Water Data Report 1997
03231500 SCIOTO RIVER AT CHILLICOTHE, OHIO
LOCATION.--Lat 39020'29", long 82058'16", Ross County, Hydrologic Unit 05060002, on right bank at north end of
Chillicothe, 1,400 ft downstream from Bridge Street bridge, 7.4 mi upstream from Paint Creek, and 15.4 mi down-
stream from Deer Creek.
WATER-DISCHARGE RECORDS
DRAINAGE AREA.--3,849 mi2.
PERIOD OF RECORD.--December 1913 to September 1914 (gage heights and discharge measurements only). October 1920 to
current year. Monthly discharge only for some periods, published in WSP 1305. Gage-height records collected in
this vicinity since 1907 are contained in reports of the National Weather Service.
REVISED RECORDS.--WSP 803: 1929(M). WSP 1908: Drainage area.
GAGE.--Water-stage recorder. Datum of gage is 594.05 ft above sea level. Prior to Sept. 30, 1914, nonrecording gage
at site 1,300 ft upstream at different datum. Apr. 1, 1921, to Aug. 6, 1930, nonrecording gage, at site 1,400 ft
upstream at present datum. Aug. 7, 1930, to Sept. 30, 1969, water-stage recorder 900 ft upstream at same datum.
REMARKS.--Records good except for periods of estimated record, which are poor. Flow regulated by 6 reservoirs 36 mi
to 91 mi upstream from station. U.S. Army Corps of Engineers satellite telemeter at station.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Mar. 26, 1913, reached a stage of 39.8 ft; discharge, 260,000 ft3/s
(estimated by Franklin County Conservancy District).
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 2330 1120 9020 4870 4000 11800 3850 1350 10800 3020 1090 1240
2 2600 948 16900 4420 3410 20300 3120 1630 24000 5090 985 1160
3 1700 861 15600 3950 3060 21600 2620 1730 32500 3890 933 1100
4 1250 838 10700 3000 4220 19800 2350 e2800 39200 3350 1010 980
5 1080 842 8710 2790 15400 11200 2000 e6800 37400 2540 2330 899
6 807 865 6520 3680 21200 9520 2400 e5600 20000 2110 1520 864
7 1000 1130 4450 4360 19800 14400 2320 4470 15400 1800 1150 830
8 1060 1560 3580 4280 15100 e17000 1990 3080 15000 1590 1010 817
9 736 2160 3030 3540 8640 e15000 1840 3400 13000 1480 886 818
10 845 1640 2540 e2500 6070 15000 1750 3590 11800 1560 799 817
11 1090 1500 2310 e2000 e4700 16500 1660 2980 10600 1550 820 919
12 715 1430 4800 e1700 e4000 13200 1610 2520 7520 1470 977 1200
13 591 1370 6360 e1400 e3500 8780 1890 2330 5390 1450 1190 1020
14 555 1440 9340 e1300 e3200 7440 2260 2090 8780 1350 2560 870
15 539 1310 9840 e1100 e2900 13800 2250 2120 6460 1250 1720 791
16 622 1090 9270 e1400 e2600 13900 2080 2360 4110 1170 4000 759
17 716 1020 11200 e1700 e2300 9530 1880 1800 6420 997 5280 745
18 773 1400 18500 e1400 e2100 8140 1740 1590 11500 920 20500 749
19 1300 1630 20800 e1100 e1900 10100 1600 2000 14700 901 13000 718
20 1560 1250 18100 e1000 e2200 8530 1520 2590 9950 1200 8480 758
21 1090 1200 12500 e1300 4340 6430 1490 2280 5970 1030 9870 1030
22 962 1190 7140 1550 6180 4790 1420 2450 4060 888 7300 872
23 947 1250 5140 2660 6610 4260 1250 2590 3170 936 5310 758
24 1050 1160 6390 4910 5630 3930 1240 1890 2640 2270 3620 731
25 1110 1060 14000 7990 4520 3610 1210 1640 2190 2090 2780 688
26 1070 2980 13200 7770 3280 3400 1250 2760 1930 1440 2410 688
27 965 10500 10200 4960 3100 3410 1220 4530 1850 1640 2060 673
28 1290 11000 9130 10900 4560 3070 1690 6540 1780 6630 1830 634
29 1340 8190 6190 11200 --- 3030 2160 5130 1620 3670 1690 630
30 997 6240 5520 8270 --- 3460 1730 3980 1680 1920 1480 620
31 1120 --- 5320 6040 --- 3490 --- 3080 --- 1340 1320 ---
TOTAL 33810 70174 286300 119040 168520 308420 57390 93700 331420 62542 109910 25378
MEAN 1091 2339 9235 3840 6019 9949 1913 3023 11050 2017 3545 846
MAX 2600 11000 20800 11200 21200 21600 3850 6800 39200 6630 20500 1240
MIN 539 838 2310 1000 1900 3030 1210 1350 1620 888 799 620
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 1997, BY WATER YEAR (WY)
MEAN 968 2053 3568 5284 5820 7211 6025 4180 3259 2137 1452 986
MAX 8068 12130 14120 30110 13700 19450 14640 18590 11050 9507 8263 10180
(WY) 1927 1973 1991 1937 1951 1963 1957 1996 1997 1992 1980 1979
MIN 192 210 222 312 386 1041 1136 440 378 303 214 207
(WY) 1954 1935 1935 1931 1934 1931 1941 1934 1925 1930 1930 1953
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1921 - 1997
ANNUAL TOTAL 2357769 1666604
ANNUAL MEAN 6442 4566 3567
HIGHEST ANNUAL MEAN 6217 1973
LOWEST ANNUAL MEAN 883 1934
HIGHEST DAILY MEAN 36800 May 2 39200 Jun 4 127000 Jan 23 1959
LOWEST DAILY MEAN 539 Oct 15 539 Oct 15 166 Sep 27 1944
ANNUAL SEVEN-DAY MINIMUM 636 Aug 30 644 Oct 12 174 Sep 21 1944
INSTANTANEOUS PEAK FLOW 42100 Jun 4 144000 Jan 23 1959
INSTANTANEOUS PEAK STAGE 16.23 Jun 4 32.50 Jan 23 1959
INSTANTANEOUS LOW FLOW 539 Oct 15 166 Sep 27 1944
10 PERCENT EXCEEDS 18200 11600 9230
50 PERCENT EXCEEDS 3310 2300 1480
90 PERCENT EXCEEDS 815 871 370
e Estimated.
