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

Klamath2026031112_klamath_hefs_csv_daily.zip11-Mar-2026 08:44 AM PDT1190K
North Coast2026031112_NorthCoast_hefs_csv_daily.zip11-Mar-2026 08:43 AM PDT1136K
Russian/Napa2026031112_RussianNapa_hefs_csv_daily.zip11-Mar-2026 08:44 AM PDT1401K
Upper Sacramento2026031112_UpperSacramento_hefs_csv_daily.zip11-Mar-2026 08:05 AM PDT1421K
Feather/Yuba2026031112_FeatherYuba_hefs_csv_daily.zip11-Mar-2026 08:11 AM PDT2157K
Cache/Putah2026031112_cacheputah_hefs_csv_daily.zip11-Mar-2026 08:26 AM PDT199K
American2026031112_american_hefs_csv_daily.zip11-Mar-2026 08:10 AM PDT1765K
Salinas/Pajaro2026031112_SalinasPajaro_hefs_csv_daily.zip11-Mar-2026 08:50 AM PDT497K
South Bay2026031112_SouthBay_hefs_csv_daily.zip11-Mar-2026 08:45 AM PDT386K
Southern California2026031112_SouthernCalifornia_hefs_csv_daily.zip11-Mar-2026 12:24 PM PDT931K
San Diego/Inland2026031112_SanDiego_Inland_hefs_csv_daily.zip11-Mar-2026 08:55 AM PDT550K
Tulare2026031112_Tulare_hefs_csv_daily.zip11-Mar-2026 08:21 AM PDT843K
San Joaquin2026031112_SanJoaquin_hefs_csv_daily.zip11-Mar-2026 08:24 AM PDT1286K
North San Joaquin2026031112_n_sanjoaquin_hefs_csv_daily.zip11-Mar-2026 08:27 AM PDT509K
East Sierra2026031112_EastSierra_hefs_csv_daily.zip11-Mar-2026 08:16 AM PDT2004K
Humboldt2026031112_Humboldt_hefs_csv_daily.zip11-Mar-2026 08:01 AM PDT734K
Water Supply Indices2026031112_WSI_hefs_csv_daily.zip11-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