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USGS Daily Statistics for Connecticut

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ICE EFFECTS ON STREAMFLOW - During winter, ice formation may cause stage and discharge values to appear higher than expected. Ice effects may be minor (occurring only at night and early morning) with baseline flows obvious, or the effects may be major (stage constantly increases over several days or weeks) resulting in greatly erroneous discharge. Streamgages experiencing minor ice conditions will continue to display stage and discharge values to enable users to estimate the approximate base-line stage and discharge. Streamgages experiencing major ice conditions will have the discharge record temporarily disabled to prevent use of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Daily mean discharges during periods of ice effect will be estimated after detailed data analysis.

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 01120790 NATCHAUG RIVER AT MARCY RD. NEAR CHAPLIN, CT


Windham County, Connecticut
Hydrologic Unit Code 01100002
Latitude  41°48'58.21", Longitude  72°06'22.21" NAD83
Drainage area 66.5  square miles
Gage datum 357 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 2006-10-01 -> 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
1 164 127 213 341 203 102 54 47 33 63 105 140
2 159 165 236 299 168 119 91 36 28 65 99 163
3 135 138 284 281 146 106 115 36 26 93 139 158
4 138 133 222 318 132 96 74 40 23 80 120 133
5 145 145 230 336 127 89 58 48 23 68 104 110
6 170 146 234 284 132 97 46 42 28 55 108 112
7 150 165 411 322 127 106 43 47 118 55 115 127
8 154 154 331 290 117 212 52 46 180 49 106 197
9 152 131 345 248 117 119 49 40 121 45 142 144
10 148 124 252 219 128 96 45 52 74 41 137 161
11 167 152 312 200 112 118 43 47 56 41 122 148
12 218 169 308 202 97 158 47 42 49 68 102 277
13 283 187 315 216 86 135 50 41 81 59 128 247
14 193 239 303 182 106 212 50 44 63 58 131 181
15 171 173 299 186 106 148 38 89 52 61 115 148
16 152 162 283 492 124 118 34 132 39 60 127 136
17 136 166 240 486 159 101 29 66 32 58 183 135
18 143 213 206 290 179 92 33 45 54 53 151 134
19 165 215 187 215 151 100 41 36 57 58 124 121
20 139 183 210 192 131 80 32 28 39 78 123 106
21 121 156 194 228 106 84 27 24 33 69 114 146
22 113 142 210 200 97 75 25 25 30 63 99 183
23 118 140 241 232 89 63 33 26 30 54 122 166
24 209 178 232 191 98 60 111 22 51 54 177 187
25 260 292 200 161 89 55 90 19 68 63 156 194
26 213 324 186 172 99 60 71 18 189 82 140 159
27 169 260 238 181 87 53 62 22 109 76 184 179
28 157 254 223 178 79 61 53 179 89 134 156 203
29 132 174 256 199 68 68 46 144 89 161 124 186
30 124   513 164 75 51 36 65 77 198 139 176
31 138   419   71   39 42   131   144