03231500 SCIOTO RIVER AT CHILLICOTHE, OHIO
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water years 1950-51, 1965-1981, November 1985 to current year.
PERIOD OF DAILY RECORD.--
SPECIFIC CONDUCTANCE: May 1965 to October 1981, November 1985 to current year.
pH: June 1971 to October 1981, November 1985 to current year.
WATER TEMPERATURES: October 1950 to September 1951, October 1953 to October 1981,
November 1985 to current year.
DISSOLVED OXYGEN: May 1965 to October 1981, November 1985 to current year.
INSTRUMENTATION.--Water-quality monitor. Electronic data logger replaced digital recorder since July 12, 1991. Set
for 1-hour interval.
REMARKS.--Interruptions in the water-quality record were due to malfunction of the instrument.
EXTREMES FOR PERIOD OF DAILY RECORD.--
SPECIFIC CONDUCTANCE: Maximum, 1,210 microsiemens Jan. 13, 1976; minimum, 150 microsiemens June 29, 1972.
pH: Maximum, 9.3 units Aug. 24-26, 1981, May 1, 1988, and Oct. 1, 2, 1995; minimum, 6.3 units Mar. 6, 1979.
WATER TEMPERATURES: Maximum, 32.5C July 17, Aug. 18, 1988; minimum 0.0C on many days
during winters.
DISSOLVED OXYGEN: Maximum, >20.0 mg/L on several days during 1978 thru 1995; minimum, 0.0 mg/L
April 27, Aug. 12, Sept. 22, 1966.
EXTREMES FOR CURRENT YEAR.--
SPECIFIC CONDUCTANCE: Maximum, 927 microsiemens Sept. 12; minimum, 230 microsiemens Aug. 18.
pH: Maximum recorded, 8.6 units May 22 and 23; minimum recorded, 7.2 units Aug. 8.
WATER TEMPERATURES: Maximum, 29.0C July 17 and 18; minimum, 0.0C on several days during winter.
DISSOLVED OXYGEN: Maximum, 18.1 mg/L July 21; minimum, 4.6 mg/L July 28.
SPECIFIC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN
OCTOBER NOVEMBER DECEMBER JANUARY
1 548 481 510 644 615 624 481 400 463 494 485 489
2 595 548 576 666 644 656 418 341 386 514 493 505
3 616 579 601 696 666 684 450 413 429 535 514 523
4 618 611 614 692 680 686 484 450 470 595 535 568
5 657 613 633 693 676 682 472 458 462 --- --- ---
6 701 657 683 696 679 691 475 459 464 --- --- ---
7 736 701 719 709 679 698 525 475 506 --- --- ---
8 788 736 752 702 685 692 535 524 529 603 570 592
9 813 744 786 717 645 677 564 535 550 584 575 581
10 744 721 732 645 581 602 607 564 583 581 573 576
11 738 709 719 605 586 599 633 607 619 595 569 578
12 789 731 762 623 605 616 643 519 605 624 595 614
13 786 722 752 619 607 614 519 467 495 656 623 637
14 722 712 715 636 606 618 568 509 541 692 656 675
15 738 716 726 669 636 654 568 502 542 704 688 695
16 765 738 754 670 656 664 502 408 438 699 687 696
17 777 765 773 665 655 659 408 361 391 703 686 696
18 774 719 745 710 655 685 389 366 377 725 701 712
19 719 684 699 741 705 722 384 362 374 745 725 737
20 720 702 715 705 652 666 383 352 367 782 745 762
21 711 599 646 665 628 640 367 345 351 --- --- ---
22 599 584 590 667 629 647 415 367 393 --- --- ---
23 619 598 609 692 667 683 461 415 436 --- --- ---
24 657 619 640 699 686 691 502 461 485 --- --- ---
