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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 06085800 Sun River at Simms MT


Cascade County, Montana
Hydrologic Unit Code 10030104
Latitude  47°30'05.86", Longitude 111°55'54.89" NAD83
Drainage area 1,296  square miles
Gage datum 3,551.08 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 1965-10-01 -> 2024-09-30)

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
1 180 199 203 250 541 2,500 829 129 162 164 216 209
2 185 200 204 251 560 2,410 804 133 155 178 220 210
3 186 200 198 247 601 2,290 725 132 149 185 221 214
4 192 201 197 246 627 2,230 707 129 145 190 218 206
5 191 203 201 249 657 2,240 643 132 141 193 220 199
6 190 203 204 258 710 2,450 600 135 139 194 221 202
7 194 203 206 268 767 2,630 521 140 142 192 221 208
8 198 202 215 264 837 2,480 462 151 142 189 225 205
9 199 201 217 274 892 2,350 429 148 141 193 230 199
10 194 202 220 277 937 2,240 386 147 139 195 228 203
11 190 204 217 278 1,060 2,030 339 146 140 195 222 208
12 192 208 222 279 1,130 1,870 293 146 145 197 224 207
13 190 211 221 288 1,080 1,820 262 146 145 203 228 200
14 192 210 226 295 1,110 1,910 239 147 142 210 227 196
15 196 209 230 294 1,180 1,830 216 152 143 217 227 200
16 206 209 240 311 1,130 1,780 203 156 144 218 228 202
17 207 208 246 322 1,200 1,760 185 156 142 216 224 199
18 213 205 250 318 1,320 1,730 181 156 143 216 224 190
19 214 201 235 321 1,380 2,490 177 154 146 223 228 187
20 212 201 245 316 1,360 2,610 184 160 145 223 225 185
21 210 197 266 317 1,310 2,110 177 159 144 223 224 183
22 212 195 265 308 1,310 1,790 162 162 145 223 227 179
23 212 194 262 301 1,320 1,640 149 166 145 222 229 177
24 212 198 256 309 1,400 1,490 140 174 139 220 227 179
25 214 199 252 344 1,550 1,420 135 174 136 219 224 184
26 212 199 253 370 1,800 1,320 129 171 139 221 221 184
27 208 202 253 381 2,080 1,140 130 164 144 222 215 190
28 204 202 249 435 2,190 948 128 156 146 214 210 187
29 203 194 247 487 2,190 802 123 153 146 209 209 190
30 203   247 513 2,270 828 123 153 152 209 206 184
31 201   252   2,480   126 160   211   181