TOTAL SOLIDS

The measurements shown below were made at USGS station 01209710, located on the Norwalk River near the Perry Avenue bridge. All of the measurements are in milligrams per liter. For details about the data, press here.

The highest reading, 286, occurred in 1/90, and the lowest, 98, in 4/84. All of the readings above 208 (10 percent of the samples), are shown in red and all that are below 138 (another 11 percent), are in blue.

 Averages by
Season and by
5-year Period:
 
(Overall = 173)
Jan-Mar178
Apr-Jun 164
Jul-Sep 180
Oct-Dec 171
1980-84 167
1985-89 181
1990-94 169
1995-99 179

YearJanFebMar AprMayJunJulAug SepOctNovDec
1980                   200 195 222
1981 226 191 161 141 177 189 174 205 178 216 179 147
1982 171 154 175 152 163 142 180 208 179 222 188 245
1983 122   138 100 161 151 156 175 150 152 136 127
1984 189   129 98 166 176 125 178 135 147 139 161
1985 186   148 186 160 194 184 189 169 177 142 152
1986 166   160 161 187 191 179 176 172 200 207 167
1987 164   275 172 166 209 207 175 183 164 195 149
1988 191   171 178 199 185 210 220 155 197 198 196
1989     176 162 135 138 190 185 166 153 257 161
1990 286   177 157 155 169 190 170 206 102 146 128
1991 179   154 151   125 175 197 175 182 177 166
1992 164   156 162 161 150 168 170 175 176   152
1993   152   140   184 180   152 200   138
1994   176   156   164 182 190 190 186   144
1995   174   178   216 162 172 118 172    
1996 238 230   158   174 246 206 192 134   118
1997   150   128   219 172 191 198