25 673 657 666 713 699 705 494 396 426 --- --- ---
26 691 668 676 703 659 684 450 396 408 --- --- ---
27 700 684 696 659 439 492 464 446 460 --- --- ---
28 737 679 703 556 483 531 446 425 431 --- --- ---
29 761 713 733 573 556 564 474 433 454 --- --- ---
30 758 657 696 570 474 519 489 474 485 --- --- ---
31 674 624 660 --- --- --- 492 485 489 --- --- ---
MONTH 813 481 686 741 439 645 643 341 465 782 485 626
FEBRUARY MARCH APRIL MAY
1 --- --- --- 651 455 551 605 584 594 693 669 681
2 --- --- --- 455 369 406 623 592 607 691 669 677
3 --- --- --- 455 408 435 655 615 634 730 691 714
4 --- --- --- 455 408 425 690 655 671 701 557 637
5 412 381 392 510 447 482 694 683 689 562 529 541
6 401 360 372 510 494 504 768 694 728 621 562 598
7 386 355 377 510 445 471 744 679 713 642 621 634
8 355 343 347 447 434 441 680 664 671 652 639 647
9 418 354 377 438 408 421 680 657 668 670 649 658
10 484 418 455 409 394 403 697 661 678 671 625 645
11 502 484 493 417 397 407 718 688 702 634 604 620
12 525 502 513 460 414 433 724 703 714 650 630 638
13 533 510 521 509 460 486 720 698 709 660 643 651
14 557 525 543 527 509 521 711 695 702 664 652 658
15 580 557 565 511 440 469 695 650 672 666 659 662
16 612 549 579 451 431 440 700 688 694 679 653 668
17 659 604 625 508 451 476 710 692 697 663 646 653
18 698 651 672 531 508 523 708 694 701 670 658 663
19 722 698 712 521 476 490 713 703 709 736 670 701
20 737 706 721 533 482 509 724 707 714 736 669 706
21 745 698 725 570 533 550 729 717 723 673 660 667
22 698 612 652 585 570 579 721 714 719 674 649 661
23 612 573 590 595 581 585 726 713 720 670 651 661
24 635 588 612 592 578 585 718 698 707 673 654 662
25 612 580 594 638 590 616 720 699 710 685 669 677
26 612 573 589 621 598 608 739 717 725 688 639 674
27 674 612 649 636 600 616 759 739 749 639 560 613
28 698 651 674 655 630 641 775 747 757 591 540 564
29 --- --- --- 653 642 649 779 730 749 598 591 596
30 --- --- --- 655 635 645 732 693 712 619 591 601
31 --- --- --- 635 600 614 --- --- --- 624 592 616
MONTH 745 343 556 655 369 516 779 584 698 736 529 647
JUNE JULY AUGUST SEPTEMBER
1 604 346 494 774 504 660 647 558 589 833 753 782
2 372 341 353 642 537 586 661 610 637 813 767 787
3 375 288 340 --- --- --- 711 653 676 818 787 801
4 288 258 266 --- --- --- 729 632 691 809 762 793
5 347 267 306 --- --- --- 763 698 723 832 786 798
6 393 347 375 --- --- --- 731 618 663 834 780 789
7 430 392 410 --- --- --- 641 593 606 814 778 798
8 410 396 401 742 728 738 674 614 643 826 780 791
9 419 408 414 772 723 748 739 664 699 846 779 822
10 428 415 420 767 747 755 772 729 753 878 828 851
11 430 410 420 773 749 761 767 751 761 880 835 854
12 468 429 451 769 725 740 799 740 759 927 804 840
13 503 468 483 773 733 754 793 755 774 885 804 827
14 540 404 482 777 755 767 758 643 687 912 814 841
15 472 409 447 779 761 773 643 541 589 821 780 807
16 541 472 505 792 771 781 544 369 448 789 754 767
17 635 392 546 788 742 766 510 400 479 788 766 779
