US GEOLOGICAL SURVEY, OREGON WATER SCIENCE CENTER
WATER AVAILABILITY REPORT FOR DECEMBER 2025
------------------- Change ---------------------
Monthly mean in dis- Accumulated Runoff
discharge charge For the Period
------------------- from Oct. to Dec.
NRCS Cubic Percent previous ---------------------
SWSI feet per of month Percent
Station Basin second average (percent) of average
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Donner Und Blitzen Harney 66 122 32 121
nr Frenchglen
(*)Deep Creek Lake 175 273 447 203
above Adel County
(*)Chewaucan River Lake 161 230 204 176
near Paisley County
Williamson River Klamath 761 103 30 99
near Chiloquin
Owyhee River Owyhee 235 77 35 87
near Rome
(*)NF Malheur River Malheur 68 115 13 115
near Beulah
Grande Ronde R Grande Ronde 2,820 176 290 118
at Troy Powder/Burnt
Umatilla River Umatilla 385 177 655 128
nr Gibbon Lower John Day
John Day River Upper John Day 1,250 129 242 107
at Service Crk
(*)Little Deschutes Upper 100 78 85 67
River nr LaPine Deschutes
Hood River Lower Deschutes 2,240 176 203 121
nr Hood River Mt.Hood
Willamette River Willamette 38,300 91 184 77
at Salem
Wilson River North 5,180 194 214 136
near Tillamook Coast
Umpqua River Rogue/Umpqua 6,300 46 280 45
near Elkton
Rogue River Rogue/Umpqua 4,400 49 83 62
near Agness
SF Coquille River South Coast 963 53 148 51
at Powers
Chetco River South Coast 3,990 76 159 70
near Brookings
All data should be considered provisional and subject to revision.
Percent of average computed using 30-year base period, water years 1991-2020.
(*) provided by Oregon Water Resources Department
1/14/2026