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USGS Daily Statistics for California

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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 09527630 BROCK RESERVOIR INLET NEAR CALEXICO, CA


Imperial County, California
Hydrologic Unit Code 18100204
Latitude  32°42'34.0", Longitude 115°01'28.7" NAD27
Gage datum 160 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 2013-10-01 -> 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
1 401 75 209 414 136 80 152 288 181 112 153 154
2 199 228 201 281 101 65 218 340 219 219 221 102
3 224 103 284 226 145 41 128 244 263 128 176 73
4 154 127 226 204 277 145 329 154 217 11 158 239
5 76 138 193 204 142 126 390 201 166 88 168 112
6 144 120 236 105 189 227 326 222 130 158 51 108
7 159 276 62 36 326 163 210 141 209 173 70 134
8 189 258 66 109 295 234 57 108 161 85 217 135
9 110 231 134 271 152 392 56 227 264 202 288 184
10 134 235 291 176 268 230 25 190 180 223 354 231
11 116 97 127 167 54 66 96 260 259 112 217 256
12 122 79 226 214 61 116 187 425 265 110 238 146
13 196 203 144 366 152 154 227 216 201 173 286 64
14 196 287 229 155 254 134 172 74 181 242 186 100
15 88 169 293 202 278 248 193 108 39 106 164 113
16 292 82 251 294 294 233 277 108 46 106 232 82
17 207 245 202 174 98 293 217 96 69 156 175 240
18 73 263 246 127 127 136 254 125 142 224 172 193
19 160 278 179 142 266 252 233 269 149 124 284 245
20 258 312 104 268 211 207 155 120 128 167 192 177
21 79 142 124 298 232 190 130 287 171 71 146 156
22 176 240 87 314 315 43 221 412 153 78 187 218
23 146 170 106 353 242 63 357 198 203 37 52 273
24 309 92 90 207 115 160 95 171 221 220 157 388
25 187 163 98 232 151 159 81 30 225 227 282 506
26 170 73 228 248 90 184 148 47 277 257 377 157
27 81 159 244 209 57 272 185 17 281 160 137 172
28 162 209 197 216 73 38 201 296 248 47 150 110
29 168 223 246 215 90 25 153 211 182 79 123 83
30 135   348 272 167 99 61 81 132 138 153 190
31 120   480   84   64 205   182   410