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

Klamath2026042712_klamath_hefs_csv_daily.zip27-Apr-2026 08:05 AM PDT1164K
North Coast2026042712_NorthCoast_hefs_csv_daily.zip27-Apr-2026 08:16 AM PDT1127K
Russian/Napa2026042712_RussianNapa_hefs_csv_daily.zip27-Apr-2026 08:14 AM PDT1349K
Upper Sacramento2026042712_UpperSacramento_hefs_csv_daily.zip27-Apr-2026 07:35 AM PDT1417K
Feather/Yuba2026042712_FeatherYuba_hefs_csv_daily.zip27-Apr-2026 07:33 AM PDT2148K
Cache/Putah2026042712_cacheputah_hefs_csv_daily.zip27-Apr-2026 07:45 AM PDT205K
American2026042712_american_hefs_csv_daily.zip27-Apr-2026 07:31 AM PDT1755K
Salinas/Pajaro2026042712_SalinasPajaro_hefs_csv_daily.zip27-Apr-2026 08:17 AM PDT491K
South Bay2026042712_SouthBay_hefs_csv_daily.zip27-Apr-2026 08:17 AM PDT371K
Southern California2026042712_SouthernCalifornia_hefs_csv_daily.zip27-Apr-2026 08:19 AM PDT847K
San Diego/Inland2026042712_SanDiego_Inland_hefs_csv_daily.zip27-Apr-2026 08:20 AM PDT577K
Tulare2026042712_Tulare_hefs_csv_daily.zip27-Apr-2026 07:52 AM PDT818K
San Joaquin2026042712_SanJoaquin_hefs_csv_daily.zip27-Apr-2026 07:33 AM PDT1279K
North San Joaquin2026042712_n_sanjoaquin_hefs_csv_daily.zip27-Apr-2026 07:52 AM PDT494K
East Sierra2026042712_EastSierra_hefs_csv_daily.zip27-Apr-2026 08:03 AM PDT1962K
Humboldt2026042712_Humboldt_hefs_csv_daily.zip27-Apr-2026 08:01 AM PDT661K
Water Supply Indices2026042712_WSI_hefs_csv_daily.zip27-Apr-2026 08:04 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