18 415 351 383 761 722 745 400 230 285 849 788 802
19 415 274 328 742 715 730 430 328 367 851 803 819
20 494 335 425 761 742 752 476 397 444 851 782 822
21 540 493 517 779 755 770 461 387 428 816 799 806
22 639 540 599 770 675 727 507 457 479 872 799 826
23 663 628 643 695 673 682 536 505 517 863 801 831
24 694 663 679 789 660 740 583 520 555 830 781 801
25 730 693 710 660 525 567 638 574 603 792 763 776
26 739 726 730 563 512 531 669 625 644 786 771 778
27 762 739 747 626 556 590 723 665 683 820 777 806
28 771 747 755 600 294 395 743 684 704 830 789 814
29 778 758 773 360 292 326 725 701 710 839 789 814
30 781 767 774 496 354 425 771 707 723 844 797 829
31 --- --- --- 577 496 527 768 732 747 --- --- ---
MONTH 781 258 506 792 292 667 799 230 615 927 753 808
YEAR 927 230 619
03098600 MAHONING RIVER BELOW WEST AVENUE AT YOUNGSTOWN, OHIO
PH, WATER, WHOLE, FIELD, STANDARD UNITS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN
OCTOBER NOVEMBER DECEMBER JANUARY
1 7.8 7.8 7.8 8.0 7.9 7.9 7.7 7.6 7.7 7.9 7.9 7.9
2 7.8 7.8 7.8 8.0 7.9 7.9 7.7 7.6 7.7 7.9 7.9 7.9
3 7.9 7.8 7.8 8.0 7.9 8.0 7.8 7.7 7.8 7.9 7.9 7.9
4 8.0 7.8 7.9 8.1 8.0 8.0 7.9 7.8 7.9 7.9 7.9 7.9
5 8.0 7.9 8.0 8.1 8.0 8.0 7.9 7.9 7.9 7.9 7.9 7.9
6 8.0 7.9 8.0 8.0 7.9 8.0 7.9 7.9 7.9 7.9 7.9 7.9
7 8.1 7.9 8.0 7.9 7.9 7.9 7.9 7.9 7.9 8.0 7.9 8.0
8 8.1 7.9 8.0 7.9 7.8 7.8 7.9 7.9 7.9 8.0 8.0 8.0
9 8.0 7.9 7.9 7.9 7.8 7.8 8.0 7.9 8.0 8.0 8.0 8.0
10 8.0 7.8 7.9 7.9 7.8 7.8 8.0 8.0 8.0 8.0 8.0 8.0
11 8.0 7.9 8.0 7.9 7.8 7.9 8.0 7.9 8.0 8.0 8.0 8.0
12 8.0 7.9 8.0 8.1 7.9 8.0 8.0 7.9 7.9 8.0 8.0 8.0
13 8.1 8.0 8.0 8.1 7.9 8.0 7.9 7.8 7.9 8.0 7.9 8.0
14 8.1 8.0 8.1 8.1 8.0 8.0 8.0 7.9 7.9 8.0 7.9 8.0
15 8.2 8.0 8.1 8.1 8.0 8.1 8.0 7.9 8.0 8.0 8.0 8.0
16 8.1 8.0 8.1 8.2 8.0 8.1 7.9 7.8 7.8 8.0 8.0 8.0
17 8.1 8.0 8.0 8.2 8.1 8.2 7.8 7.8 7.8 8.1 8.0 8.0
18 8.0 7.8 7.9 8.1 8.0 8.1 7.8 7.7 7.7 8.0 8.0 8.0
19 7.9 7.8 7.8 8.1 8.0 8.0 7.8 7.8 7.8 8.0 7.9 8.0
20 7.9 7.7 7.8 8.2 8.0 8.1 7.9 7.8 7.8 8.0 8.0 8.0
21 7.8 7.7 7.7 8.2 8.0 8.1 7.9 7.8 7.8 --- --- ---
22 7.8 7.8 7.8 8.2 8.1 8.2 7.9 7.9 7.9 --- --- ---
23 7.8 7.8 7.8 8.3 8.1 8.2 7.9 7.9 7.9 --- --- ---
24 7.9 7.8 7.9 8.3 8.1 8.2 7.9 7.9 7.9 --- --- ---
25 7.9 7.9 7.9 8.1 8.0 8.0 7.9 7.8 7.9 --- --- ---
26 7.9 7.8 7.9 8.0 7.8 7.9 7.9 7.9 7.9 --- --- ---
27 7.8 7.8 7.8 7.8 7.7 7.7 8.0 7.9 8.0 --- --- ---
28 7.9 7.7 7.8 8.0 7.8 7.9 7.9 7.9 7.9 --- --- ---
29 7.9 7.8 7.9 8.0 8.0 8.0 7.9 7.9 7.9 --- --- ---
30 8.0 7.9 7.9 8.0 7.7 7.9 7.9 7.9 7.9 --- --- ---
31 8.0 7.9 7.9 --- --- --- 7.9 7.9 7.9 --- --- ---
MONTH 8.2 7.7 7.9 8.3 7.7 8.0 8.0 7.6 7.9 8.1 7.9 8.0
FEBRUARY MARCH APRIL MAY
1 --- --- --- 8.0 7.8 8.0 8.0 7.9 7.9 8.1 7.8 7.9
2 --- --- --- 7.9 7.7 7.8 8.0 7.9 7.9 7.9 7.8 7.8
3 --- --- --- 7.8 7.7 7.7 8.0 7.9 7.9 7.8 7.6 7.7
4 --- --- --- 7.8 7.7 7.7 8.0 7.9 8.0 7.6 7.3 7.4
5 7.8 7.8 7.8 7.8 7.7 7.8 8.0 7.9 7.9 7.3 7.3 7.3
6 7.9 7.8 7.8 7.9 7.8 7.8 8.0 7.9 8.0 7.9 7.3 7.6
