PISCATAQUA RIVER BASIN
01073500 LAMPREY RIVER NEAR NEWMARKET, NH
LOCATION.--Lat 43°06'09", long 70°57'll", Rockingham County, Hydrologic Unit 01060003, on right bank, 200 ft upstream
from Packers Falls, 2 mi northwest of Newmarket, and 4.6 mi upstream from mouth.
DRAINAGE AREA.--183 mi².
PERIOD OF RECORD.--Discharge records: July 1934 to current year.
Water-quality records: Water year 1954.
REVISED RECORDS.--WSP 1231: 1936-37.
GAGE.--Water-stage recorder. Datum of gage is 38.28 ft above sea level (revised).
REMARKS.--Records good except those for estimated daily discharges, which are fair. Some regulation by Pawtuckaway and
Mendums Ponds. These reservoirs have a usable capacity of about 600 million ft³.
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 7,080 ft³/s October 22, gage height, 14.59 ft; minimum daily discharge,
10 ft³/s, August 9-20.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY MEAN VALUE
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 33 433 428 e550 e240 521 1090 677 120 24 14 e16
2 33 393 703 e525 e220 500 1020 576 110 21 13 e15
3 31 358 1030 523 e210 487 914 494 101 22 12 e12
4 27 327 1170 475 e210 454 862 527 92 27 12 e11
5 e23 342 984 464 e260 412 891 516 83 25 11 e11
6 e22 344 762 500 351 515 912 463 76 22 11 e13
7 e24 317 648 492 368 586 897 388 78 21 11 e15
8 e27 345 756 e550 335 e525 807 366 68 20 11 e17
9 e70 380 889 e500 280 e420 700 336 63 23 10 e18
10 95 439 837 e500 e230 e370 594 329 59 55 10 e18
11 93 464 763 e490 e210 e340 504 329 55 81 10 e20
12 84 433 683 e400 e180 e300 449 312 50 87 10 e41
13 74 373 663 e370 e170 e280 524 288 54 73 10 e65
14 65 325 680 e340 e160 e260 530 275 59 58 10 e65
15 56 e300 713 e310 238 382 502 259 52 57 e10 e60
16 e54 e280 720 331 237 465 452 269 48 55 e10 e51
17 e52 e270 837 434 215 352 394 271 44 51 e10 e45
18 e51 259 1120 e355 204 e300 725 253 45 51 e10 e41
19 e52 266 1370 e300 247 e280 2100 247 59 48 e10 e37
20 519 301 1510 e280 363 e270 2820 359 63 42 e10 e35
21 3560 310 1350 263 417 e290 2560 404 60 38 e12 e34
22 6310 289 1120 249 633 e300 1680 385 54 37 e38 e31
23 6150 271 901 279 768 e300 1160 326 46 36 44 e27
24 3320 256 760 254 819 e270 901 271 41 32 33 e25
25 e1800 247 810 322 647 e250 727 249 37 29 26 e24
26 e1300 350 819 415 505 471 619 245 35 26 e21 e22
27 e930 537 803 365 461 640 547 223 34 22 e18 e22
28 e715 572 704 357 501 699 595 198 31 21 e16 e21
29 630 532 626 353 --- 716 775 177 26 19 e17 e21
30 545 441 629 304 --- 898 769 156 23 17 e17 22
31 489 --- 596 279 --- 1040 --- 134 --- 15 e18 ---
TOTAL 27234 10754 26384 12129 9679 13893 28020 10302 1766 1155 475 855
MEAN 879 358 851 391 346 448 934 332 58.9 37.3 15.3 28.5
MAX 6310 572 1510 550 819 1040 2820 677 120 87 44 65
MIN 22 247 428 249 160 250 394 134 23 15 10 11
CFSM 4.80 1.96 4.65 2.14 1.89 2.45 5.10 1.82 .32 .20 .08 .16
IN. 5.54 2.19 5.36 2.47 1.97 2.82 5.70 2.09 .36 .23 .10 .17
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1934 - 1997, BY WATER YEAR (WY)
MEAN 131 267 339 288 304 604 702 354 178 95.0 73.7 72.4
MAX 879 742 851 796 811 1866 1756 1400 717 599 621 650
(WY) 1997 1952 1997 1956 1970 1936 1987 1954 1982 1938 1938 1954
MIN 11.1 15.9 45.9 46.4 49.7 210 170 105 29.8 12.2 7.56 3.44
(WY) 1948 1942 1942 1944 1980 1989 1985 1985 1964 1993 1965 1957
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1934 - 1997
ANNUAL TOTAL 166193.5 142553
ANNUAL MEAN 454 391 284
HIGHEST ANNUAL MEAN 441 1984
LOWEST ANNUAL MEAN 137 1965
HIGHEST DAILY MEAN 6310 Oct 22 6310 Oct 22 7360 Apr 7 1987
LOWEST DAILY MEAN 9.2 Aug 31 a 10 Aug 9 b .66 Jul 27 1994
ANNUAL SEVEN-DAY MINIMUM 12 Sep 7 10 Aug 9 2.0 Sep 10 1995
INSTANTANEOUS PEAK FLOW 7080 Oct 22 7570 Apr 7 1987
INSTANTANEOUS PEAK STAGE 14.59 Oct 22 15.14 Apr 7 1987
ANNUAL RUNOFF (CFSM) 2.48 2.13 1.55
ANNUAL RUNOFF (INCHES) 33.78 28.98 21.05
10 PERCENT EXCEEDS 951 814 656
50 PERCENT EXCEEDS 301 275 170
90 PERCENT EXCEEDS 27 18 24
a Also occurred on August 10-20.
b During refilling after repairs at Wiswall Dam.
e Estimated.
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