SACO RIVER BASIN

01064500 SACO RIVER NEAR CONWAY, NH

LOCATION.--Lat 43°59'27" Long 71°, Carroll County, Hydrologic Unit 01060002, on left bank at Odell Falls, 1.8 mi downstream from Swift River and Conway.
DRAINAGE AREA.--385 mi².
PERIOD OF RECORD.--Discharge records: August 1903 to December 1909, January 1910 to June 1912 (gage heights only), February 1929 to current year. Monthly discharge only for some periods, published in WSP 1301. Prior to 1912, published as "at Center Conway."
REVISED RECORDS.--WSP 1301: 1908-09. WDR ME-81-l: Drainage area. WRD ME-87-1: 1936 (M), 1951 (M), 1953 (M), 1960 (M), 1977 (M).
GAGE.--Water-stage recorder. Datum of gage is 418.19 ft above sea level. August 26, 1903, to June 30, 1912, nonrecording gage at site 0.8 mi downstream at different datum.
REMARKS.--Records good except for periods of ice effect, Dec. 31 to Feb. 18, and Mar. 7-25, and periods of no gage- height record, Nov. 13-17, Dec. 2, and July 10-16, which are fair. Satellite gage-height telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 47,200 ft³/s, March 27, 1953, gage height, 17.20 ft, maximum gage height, 19.03 ft, March 7, 1979, (ice jam); minimum discharge, 40 ft³/s, March 16, 1932, gage height, 1.61 ft.
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 8,700 ft³/s amd maximum (*): Discharge Gage height Discharge Gage height Date Time (ft³/s) (ft) Date Time (ft³/s) (ft) Oct. 22 0415 * 23,000 * 11.54 Dec. 2 -- e 11,000 -- Nov. 9 2115 11,300 8.76 Apr. 19 0930 14,100 9.48 Minimum discharge, 191 ft³/s, October 7 and 8, gage height, 2.33 ft.

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP

1 289 1080 724 e1080 e432 1060 1160 3660 1670 349 328 398 2 247 935 e11000 e1130 e428 1000 982 5240 1630 326 312 358 3 225 842 5280 e1050 e410 1510 942 3500 1370 401 300 347 4 210 772 2830 e1000 e393 1170 1070 3240 1250 3240 299 345 5 201 730 2090 e950 e386 1010 1350 2740 1140 1220 290 310 6 195 695 1710 e1050 e404 981 1770 2590 1060 821 282 286 7 194 679 1460 e900 e387 e860 2940 3610 1010 634 272 271 8 194 1520 1410 e840 e372 e740 3700 2530 958 556 255 318 9 327 7090 1280 e830 e347 e790 2260 2180 926 484 242 307 10 515 5300 1140 e800 e377 e730 1720 2020 925 e780 239 275 11 624 2570 1050 e760 e366 e670 1500 1890 1050 e630 234 274 12 468 1840 995 e750 e365 e610 1400 1760 1070 e450 241 458 13 370 e1500 949 e720 e351 e570 1410 2000 1290 e410 283 561 14 327 e1250 919 e705 e318 e560 1490 2220 1120 e900 507 479 15 291 e1050 894 e670 e369 e580 1430 2220 859 e3200 366 394 16 273 e890 865 e685 e369 e640 1480 2420 700 e1800 301 334 17 261 e950 1020 e600 e351 e590 1880 2140 627 1040 287 295 18 248 918 2300 e490 e347 e545 4210 1880 601 1030 252 277 19 242 889 1930 e470 473 e510 11900 1890 1450 1220 230 264 20 247 847 1790 e460 886 e490 6500 2220 1160 910 216 253 21 6480 789 1330 e460 750 e480 4680 2320 846 747 225 248 22 16300 737 1160 e485 943 e480 3800 1960 782 636 1160 241 23 4900 688 1120 e520 1910 e460 3450 1900 763 580 819 236 24 2890 646 1210 e489 1200 e450 3530 1710 616 533 510 229 25 2080 609 3770 e478 807 e440 2890 1580 534 498 390 229 26 1570 673 2020 e497 787 533 2720 1710 504 461 350 225 27 1310 746 1610 e443 817 669 2880 1500 464 427 345 217 28 1180 564 1380 e455 1180 589 3590 1360 421 403 653 209 29 1130 562 1280 e436 --- 738 3400 1480 398 383 635 244 30 1020 546 1590 e410 --- 1020 3090 1530 374 365 583 488 31 1220 --- e1180 e420 --- 1510 --- 1520 --- 346 483 --- TOTAL 46028 38907 59286 21033 16525 22985 85124 70520 27568 25780 11889 9370 MEAN 1485 1297 1912 678 590 741 2837 2275 919 832 384 312 MAX 16300 7090 11000 1130 1910 1510 11900 5240 1670 3240 1160 561 MIN 194 546 724 410 318 440 942 1360 374 326 216 209 CFSM 3.86 3.37 4.97 1.76 1.53 1.93 7.37 5.91 2.39 2.16 1.00 .81 IN. 4.45 3.76 5.73 2.03 1.60 2.22 8.22 6.81 2.66 2.49 1.15 .91

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1904 - 1997, BY WATER YEAR (WY)

MEAN 646 953 768 576 512 943 2623 2256 815 437 361 381 MAX 2369 2493 2656 1887 3170 5986 4564 4609 2189 2043 1685 1794 (WY) 1978 1908 1974 1986 1981 1936 1987 1940 1952 1973 1990 1954 MIN 114 211 152 144 124 146 871 614 300 158 129 102 (WY) 1948 1909 1956 1940 1940 1940 1995 1941 1964 1991 1936 1948

SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1904 - 1997

ANNUAL TOTAL 531012 435015 ANNUAL MEAN 1451 1192 940 HIGHEST ANNUAL MEAN 1463 1973 LOWEST ANNUAL MEAN 489 1965 HIGHEST DAILY MEAN 16300 Oct 22 16300 Oct 22 33900 Mar 19 1936 LOWEST DAILY MEAN 180 Sep 8 194 Oct 7 66 Aug 4 1959 ANNUAL SEVEN-DAY MINIMUM 198 Sep 2 209 Oct 2 74 Aug 3 1959 INSTANTANEOUS PEAK FLOW 23000 Oct 22 47200 Mar 27 1953 INSTANTANEOUS PEAK STAGE 11.54 Oct 22 a 19.03 Mar 7 1979 INSTANTANEOUS LOW FLOW b 191 Oct 7 40 Mar 16 1932 ANNUAL RUNOFF (CFSM) 3.77 3.10 2.44 ANNUAL RUNOFF (INCHES) 51.31 42.03 33.17 10 PERCENT EXCEEDS 3530 2460 2190 50 PERCENT EXCEEDS 868 750 459 90 PERCENT EXCEEDS 262 276 183 a Ice jam. b Also on October 8. e Estimated.


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