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USGS Daily Statistics for Texas

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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 08150000 Llano Rv nr Junction, TX


Kimble County, Texas
Hydrologic Unit Code 12090204
Latitude  30°30'15", Longitude  99°44'03" NAD27
Drainage area 1,854  square miles
Contributing drainage area 1,849  square miles
Gage datum 1,634.40 feet above NAVD88
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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 1915-10-01 -> 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
1 140 110 116 107 220 219 127 107 357 179 259 118
2 121 111 114 113 274 166 224 241 308 165 253 118
3 118 126 113 258 249 196 180 160 297 130 731 118
4 116 123 115 128 198 182 144 97 338 129 417 117
5 115 127 113 117 135 291 257 97 365 151 164 117
6 114 117 111 126 131 180 156 106 229 384 179 116
7 113 114 114 123 132 150 115 103 197 166 146 117
8 113 113 112 116 152 131 106 92 503 471 147 122
9 113 113 110 109 143 128 101 114 307 310 143 120
10 113 111 110 122 171 169 99 121 203 189 136 117
11 112 111 110 114 319 177 341 154 126 141 135 116
12 112 111 123 111 247 211 157 194 123 172 133 116
13 111 110 113 107 186 155 336 154 111 947 126 116
14 111 109 110 199 256 1,350 161 117 106 480 125 116
15 110 109 109 327 245 266 110 171 144 330 298 115
16 110 109 109 310 166 267 140 242 741 565 366 114
17 110 112 116 161 209 280 115 133 542 207 562 113
18 157 110 112 144 218 393 118 108 320 192 159 113
19 120 109 117 123 199 194 111 110 173 262 137 112
20 146 109 127 115 137 139 109 113 140 182 131 126
21 155 113 126 114 208 125 156 189 229 142 128 123
22 119 165 117 112 160 129 552 281 517 139 126 122
23 115 234 112 122 166 134 619 273 455 236 125 118
24 116 158 111 237 195 418 428 168 549 378 124 116
25 114 159 118 209 351 558 183 151 266 160 123 115
26 112 142 166 128 257 268 149 142 250 229 123 115
27 111 120 173 191 346 232 114 110 185 163 122 114
28 112 118 120 206 203 138 102 312 159 151 121 148
29 112 121 124 197 647 195 97 169 188 657 120 241
30 111   126 174 413 150 97 356 151 339 119 126
31 110   110   228   115 137   229   454