7 7.9 7.9 7.9 7.9 7.8 7.9 8.2 7.9 8.0 8.0 7.9 7.9
8 7.9 7.9 7.9 7.9 7.9 7.9 8.2 8.0 8.1 8.0 7.9 7.9
9 7.9 7.9 7.9 7.9 7.9 7.9 8.3 8.0 8.1 7.9 7.8 7.9
10 7.9 7.8 7.9 7.9 7.8 7.8 8.3 8.1 8.2 7.9 7.8 7.9
11 7.9 7.8 7.9 7.9 7.8 7.8 8.4 8.1 8.2 8.0 7.8 7.9
12 7.9 7.9 7.9 7.9 7.8 7.9 8.4 8.1 8.2 8.0 7.9 7.9
13 8.0 7.9 7.9 7.9 7.8 7.9 8.3 8.0 8.1 8.1 7.9 8.0
14 8.0 7.9 7.9 7.9 7.9 7.9 8.2 8.0 8.1 8.1 7.9 8.0
15 8.0 7.9 7.9 7.9 7.8 7.8 8.4 7.9 8.1 8.1 7.9 8.0
16 8.0 7.9 7.9 7.9 7.8 7.9 8.4 8.1 8.3 8.0 7.9 7.9
17 8.0 7.9 8.0 7.9 7.9 7.9 8.4 8.0 8.3 --- --- ---
18 8.0 7.9 8.0 7.9 7.9 7.9 8.6 8.1 8.3 --- --- ---
19 8.0 7.9 8.0 7.9 7.8 7.9 8.6 8.3 8.4 --- --- ---
20 8.0 7.9 8.0 7.9 7.8 7.8 8.6 8.3 8.5 --- --- ---
21 8.1 8.0 8.0 7.9 7.8 7.9 8.6 8.3 8.5 8.3 8.1 8.2
22 8.0 8.0 8.0 7.9 7.8 7.8 8.6 8.3 8.5 8.6 8.1 8.3
23 8.1 8.0 8.0 7.8 7.8 7.8 8.6 8.4 8.5 8.6 8.2 8.4
24 8.1 8.0 8.1 7.9 7.8 7.9 8.5 8.3 8.4 8.5 8.2 8.4
25 8.1 8.0 8.0 7.9 7.9 7.9 8.5 8.3 8.4 8.4 8.1 8.2
26 8.0 8.0 8.0 7.9 7.9 7.9 8.6 8.3 8.4 8.1 7.9 8.0
27 8.0 8.0 8.0 7.9 7.9 7.9 8.5 8.1 8.3 8.0 7.8 7.9
28 8.1 8.0 8.0 7.9 7.9 7.9 8.1 7.9 8.0 8.1 7.9 8.0
29 --- --- --- 7.9 7.8 7.9 8.1 7.8 7.9 8.1 8.0 8.1
30 --- --- --- 7.9 7.8 7.9 8.1 7.7 7.9 8.2 8.0 8.1
31 --- --- --- 7.9 7.8 7.9 --- --- --- 8.1 8.0 8.1
MONTH 8.1 7.8 7.9 8.0 7.7 7.9 8.6 7.7 8.2 8.6 7.3 8.0
JUNE JULY AUGUST SEPTEMBER
1 8.1 7.8 7.9 8.0 7.6 7.7 --- --- --- 8.3 8.1 8.2
2 7.8 7.7 7.8 7.7 7.5 7.5 --- --- --- 8.3 8.0 8.1
3 7.8 7.7 7.7 --- --- --- --- --- --- 8.2 7.9 8.0
4 7.8 7.7 7.8 --- --- --- --- --- --- 8.0 7.7 7.8
5 7.8 7.7 7.8 --- --- --- --- --- --- 7.7 7.5 7.6
6 7.8 7.7 7.8 --- --- --- 7.9 7.6 7.8 7.6 7.5 7.5
7 7.9 7.8 7.9 --- --- --- 7.6 7.3 7.4 7.7 7.6 7.6
8 7.9 7.8 7.8 --- --- --- 7.7 7.2 7.4 7.8 7.6 7.7
9 8.0 7.9 7.9 8.1 7.9 8.0 7.8 7.5 7.7 8.2 7.8 8.0
10 8.1 8.0 8.1 8.1 7.8 8.0 7.7 7.4 7.6 8.1 8.0 8.1
11 8.1 8.0 8.0 8.2 7.9 8.0 7.6 7.4 7.5 8.1 8.0 8.0
12 8.1 8.0 8.0 8.3 7.9 8.1 --- --- --- 8.1 7.9 8.0
13 8.0 7.9 8.0 8.3 8.0 8.1 --- --- --- 8.0 7.9 8.0
14 8.0 7.8 7.9 8.5 8.1 8.2 --- --- --- 8.0 7.9 8.0
15 7.9 7.8 7.9 8.4 8.1 8.3 --- --- --- 8.1 8.0 8.0
16 7.9 7.8 7.9 8.4 8.0 8.2 --- --- --- 8.1 7.9 8.0
17 7.9 7.7 7.8 8.3 8.0 8.2 --- --- --- 8.1 7.8 8.0
18 7.8 7.7 7.7 --- --- --- --- --- --- 7.9 7.7 7.8
19 7.8 7.7 7.7 --- --- --- --- --- --- 8.1 7.9 8.0
20 7.9 7.7 7.8 --- --- --- --- --- --- 8.0 7.8 7.9
21 7.9 7.8 7.8 --- --- --- --- --- --- 7.9 7.8 7.8
22 7.9 7.8 7.8 --- --- --- --- --- --- 8.1 7.8 8.0
23 8.0 7.8 7.9 8.3 8.1 8.2 --- --- --- 8.1 8.0 8.0
24 8.1 7.8 7.9 8.2 7.5 7.8 --- --- --- 8.1 8.0 8.0
25 8.3 7.8 8.0 7.5 7.3 7.4 --- --- --- 8.1 8.0 8.0
26 8.2 7.9 8.1 7.6 7.4 7.5 --- --- --- 8.1 8.0 8.1
27 8.3 7.9 8.1 7.8 7.5 7.6 --- --- --- 8.1 8.0 8.1
28 8.3 7.8 8.0 7.7 7.5 7.6 8.1 7.9 8.0 8.1 8.0 8.1
29 8.3 7.9 8.1 7.7 7.6 7.6 8.2 8.0 8.1 8.1 8.0 8.0
30 8.1 7.8 8.0 --- --- --- 8.2 8.0 8.1 8.1 8.0 8.0
31 --- --- --- 8.1 7.5 7.8 8.3 8.0 8.2 --- --- ---
