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USGS Daily Statistics for the Nation

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
1 513 69 205 421 222 125 160 265 175 112 153 142
2 231 210 197 263 111 81 230 312 201 219 221 94
3 219 95 279 210 133 69 124 224 263 128 176 68
4 142 119 223 188 256 137 304 142 217 11 158 220
5 71 129 201 188 131 116 371 185 166 88 168 132
6 133 111 232 124 173 208 350 204 130 158 51 120
7 150 254 86 44 304 149 225 130 209 173 70 132
8 184 237 86 100 274 237 52 99 161 85 217 127
9 108 212 136 248 140 368 52 261 264 202 288 169
10 123 216 267 162 246 227 23 275 180 223 354 212
11 107 92 116 153 66 77 88 276 259 112 217 243
12 117 74 218 197 58 107 172 391 265 110 287 161
13 180 187 164 364 143 141 230 199 201 173 324 85
14 180 273 211 162 236 123 161 70 181 242 195 98
15 82 156 269 186 256 240 177 99 39 106 161 106
16 268 76 230 289 301 228 266 99 46 106 214 76
17 190 225 186 190 123 301 202 89 69 156 167 221
18 68 241 226 145 148 154 233 171 142 224 158 178
19 151 256 165 213 247 258 282 379 149 124 260 236
20 237 287 96 252 194 200 181 145 128 167 176 190
21 99 146 115 273 213 175 137 267 171 71 135 146
22 173 248 80 288 289 42 203 377 153 78 173 244
23 199 167 97 324 233 63 327 182 203 37 50 291
24 315 88 84 190 167 148 88 162 221 220 204 381
25 173 162 91 213 141 146 76 38 225 227 281 565
26 209 68 210 229 93 169 164 111 277 257 350 145
27 97 184 226 227 73 249 198 16 281 160 138 158
28 186 209 222 212 75 36 189 272 248 47 225 102
29 181 223 298 221 98 23 174 194 182 79 132 77
30 130   378 331 190 91 129 75 132 138 141 175
31 111   494   79   64 189   182   409