr-2026 08:21 AM PDT578K
Tulare2026043012_Tulare_hefs_csv_daily.zip30-Apr-2026 07:54 AM PDT808K
San Joaquin2026043012_SanJoaquin_hefs_csv_daily.zip30-Apr-2026 07:58 AM PDT1277K
North San Joaquin2026043012_n_sanjoaquin_hefs_csv_daily.zip30-Apr-2026 07:59 AM PDT508K
East Sierra2026043012_EastSierra_hefs_csv_daily.zip30-Apr-2026 08:06 AM PDT1958K
Humboldt2026043012_Humboldt_hefs_csv_daily.zip30-Apr-2026 07:28 AM PDT639K
Water Supply Indices2026043012_WSI_hefs_csv_daily.zip30-Apr-2026 08:08 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