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USGS Daily Statistics for Hawaii

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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 16704000 Wailuku River at Piihonua, HI


Hawaii County, Hawaii
Hydrologic Unit Code 20010000
Latitude  19°42'43.7", Longitude 155°09'02.7" NAD83
Drainage area 220  square miles
Contributing drainage area 148.6  square miles
Gage datum 1,090 feet above LMSL
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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 1927-10-01 -> 2023-09-30)

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
1 213 264 570 350 303 118 153 317 221 166 215 440
2 217 339 397 303 256 110 131 344 169 171 287 620
3 238 304 390 345 262 102 107 232 150 204 168 353
4 245 229 281 271 258 110 137 274 161 171 157 277
5 302 169 280 261 220 107 144 227 131 153 164 267
6 250 141 423 259 254 109 218 207 229 141 212 294
7 401 153 356 249 270 101 211 315 119 151 194 257
8 470 117 444 340 234 103 176 391 97 138 186 245
9 303 140 470 414 210 82 152 316 86 148 268 373
10 344 183 388 540 231 83 136 365 103 133 303 422
11 408 154 305 495 234 82 112 305 116 135 505 412
12 342 165 348 394 222 91 117 388 118 248 478 299
13 257 208 460 366 233 96 169 237 127 124 378 469
14 224 235 514 344 216 110 202 247 135 99 283 484
15 305 363 374 359 206 98 164 271 175 162 379 303
16 334 278 274 417 154 98 234 213 147 157 434 252
17 203 352 438 423 145 111 264 318 215 172 489 239
18 211 453 359 432 160 100 227 203 203 194 620 358
19 288 361 370 394 169 118 174 181 199 199 433 343
20 232 354 271 342 176 94 245 197 179 149 785 376
21 169 303 276 278 181 88 335 151 198 127 436 342
22 198 274 312 325 139 103 361 184 120 168 447 414
23 195 282 395 372 194 105 217 541 148 183 405 284
24 189 351 486 391 199 131 212 511 150 180 327 236
25 250 387 330 319 244 156 202 345 120 140 301 400
26 425 372 347 291 208 165 179 270 179 146 405 419
27 250 434 334 284 149 139 176 177 209 212 326 245
28 222 480 292 258 161 134 149 165 156 225 310 230
29 252 517 259 323 150 153 173 144 153 202 344 239
30 288   353 328 125 223 206 194 265 217 405 381
31 343   370   117   184 216   259   263