MONTH 8.3 7.7 7.9 8.5 7.3 7.9 8.3 7.2 7.8 8.3 7.5 7.9
YEAR 8.6 7.2 7.9
03231500 SCIOTO RIVER AT CHILLICOTHE, OHIO
WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN
OCTOBER NOVEMBER DECEMBER JANUARY
1 18.5 17.0 17.5 13.5 11.5 12.5 9.5 7.0 8.5 6.0 6.0 6.0
2 20.0 18.5 19.0 11.5 10.0 10.5 8.0 6.5 7.0 7.5 6.0 6.5
3 19.5 18.0 18.5 10.0 9.0 9.5 6.5 5.5 6.0 8.5 7.5 8.0
4 18.0 16.0 17.0 9.5 8.0 9.0 6.0 5.0 5.5 10.5 8.5 9.0
5 16.5 15.0 16.0 10.0 9.5 9.5 5.5 5.0 5.0 10.5 10.0 10.5
6 16.5 15.0 16.0 11.0 10.0 10.5 5.0 5.0 5.0 10.0 7.0 8.5
7 17.0 15.5 16.0 13.0 11.0 12.0 6.0 5.0 5.5 7.0 5.0 6.0
8 17.0 15.5 16.5 13.0 12.5 12.5 5.5 4.5 5.0 5.0 4.0 4.5
9 17.0 15.5 16.5 12.5 10.0 11.5 4.5 4.0 4.5 4.0 3.5 3.5
10 15.5 14.5 14.5 10.0 8.5 9.0 6.0 4.0 4.5 3.5 2.0 3.0
11 15.0 14.0 14.5 8.5 7.0 7.5 8.0 6.0 7.0 2.0 .5 1.0
12 15.0 13.5 14.0 7.0 6.0 6.5 9.0 7.5 8.0 .5 .0 .0
13 15.5 14.0 15.0 6.0 5.5 6.0 8.0 6.5 7.5 .0 .0 .0
14 17.0 15.0 16.0 6.0 5.5 6.0 6.5 5.5 6.0 .5 .0 .5
15 17.0 15.5 16.5 6.0 5.0 5.5 6.0 5.0 5.5 1.0 .5 .5
16 17.5 16.0 16.5 6.0 5.0 5.5 6.5 6.0 6.5 1.0 .5 1.0
17 18.0 16.0 17.0 7.0 5.5 6.0 6.5 6.5 6.5 .5 .0 .0
18 17.5 15.5 17.0 7.5 7.0 7.5 6.5 5.0 6.0 .5 .0 .5
19 15.5 13.5 14.5 8.0 7.0 7.5 5.0 3.0 4.0 .5 .5 .5
20 13.5 13.0 13.5 7.5 7.0 7.5 3.0 2.0 2.5 1.0 .5 .5
21 14.5 13.5 14.0 7.5 6.0 6.5 2.0 1.0 1.5 --- --- ---
22 15.0 14.5 14.5 6.0 5.5 6.0 2.5 1.5 2.0 --- --- ---
23 15.0 14.0 14.5 6.5 5.5 6.0 4.0 2.5 3.0 --- --- ---
24 14.5 13.5 14.0 7.0 6.5 6.5 4.5 4.0 4.5 --- --- ---
25 14.0 13.0 13.5 7.5 7.0 7.5 4.5 2.5 3.5 --- --- ---
26 14.0 13.5 13.5 8.0 7.0 7.0 2.5 1.5 2.0 --- --- ---
27 15.5 14.0 15.0 8.0 5.0 6.0 3.0 1.5 2.5 --- --- ---
28 16.5 15.5 16.0 5.0 4.0 4.5 5.5 3.0 4.0 --- --- ---
29 16.0 15.0 15.5 4.5 3.5 4.0 6.5 5.5 6.0 --- --- ---
30 16.0 15.0 16.0 7.0 4.5 5.5 6.5 6.0 6.0 --- --- ---
31 15.0 13.5 14.0 --- --- --- 6.5 6.0 6.0 --- --- ---
MONTH 20.0 13.0 15.5 13.5 3.5 7.5 9.5 1.0 5.0 10.5 0.0 3.5
FEBRUARY MARCH APRIL MAY
1 --- --- --- 9.5 8.0 9.0 11.0 9.0 10.0 17.5 15.0 16.5
2 --- --- --- 11.0 9.5 10.5 12.0 9.5 10.5 15.5 14.0 15.0
3 --- --- --- 10.0 8.0 9.0 13.0 10.5 11.5 16.0 15.0 15.5
4 --- --- --- 8.0 7.5 7.5 14.5 12.0 13.5 15.0 14.5 14.5
5 4.5 4.0 4.5 9.0 8.0 8.5 15.0 14.0 14.5 15.0 13.5 14.0
6 4.0 2.5 3.0 8.0 7.5 8.0 16.5 14.5 15.5 16.0 14.0 15.0
7 2.5 2.0 2.5 7.5 6.5 7.0 16.0 14.0 14.5 16.5 14.0 15.5
8 2.5 2.5 2.5 7.5 6.5 7.0 14.5 12.5 13.5 16.0 15.0 15.5
9 3.0 2.5 2.5 7.5 6.5 7.0 13.0 10.5 11.5 15.0 14.0 15.0
10 3.5 3.0 3.0 7.5 6.5 7.0 12.0 10.0 11.0 14.0 13.0 13.5
11 3.5 3.0 3.5 7.5 7.0 7.0 13.5 11.0 12.0 15.0 12.5 13.5
12 3.5 3.5 3.5 7.5 6.5 7.0 13.5 12.5 13.0 15.0 14.0 14.5
13 3.5 3.0 3.0 7.5 7.0 7.0 13.5 11.5 12.5 16.0 14.5 15.0
14 3.5 3.0 3.0 7.5 7.0 7.5 13.0 10.5 11.5 16.5 15.0 15.5
15 4.5 3.5 3.5 7.5 6.0 6.5 13.5 11.0 12.0 16.0 14.5 15.0
16 3.5 3.0 3.5 6.0 5.0 5.5 13.0 12.0 12.5 15.5 13.5 14.5
17 3.5 2.5 3.0 6.0 5.5 5.5 13.0 11.0 11.5 17.0 14.5 15.5
