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USGS Daily Statistics for Oregon

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 11493500 WILLIAMSON RIVER NEAR KLAMATH AGENCY, OR


Klamath County, Oregon
Hydrologic Unit Code 18010201
Latitude  42°44'23.73", Longitude 121°50'04.26" NAD83
Drainage area 1,290  square miles
Gage datum 4,487.42 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1954-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 154 169 276 383 269 127 51 16 6.2 16 46 122
2 151 173 280 386 262 124 50 15 6.2 17 48 125
3 149 180 284 389 256 123 48 14 6.2 17 49 129
4 147 182 285 388 252 118 46 14 6 18 51 130
5 145 182 286 385 248 114 44 13 5.9 18 52 130
6 144 181 287 381 245 112 42 13 6.1 19 53 130
7 141 183 292 378 240 109 41 12 6.2 19 55 132
8 140 183 296 376 234 107 39 12 6.4 20 57 136
9 140 184 298 372 229 104 38 11 6.5 20 59 139
10 141 184 302 370 222 101 36 11 6.6 21 62 140
11 144 185 306 368 216 98 35 11 6.8 23 65 143
12 145 187 310 363 211 96 34 10 6.9 23 68 144
13 148 190 312 358 206 93 32 9.9 7.1 24 70 144
14 150 192 317 353 201 90 31 9.6 7.4 25 73 146
15 154 196 323 350 196 88 30 9.4 7.6 26 76 147
16 157 202 328 346 190 86 28 9 7.6 27 78 148
17 159 208 332 342 185 83 27 8.6 7.9 27 81 149
18 160 214 334 338 181 81 26 8.2 8.2 28 83 148
19 161 220 335 333 176 78 25 7.9 8.9 28 86 149
20 162 226 337 327 173 76 24 7.7 9.3 30 88 150
21 163 232 338 322 169 74 23 7.6 9.7 31 91 152
22 165 235 338 316 165 71 22 7.4 10 32 95 160
23 167 242 339 310 159 69 21 7.4 10 33 98 165
24 167 248 340 305 155 66 21 7.2 10 34 101 165
25 168 254 348 300 151 64 20 7 11 35 105 167
26 168 261 352 297 147 62 19 6.8 11 37 109 166
27 166 265 353 291 144 60 18 6.5 12 39 112 163
28 167 272 358 286 140 58 18 6.2 13 40 115 161
29 169 280 364 282 137 56 17 6 13 42 118 156
30 170   370 275 133 53 17 6.1 14 43 120 153
31 171   376   131   16 6.2   45   155