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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 -> 2019-09-30)

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
1 483 65 247 275 61 84 148 299 16 66 99 171
2 307 260 256 101 119 38 239 486 56 475 201 179
3 292 105 384 73 123 21 86 302 138 150 133 117
4 273 115 180 162 270 214 447 231 214 8.9 296 360
5 134 91 104 273 155 162 419 349 257 87 318 180
6 258 101 118 170 231 85 309 253 209 17 86 91
7 207 372 41 59 405 131 240 150 197 227 46 92
8 198 378 90 192 233 212 73 35 110 109 320 87
9 153 358 196 420 242 293 78 78 299 355 364 94
10 144 371 213 301 447 270 41 189 325 474 400 239
11 100 148 167 278 93 37 154 229 216 211 209 317
12 91 108 293 230 88 123 273 318 221 59 275 192
13 127 203 191 408 231 179 342 179 37 83 425 114
14 67 269 318 246 338 218 214 87 68 145 223 142
15 87 236 386 247 289 330 129 115 38 38 108 108
16 238 82 319 230 365 398 342 13 12 22 368 93
17 122 394 350 26 171 398 194 30 62 36 245 238
18 26 348 303 44 194 86 270 45 7.1 12 154 245
19 63 270 217 42 345 250 254 275 3.4 159 201 272
20 68 419 183 243 269 333 221 169 57 316 114 174
21 45 175 180 231 178 297 153 362 114 71 228 112
22 256 285 153 274 97 71 212 490 187 99 286 327
23 186 215 107 318 116 90 407 224 67 41 32 332
24 493 105 79 261 129 57 106 134 3.8 203 129 335
25 299 247 124 324 154 38 52 28 13 268 249 414
26 258 37 266 423 114 27 129 35 91 315 409 73
27 128 105 277 285 84 58 129 24 352 275 123 38
28 173 188 196 132 79 33 101 255 266 49 37 87
29 149 7.1 293 153 106 40 15 266 298 52 72 54
30 97   492 141 170 151 64 99 105 185 23 101
31 104   624   96   89 185   150   376