10254970 NEW RIVER AT INTERNATIONAL BOUNDARY, AT CALEXICO, CA
LOCATION.-Lat 32°39'57", long 115°30'08", in SW 1/4 SE 1/4 sec.14, T.17 S., R.14 E., Imperial County,
Hydrologic Unit 18100200, on left bank, 200 ft downstream from bridge on Second Street, and 0.2 mi downstream
from International Boundary in Calexico.
PERIOD OF RECORD.-October 1979 to current year. October 1945 to September 1979, in files of Imperial Irrigation
District.
CHEMICAL DATA: Water years 1969-71, 1973-85.
BIOLOGICAL DATA: Water years 1973-81.
SPECIFIC CONDUCTANCE: Water years 1974-81.
WATER TEMPERATURE: Water years 1974-81.
SEDIMENT DATA: Water years 1975-85.
GAGE.-Water-stage recorder. Elevation of gage is 35 ft below sea level, from topographic map.
REMARKS.-Records excellent. Discharge represents seepage and return flow from irrigated areas. See schematic
diagram of Salton Sea Basin.
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 833 ft3/s, Dec. 9, 1982, Sept. 25, 1997, gage
height, 14.73 ft; minimum daily, 98 ft3/s, Nov. 23, 28-29, 1996.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 191 221 203 237 209 260 264 275 207 208 332 203
2 193 206 219 243 215 273 304 297 208 199 362 202
3 194 206 233 260 222 284 362 367 211 199 353 200
4 196 201 223 278 246 263 441 409 215 200 366 201
5 217 201 214 273 234 242 495 394 216 203 367 200
6 208 210 221 258 238 244 495 375 223 206 329 198
7 188 225 233 249 240 251 475 307 243 215 292 196
8 189 222 231 223 242 259 380 282 270 219 276 195
9 192 209 231 217 254 271 311 267 299 278 297 199
10 193 211 238 215 252 283 286 272 298 235 305 206
11 202 208 228 218 252 307 271 293 272 232 302 215
12 202 224 204 224 253 336 275 312 255 236 286 212
13 197 216 199 237 258 331 274 278 226 285 253 209
14 200 214 233 228 264 303 268 243 225 304 242 204
15 202 205 219 229 262 287 262 226 234 294 239 212
16 197 205 200 238 246 295 255 218 237 276 244 211
17 190 216 199 233 245 321 254 244 241 274 241 205
18 192 225 192 238 248 326 246 290 253 263 257 209
19 197 227 193 271 249 320 258 268 261 269 249 212
20 198 227 221 271 240 308 260 249 264 279 261 209
21 188 211 208 276 233 295 253 241 272 275 240 211
22 195 206 213 278 243 289 245 247 259 253 225 224
23 198 209 205 261 259 304 233 221 234 231 225 265
24 198 202 202 234 258 306 229 222 218 219 228 254
25 200 195 211 226 259 289 229 232 208 213 234 238
26 200 192 229 222 261 271 254 231 203 240 237 236
27 202 187 246 218 260 272 284 228 202 254 226 245
28 201 187 264 213 260 281 274 226 219 356 210 251
29 208 183 266 206 --- 290 265 219 219 340 200 245
30 217 198 259 201 --- 284 267 206 215 285 206 229
31 232 --- 252 208 --- 273 --- 212 --- 296 208 ---
TOTAL 6177 6249 6889 7383 6902 8918 8969 8351 7107 7836 8292 6496
MEAN 199 208 222 238 246 288 299 269 237 253 267 217
MAX 232 227 266 278 264 336 495 409 299 356 367 265
MIN 188 183 192 201 209 242 229 206 202 199 200 195
AC-FT 12250 12390 13660 14640 13690 17690 17790 16560 14100 15540 16450 12880
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1980 - 1999, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 222 212 255 258 266 282 290 265 223 232 265 244
MAX 370 334 374 366 375 395 452 389 321 394 441 399
(WY) 1984 1985 1987 1987 1987 1986 1986 1984 1984 1984 1984 1983
MIN 126 108 112 162 179 190 188 177 154 139 139 152
(WY) 1997 1997 1997 1996 1991 1995 1996 1990 1992 1994 1996 1992
SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1980 - 1999
ANNUAL TOTAL 90888 89569
ANNUAL MEAN 249 245 251
HIGHEST ANNUAL MEAN 362 1986
LOWEST ANNUAL MEAN 181 1996
HIGHEST DAILY MEAN 440 Mar 19 495 Apr 5 735 Dec 9
1982
LOWEST DAILY MEAN 175 Sep 26 183 Nov 29 98 Nov 23
1996
ANNUAL SEVEN-DAY MINIMUM 184 Sep 16 192 Nov 24 99 Nov 23
1996
INSTANTANEOUS PEAK FLOW 716 Jul 28 833 Dec 9
1982
INSTANTANEOUS PEAK STAGE 13.86 Jul 28 14.73 Dec 9
1982
ANNUAL RUNOFF (AC-FT) 180300 177700 181900
10 PERCENT EXCEEDS 342 298 365
50 PERCENT EXCEEDS 227 235 233
90 PERCENT EXCEEDS 197 200 159
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