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

Klamath2026040712_klamath_hefs_csv_daily.zip07-Apr-2026 06:59 AM PDT1189K
North Coast2026040712_NorthCoast_hefs_csv_daily.zip07-Apr-2026 07:44 AM PDT1154K
Russian/Napa2026040712_RussianNapa_hefs_csv_daily.zip07-Apr-2026 07:33 AM PDT1439K
Upper Sacramento2026040712_UpperSacramento_hefs_csv_daily.zip07-Apr-2026 07:01 AM PDT1429K
Feather/Yuba2026040712_FeatherYuba_hefs_csv_daily.zip07-Apr-2026 07:07 AM PDT2164K
Cache/Putah2026040712_cacheputah_hefs_csv_daily.zip07-Apr-2026 07:49 AM PDT195K
American2026040712_american_hefs_csv_daily.zip07-Apr-2026 07:32 AM PDT1776K
Salinas/Pajaro2026040712_SalinasPajaro_hefs_csv_daily.zip07-Apr-2026 07:34 AM PDT522K
South Bay2026040712_SouthBay_hefs_csv_daily.zip07-Apr-2026 07:32 AM PDT400K
Southern California2026040712_SouthernCalifornia_hefs_csv_daily.zip07-Apr-2026 07:27 AM PDT966K
San Diego/Inland2026040712_SanDiego_Inland_hefs_csv_daily.zip07-Apr-2026 07:27 AM PDT608K
Tulare2026040712_Tulare_hefs_csv_daily.zip07-Apr-2026 07:47 AM PDT831K
San Joaquin2026040712_SanJoaquin_hefs_csv_daily.zip07-Apr-2026 07:24 AM PDT1307K
North San Joaquin2026040712_n_sanjoaquin_hefs_csv_daily.zip07-Apr-2026 07:12 AM PDT511K
East Sierra2026040712_EastSierra_hefs_csv_daily.zip07-Apr-2026 07:34 AM PDT1991K
Humboldt2026040712_Humboldt_hefs_csv_daily.zip07-Apr-2026 07:49 AM PDT738K
Water Supply Indices2026040712_WSI_hefs_csv_daily.zip07-Apr-2026 07:51 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