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

Klamath2026042912_klamath_hefs_csv_daily.zip29-Apr-2026 08:22 AM PDT1161K
North Coast2026042912_NorthCoast_hefs_csv_daily.zip29-Apr-2026 08:32 AM PDT1123K
Russian/Napa2026042912_RussianNapa_hefs_csv_daily.zip29-Apr-2026 08:31 AM PDT1329K
Upper Sacramento2026042912_UpperSacramento_hefs_csv_daily.zip29-Apr-2026 07:34 AM PDT1405K
Feather/Yuba2026042912_FeatherYuba_hefs_csv_daily.zip29-Apr-2026 08:02 AM PDT2140K
Cache/Putah2026042912_cacheputah_hefs_csv_daily.zip29-Apr-2026 08:20 AM PDT202K
American2026042912_american_hefs_csv_daily.zip29-Apr-2026 08:00 AM PDT1755K
Salinas/Pajaro2026042912_SalinasPajaro_hefs_csv_daily.zip29-Apr-2026 08:40 AM PDT493K
South Bay2026042912_SouthBay_hefs_csv_daily.zip29-Apr-2026 08:35 AM PDT383K
Southern California2026042912_SouthernCalifornia_hefs_csv_daily.zip29-Apr-2026 08:41 AM PDT862K
San Diego/Inland2026042912_SanDiego_Inland_hefs_csv_daily.zip29-Apr-2026 08:40 AM PDT587K
Tulare2026042912_Tulare_hefs_csv_daily.zip29-Apr-2026 08:20 AM PDT809K
San Joaquin2026042912_SanJoaquin_hefs_csv_daily.zip29-Apr-2026 08:36 AM PDT1278K
North San Joaquin2026042912_n_sanjoaquin_hefs_csv_daily.zip29-Apr-2026 08:19 AM PDT506K
East Sierra2026042912_EastSierra_hefs_csv_daily.zip29-Apr-2026 08:02 AM PDT1953K
Humboldt2026042912_Humboldt_hefs_csv_daily.zip29-Apr-2026 08:20 AM PDT638K
Water Supply Indices2026042912_WSI_hefs_csv_daily.zip29-Apr-2026 08:40 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

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