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

Klamath2026101512_klamath_hefs_csv_daily.zip15-Oct-2026 08:49 AM PDT1202K
North Coast2026101512_NorthCoast_hefs_csv_daily.zip15-Oct-2026 07:49 AM PDT1141K
Russian/Napa2026101512_RussianNapa_hefs_csv_daily.zip15-Oct-2026 07:58 AM PDT1560K
Upper Sacramento2026101512_UpperSacramento_hefs_csv_daily.zip15-Oct-2026 07:22 AM PDT1412K
Feather/Yuba2026101512_FeatherYuba_hefs_csv_daily.zip15-Oct-2026 07:22 AM PDT2180K
Cache/Putah2026101512_cacheputah_hefs_csv_daily.zip15-Oct-2026 07:34 AM PDT216K
American2026101512_american_hefs_csv_daily.zip15-Oct-2026 07:20 AM PDT1794K
Salinas/Pajaro2026101512_SalinasPajaro_hefs_csv_daily.zip15-Oct-2026 08:05 AM PDT583K
South Bay2026101512_SouthBay_hefs_csv_daily.zip15-Oct-2026 08:02 AM PDT463K
Southern California2026101512_SouthernCalifornia_hefs_csv_daily.zip15-Oct-2026 08:09 AM PDT1135K
San Diego/Inland2026101512_SanDiego_Inland_hefs_csv_daily.zip15-Oct-2026 08:08 AM PDT724K
Tulare2026101512_Tulare_hefs_csv_daily.zip15-Oct-2026 07:34 AM PDT862K
San Joaquin2026101512_SanJoaquin_hefs_csv_daily.zip15-Oct-2026 07:51 AM PDT1309K
North San Joaquin2026101512_n_sanjoaquin_hefs_csv_daily.zip15-Oct-2026 07:48 AM PDT522K
East Sierra2026101512_EastSierra_hefs_csv_daily.zip15-Oct-2026 08:09 AM PDT2086K
Humboldt2026101512_Humboldt_hefs_csv_daily.zip15-Oct-2026 08:47 AM PDT777K
Water Supply Indices2026101512_WSI_hefs_csv_daily.zip15-Oct-2026 08:19 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