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USGS Daily Statistics for the Nation

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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 50035000 RIO GRANDE DE MANATI AT CIALES, PR


Ciales Municipio, Puerto Rico
Hydrologic Unit Code 21010002
Latitude  18°19'27.95", Longitude  66°27'35.83" NAD27
Drainage area 134  square miles
Gage datum 140 feet above NGVD29
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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 1945-10-01 -> 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
1 208 242 170 152 335 280 103 118 202 322 340 265
2 202 194 133 170 350 239 109 118 202 301 366 335
3 179 194 131 167 292 185 104 115 301 296 465 347
4 164 228 134 180 227 209 104 106 262 279 420 325
5 238 224 200 175 327 202 107 102 287 284 392 266
6 259 260 169 195 353 202 103 100 412 494 349 276
7 199 194 163 154 455 193 100 97 368 842 367 227
8 183 152 137 211 485 233 106 111 267 546 541 242
9 197 155 142 244 594 171 113 100 286 655 644 327
10 181 143 128 270 408 167 100 105 607 406 376 432
11 242 160 117 274 372 161 94 100 280 469 287 576
12 277 149 200 302 341 161 101 161 259 401 397 317
13 200 146 176 278 544 146 115 117 380 346 457 342
14 213 143 160 238 474 124 109 308 247 374 429 263
15 229 137 123 243 368 128 114 140 274 408 383 242
16 245 144 110 222 364 153 145 145 519 462 415 227
17 197 133 115 313 668 175 112 169 341 480 361 198
18 179 117 153 370 994 183 148 132 686 402 356 241
19 195 128 164 354 374 133 141 126 528 363 338 206
20 197 138 162 436 410 120 121 129 1,220 319 341 205
21 196 165 134 421 357 119 102 147 681 360 368 199
22 230 139 144 271 267 135 108 322 716 367 345 186
23 185 124 137 366 332 122 99 442 413 487 355 180
24 162 117 127 298 355 117 119 286 364 419 335 194
25 159 124 145 308 310 117 102 210 358 381 348 216
26 164 117 212 275 291 145 94 184 287 474 297 188
27 171 136 239 209 284 128 90 230 310 472 493 200
28 161 153 195 240 342 132 96 236 302 441 305 234
29 155 117 192 307 262 122 89 189 311 440 258 201
30 156   214 329 225 112 205 329 378 501 267 168
31 176   154   216   141 448   434   170