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

Klamath2026031912_klamath_hefs_csv_daily.zip19-Mar-2026 08:18 AM PDT1179K
North Coast2026031912_NorthCoast_hefs_csv_daily.zip19-Mar-2026 08:30 AM PDT1132K
Russian/Napa2026031912_RussianNapa_hefs_csv_daily.zip19-Mar-2026 08:30 AM PDT1374K
Upper Sacramento2026031912_UpperSacramento_hefs_csv_daily.zip19-Mar-2026 07:47 AM PDT1406K
Feather/Yuba2026031912_FeatherYuba_hefs_csv_daily.zip19-Mar-2026 07:47 AM PDT2146K
Cache/Putah2026031912_cacheputah_hefs_csv_daily.zip19-Mar-2026 08:06 AM PDT192K
American2026031912_american_hefs_csv_daily.zip19-Mar-2026 07:45 AM PDT1754K
Salinas/Pajaro2026031912_SalinasPajaro_hefs_csv_daily.zip19-Mar-2026 08:37 AM PDT483K
South Bay2026031912_SouthBay_hefs_csv_daily.zip19-Mar-2026 08:32 AM PDT376K
Southern California2026031912_SouthernCalifornia_hefs_csv_daily.zip19-Mar-2026 08:38 AM PDT899K
San Diego/Inland2026031912_SanDiego_Inland_hefs_csv_daily.zip19-Mar-2026 08:45 AM PDT555K
Tulare2026031912_Tulare_hefs_csv_daily.zip19-Mar-2026 07:45 AM PDT828K
San Joaquin2026031912_SanJoaquin_hefs_csv_daily.zip19-Mar-2026 08:05 AM PDT1276K
North San Joaquin2026031912_n_sanjoaquin_hefs_csv_daily.zip19-Mar-2026 08:02 AM PDT518K
East Sierra2026031912_EastSierra_hefs_csv_daily.zip19-Mar-2026 08:09 AM PDT1978K
Humboldt2026031912_Humboldt_hefs_csv_daily.zip19-Mar-2026 08:14 AM PDT704K
Water Supply Indices2026031912_WSI_hefs_csv_daily.zip19-Mar-2026 08:47 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

Enter desired location(s) below (some older browsers may allow only one file download at a time):

Forecast Groups Archive

Forecast Group

Start Date

End Date