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USGS Daily Statistics for Puerto Rico

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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 50057000 RIO GURABO AT GURABO, PR


Gurabo Municipio, Puerto Rico
Hydrologic Unit Code 21010005
Latitude  18°15'30.56", Longitude  65°58'05.07" NAD27
Drainage area 60.2  square miles
Gage datum 150.0 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 1959-10-01 -> 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 72 56 54 48 112 114 170 112 95 146 220 150
2 66 50 36 46 98 163 167 123 94 163 187 199
3 58 47 34 46 70 145 131 161 131 206 186 210
4 58 45 34 41 77 122 105 106 228 167 189 140
5 85 48 44 38 100 136 179 87 366 152 257 110
6 108 61 52 46 118 113 132 86 526 413 290 163
7 74 61 39 30 79 114 115 71 201 411 302 267
8 58 46 41 81 94 88 108 94 197 225 357 282
9 57 43 45 39 96 91 107 77 141 424 371 195
10 60 43 41 35 106 135 148 187 518 246 287 390
11 60 43 29 78 106 100 165 94 178 235 262 208
12 60 39 48 42 86 110 91 113 158 184 341 143
13 63 42 36 46 137 113 124 115 302 176 331 104
14 83 41 29 79 123 96 116 194 133 278 212 102
15 103 49 29 44 181 147 122 205 166 205 236 88
16 79 69 30 48 98 168 108 149 309 279 194 96
17 62 58 29 225 202 189 99 130 264 176 265 81
18 59 42 29 73 316 121 148 111 653 180 224 81
19 53 37 27 54 124 160 206 101 455 142 151 79
20 68 43 30 59 189 135 162 100 786 123 131 83
21 60 40 26 79 314 143 119 258 288 177 144 68
22 59 39 52 84 137 173 137 293 328 297 179 74
23 53 34 48 93 169 113 134 348 197 224 164 78
24 49 32 35 70 130 99 94 350 145 225 295 82
25 52 52 33 48 121 76 79 169 146 199 228 123
26 54 44 38 54 158 93 76 132 122 301 139 85
27 51 40 35 47 177 104 80 240 131 283 429 94
28 46 40 36 58 195 75 85 146 139 252 170 84
29 54 41 66 113 112 111 73 158 175 196 146 98
30 49   51 74 171 130 237 232 145 188 172 84
31 51   59   125   100 286   180   99