18 5.5 3.5 4.5 6.5 6.0 6.5 12.5 10.0 11.0 19.5 16.5 18.0
19 7.0 5.5 6.0 7.5 6.0 7.0 13.5 11.5 12.5 21.5 19.0 20.0
20 7.5 6.0 6.5 8.0 7.0 7.5 14.5 12.0 13.5 21.0 19.5 20.0
21 8.0 7.0 7.5 9.5 7.5 8.5 14.5 13.5 14.0 20.5 18.5 19.5
22 8.0 6.5 7.5 9.5 9.0 9.5 15.0 13.5 14.0 20.0 17.5 19.0
23 6.5 5.5 6.0 9.0 8.0 8.5 14.5 13.5 14.0 19.5 17.5 18.5
24 5.5 4.5 5.5 9.0 7.5 8.0 14.5 13.5 14.0 20.5 17.5 19.0
25 5.5 4.0 4.5 10.0 8.5 9.0 15.0 13.0 14.0 20.0 19.5 20.0
26 5.5 4.0 4.5 10.5 9.5 10.0 16.0 13.5 14.5 19.5 18.5 19.0
27 8.5 5.5 7.5 11.5 9.0 10.5 16.0 14.5 15.0 19.5 17.5 18.5
28 9.5 7.5 8.5 12.5 10.5 11.5 15.5 14.5 15.0 19.0 18.0 18.5
29 --- --- --- 12.5 12.0 12.5 17.0 14.0 15.5 18.5 18.0 18.0
30 --- --- --- 12.0 11.5 12.0 18.0 15.0 16.5 19.0 17.5 18.0
31 --- --- --- 11.5 10.0 10.5 --- --- --- 18.5 18.0 18.5
MONTH 9.5 2.0 4.5 12.5 5.0 8.5 18.0 9.0 13.0 21.5 12.5 16.5
JUNE JULY AUGUST SEPTEMBER
1 18.0 17.5 17.5 25.0 24.0 24.5 26.0 23.5 24.5 24.0 22.0 23.0
2 18.0 17.5 17.5 25.5 24.0 24.5 25.0 24.0 24.5 25.0 23.0 24.0
3 18.0 17.5 18.0 --- --- --- 26.5 23.5 25.0 24.5 22.5 23.5
4 18.0 17.0 17.5 --- --- --- 26.5 24.5 25.5 22.5 20.5 21.5
5 19.0 17.5 18.0 --- --- --- 26.0 24.5 25.5 22.0 20.0 21.0
6 18.5 18.0 18.5 --- --- --- 25.0 22.5 24.0 21.5 20.5 21.0
7 18.5 17.5 18.0 --- --- --- 24.5 22.0 23.0 22.5 20.0 21.0
8 17.5 17.0 17.5 --- --- --- 24.5 22.0 23.5 23.0 21.5 22.0
9 18.5 17.0 17.5 25.0 23.5 24.5 24.5 23.0 24.0 22.5 21.5 22.0
10 19.5 18.0 18.5 24.0 22.0 23.0 25.0 23.5 24.0 22.0 21.5 21.5
11 19.5 19.0 19.0 24.5 22.0 23.5 25.0 24.0 24.5 22.0 21.0 21.5
12 20.0 19.0 19.5 25.5 23.0 24.0 26.0 24.5 25.0 22.0 20.5 21.0
13 20.5 19.5 20.0 26.5 24.0 25.0 25.5 25.0 25.0 22.0 20.0 21.0
14 21.0 20.0 20.5 27.5 25.0 26.0 26.0 24.0 24.5 22.0 20.5 21.0
15 21.0 19.5 20.5 28.0 26.0 27.0 25.5 24.0 25.0 23.0 21.5 22.0
16 21.0 20.0 20.5 28.5 26.0 27.0 25.5 24.0 25.0 23.0 21.5 22.0
17 21.0 20.0 20.5 29.0 26.5 27.5 25.5 23.5 24.5 22.5 22.0 22.0
18 21.0 20.0 20.5 29.0 27.0 28.0 23.5 22.5 23.0 23.0 20.5 21.5
19 21.5 20.0 20.5 28.5 27.0 27.5 23.0 22.5 23.0 22.5 20.5 21.5
20 23.0 21.0 21.5 28.0 25.5 27.0 23.0 22.0 22.5 22.5 21.5 22.0
21 24.0 22.0 23.0 28.0 25.5 27.0 22.0 21.5 21.5 21.5 20.0 20.5
22 24.5 23.0 23.5 27.0 26.0 26.5 21.5 21.0 21.0 20.5 19.0 20.0
23 25.5 23.0 24.0 26.5 25.5 26.0 21.5 20.0 20.5 20.0 18.5 19.0
24 26.0 23.5 25.0 26.0 25.0 25.5 21.0 20.0 20.5 19.0 17.5 18.0
25 27.0 24.5 26.0 26.5 24.5 25.5 21.5 20.0 20.5 19.0 17.0 18.0
26 26.5 25.5 25.5 27.0 25.0 26.0 22.5 20.5 21.5 19.0 17.5 18.5
27 26.0 24.0 25.0 28.5 25.5 27.0 23.0 21.5 22.5 19.5 17.5 18.5
28 26.0 24.0 25.0 27.5 25.0 25.5 24.0 22.5 23.0 19.5 18.0 18.5
29 25.5 24.0 25.0 26.5 25.0 25.5 23.5 22.5 23.0 19.5 18.0 18.5
30 25.0 24.0 24.5 26.0 24.0 25.0 23.0 21.5 22.0 19.0 18.0 18.5
31 --- --- --- 25.5 23.5 24.5 23.0 21.0 22.0 --- --- ---
MONTH 27.0 17.0 21.0 29.0 22.0 25.5 26.5 20.0 23.5 25.0 17.0 21.0
YEAR 29.0 0.0 14.0
