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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 03078000 CASSELMAN RIVER AT GRANTSVILLE, MD


Garrett County, Maryland
Hydrologic Unit Code 05020006
Latitude  39°42'07.9", Longitude  79°08'11.0" NAD83
Drainage area 64.2  square miles
Gage datum 2,088.56 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 1946-10-01 -> 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
1 206 162 264 268 147 99 56 40 49 35 59 141
2 205 165 231 291 145 99 43 44 30 38 61 129
3 187 178 217 267 158 102 51 35 21 39 61 132
4 171 174 286 258 183 104 76 35 22 40 69 138
5 185 169 350 248 192 94 52 38 21 37 92 128
6 156 165 309 225 191 110 54 68 42 34 77 125
7 151 177 249 233 188 106 45 40 49 33 76 158
8 149 175 235 215 194 87 50 34 34 34 83 154
9 142 166 228 236 187 80 60 43 77 49 73 162
10 155 178 246 229 181 86 74 37 48 43 69 165
11 163 182 262 203 176 79 68 31 30 42 74 161
12 180 178 262 224 173 74 50 47 31 37 98 157
13 164 183 316 239 166 90 63 43 38 32 82 150
14 144 182 301 212 152 83 51 31 48 33 71 151
15 156 184 284 219 157 67 49 31 32 69 73 154
16 153 192 236 218 173 71 39 26 32 61 91 154
17 140 178 236 205 155 74 38 35 45 40 88 146
18 146 210 226 175 182 74 32 49 49 43 79 152
19 188 237 242 168 164 65 50 38 60 42 90 145
20 158 211 275 166 149 75 39 40 38 41 100 140
21 139 229 284 155 138 86 34 48 47 43 93 149
22 129 220 274 163 124 68 36 41 57 41 103 150
23 148 247 256 164 126 92 47 42 42 49 98 156
24 189 256 291 175 126 88 39 32 33 59 91 158
25 208 263 256 184 116 65 33 24 41 49 92 170
26 209 224 238 170 110 51 29 20 42 44 107 163
27 184 205 237 160 112 63 34 23 44 49 110 152
28 184 228 266 169 123 61 29 31 54 49 148 136
29 180 232 271 169 116 52 58 24 40 73 142 142
30 185   258 169 94 48 40 26 41 66 123 162
31 172   251   104   46 32   62   166