SPECIFIC CONDUCTANCE

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 microsiemens per centimeter. For details about the data, press here.

The highest reading, 553, occurred in 1/90, and the lowest, 69, in 2/94. All of the readings above 326 (10 percent of the samples), are shown in red and all that are below 215 (another 10 percent), are in blue.

 Averages by
Season and by
5-year Period:
 
(Overall = 273)
Jan-Mar279
Apr-Jun 259
Jul-Sep 284
Oct-Dec 272
1980-84 248
1985-89 280
1990-94 281
1995-99 293

YearJanFebMar AprMayJunJulAug SepOctNovDec
1980                   320 289 312
1981 285 315 258 175 265 295 280 287 273 302 240 270
1982 260 225 239 251 240 182 270 263 290 335 296 260
1983 165   200 152 288 227 252 259 265 211 215 185
219
1984 310   205 151 219 230 168 250 215 225 230 237
1985 290   270 265 260 253 280
280		 262 283 280 215 280
1986 280   280 255 280 275 280 270 275 310 335 270
1987 280   250 243 252 280 288 297 290 275 313 253
1988 335   270 295
300		 290
290		 308
321		 330
280		 350
335		 260 257
330		 322 320
1989 307 326
220		 295
264		 238
267		 212
245		 202
270		 293
308		 304
281		 321
294		 234 236 274
1990 497
553		 254
280		 299
242		 248
260		 268
230		 267
290		 300
342		 230
283		 286
288		 303
129		 261
242		 137
212
1991 286   243 286   283 300 315 304 315 302 261
1992 285   278 256 285 235 282 233 268 294
260		   263
1993   274 194
159
196.3		 245
245
247
216
219		 254
257
275
295		 285
304
308
308
288
315		 317
306
307
320		 325
284
315		 300
276
276
274
245		 305
272
339
396		 384
343		 223
329
1994 278 69
303
303		 231
260
195		 237
260
255
255		 275
263
200
268
325		 308
292
228
259
314		 297
317
326
319		 273
305
298
324
222
283		 322 318 349 250
1995 278 323 279 332 350 274 293
285		 322 204 270    
1996 430 384   274   290 349 372 293 206   190
1997   266   235 249
254		 317
313		 237
237
215		 309
309
320		 307
307
326
326
340