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USGS Daily Statistics for Arizona

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Welcome to the NWIS-Web for the Arizona Water Science Center


The majority of USGS Gaging Stations are funded though a cooperative program between the USGS other interested agencies.
Follow this link for information on the Cooperative Water Program with the USGS.

Arizona Water Science Center Home Page
Colorado Basin River Forecast Center (CBRFC) - provided by the National Weather Service, AHPS. CBRFC on an interactive map.
Threatened and Endangered USGS Gaging Stations in Arizona

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 -> 2021-09-30)

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
1 528 50 207 373 87 64 127 257 176 96 148 203
2 272 196 195 94 118 71 205 476 157 347 170 135
3 307 81 310 94 103 53 75 281 159 148 103 89
4 211 87 182 261 205 181 392 199 181 9.5 234 271
5 102 131 115 274 119 150 445 300 215 60 228 138
6 194 153 201 134 219 291 293 219 195 72 66 108
7 212 356 42 46 319 146 211 130 187 188 78 92
8 256 295 71 147 226 171 63 127 108 112 288 122
9 145 273 155 322 182 284 68 317 263 255 288 117
10 182 321 379 233 363 303 36 265 272 342 325 213
11 114 131 162 225 71 75 147 197 181 165 201 282
12 103 83 222 290 68 112 291 273 241 52 233 164
13 114 272 146 500 207 199 342 155 303 90 342 88
14 77 379 266 202 319 173 221 76 297 228 235 108
15 80 202 301 191 351 277 148 100 44 115 217 83
16 338 86 269 192 400 303 294 14 33 45 279 71
17 275 306 264 38 133 305 167 29 65 43 195 196
18 22 359 230 125 166 106 232 41 14 16 152 216
19 72 310 164 82 310 333 219 239 33 116 263 255
20 240 425 139 280 238 280 191 146 75 227 196 184
21 86 186 169 314 168 258 131 310 143 63 172 108
22 215 220 117 393 228 56 183 420 144 101 220 260
23 171 165 84 415 213 68 409 192 64 42 25 251
24 422 80 61 260 101 60 136 114 23 276 115 286
25 253 186 96 312 117 59 97 24 182 297 212 472
26 218 53 249 326 87 196 111 30 310 272 417 188
27 97 143 331 217 72 359 111 22 258 224 130 235
28 182 261 266 188 99 49 92 319 193 52 191 122
29 125 334 323 236 113 31 18 276 227 66 80 42
30 118   460 129 159 115 64 103 125 187 78 80
31 118   537   75   77 306   184   349