03098600 MAHONING RIVER BELOW WEST AVENUE AT YOUNGSTOWN, OHIO 03098600 MAHONING RIVER BELOW WEST AVENUE AT YOUNGSTOWN, OHIO
OXYGEN DISSOLVED (MG/L), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN
OCTOBER NOVEMBER DECEMBER JANUARY
1 7.5 7.2 7.3 8.9 8.1 8.6 --- --- --- 11.1 11.0 11.1
2 7.4 7.0 7.2 9.8 8.5 9.2 10.5 9.7 10.0 11.0 10.8 10.9
3 7.8 7.0 7.3 10.4 9.4 9.9 11.4 10.5 11.1 10.8 10.3 10.5
4 8.5 7.5 7.9 11.1 10.0 10.6 11.5 11.4 11.5 10.3 9.6 10.0
5 9.0 8.0 8.5 10.9 10.1 10.5 11.6 11.5 11.5 9.6 9.4 9.5
6 9.2 8.1 8.6 10.3 9.5 9.9 11.5 11.3 11.4 10.0 9.5 9.8
7 9.6 8.3 8.8 9.6 9.0 9.3 11.3 11.0 11.1 11.0 10.0 10.5
8 9.4 8.1 8.8 9.2 8.2 8.6 11.1 11.0 11.0 11.4 11.0 11.3
9 8.8 7.8 8.1 9.1 8.2 8.7 11.3 11.1 11.2 11.5 11.4 11.4
10 9.2 7.7 8.5 9.5 8.7 9.1 11.3 11.0 11.2 11.4 11.3 11.4
11 9.7 8.3 9.0 10.5 9.0 9.7 11.0 10.5 10.7 11.8 11.4 11.6
12 9.8 8.7 9.3 11.6 10.3 11.0 10.9 10.2 10.5 12.0 10.9 11.8
13 10.6 9.2 9.9 11.6 10.9 11.3 11.2 10.7 10.8 12.1 11.9 12.0
14 10.7 9.0 9.9 11.7 10.9 11.4 11.7 11.2 11.5 12.3 12.0 12.1
15 10.9 9.2 9.9 12.2 11.0 11.7 11.8 11.4 11.6 12.1 11.6 12.0
16 10.4 9.1 9.7 12.9 11.3 12.2 11.4 11.2 11.3 11.7 11.4 11.5
17 9.9 8.9 9.5 12.9 11.6 12.1 11.2 10.8 11.0 12.0 11.7 11.9
18 9.6 7.3 8.2 11.7 10.8 11.1 10.9 10.6 10.7 12.7 12.0 12.2
19 8.6 7.2 7.8 11.1 10.2 10.8 11.6 10.9 11.3 12.3 12.2 12.2
20 8.0 7.6 7.8 12.1 10.3 11.2 12.1 11.6 11.9 12.2 11.7 12.0
21 8.6 7.4 8.0 12.2 10.8 11.6 12.6 12.1 12.3 --- --- ---
22 8.6 7.7 8.1 12.3 11.2 11.9 12.5 12.2 12.3 --- --- ---
23 8.1 7.5 7.9 13.1 11.3 12.3 12.2 11.8 12.0 --- --- ---
24 8.5 7.5 8.0 13.0 11.2 11.8 11.8 11.5 11.6 --- --- ---
25 8.5 7.7 8.2 11.3 10.3 10.7 12.1 11.1 11.6 --- --- ---
26 8.3 7.7 7.9 10.6 8.6 10.0 12.7 12.1 12.5 --- --- ---
27 8.0 7.3 7.6 --- --- --- 12.7 12.3 12.5 --- --- ---
28 8.3 6.9 7.7 --- --- --- 12.3 11.7 12.1 --- --- ---
29 8.3 7.6 8.0 --- --- --- 11.7 11.0 11.3 --- --- ---
30 8.9 7.7 8.4 --- --- --- 11.0 10.9 11.0 --- --- ---
31 8.9 7.9 8.5 --- --- --- 11.1 11.0 11.0 --- --- ---
MONTH 10.9 6.9 8.4 13.1 8.1 10.6 12.7 9.7 11.4 12.7 9.4 11.3
FEBRUARY MARCH APRIL MAY
1 --- --- --- 10.8 10.3 10.6 10.4 9.9 10.1 10.4 7.5 8.8
2 --- --- --- 10.4 9.5 9.8 10.6 10.1 10.3 10.2 7.4 8.9
3 --- --- --- 10.1 9.5 9.8 10.4 9.8 10.1 9.0 6.9 7.9
4 --- --- --- 10.5 10.0 10.3 10.4 9.5 9.9 7.6 6.2 6.5
5 11.2 10.7 10.8 10.4 10.0 10.2 9.8 9.0 9.4 6.8 6.4 6.6
6 12.1 11.2 11.7 10.6 10.1 10.4 9.9 8.6 9.3 8.7 6.8 7.6
7 12.2 12.1 12.2 11.3 10.5 11.0 11.6 8.7 10.0 9.6 8.5 9.0
8 12.2 12.0 12.1 11.4 11.2 11.3 12.1 9.5 10.8 9.0 8.3 8.6
9 12.0 11.8 11.9 11.3 11.2 11.2 13.2 10.0 11.5 8.7 8.0 8.4
10 11.8 11.7 11.8 11.2 10.9 11.2 14.0 10.7 12.4 9.0 8.2 8.5
11 11.8 11.5 11.6 11.0 10.9 11.0 14.8 10.9 12.8 10.1 8.6 9.3
12 11.5 11.4 11.5 11.1 11.0 11.0 13.8 10.2 11.8 10.0 8.6 9.2
13 11.5 11.4 11.5 11.0 10.9 11.0 12.1 9.8 11.0 10.3 8.5 9.4
14 11.6 11.5 11.5 10.9 10.6 10.7 12.9 9.8 11.3 10.5 8.4 9.4
15 11.5 11.3 11.4 11.0 10.5 10.6 15.0 9.9 12.3 10.4 8.4 9.4
16 11.5 11.3 11.4 11.5 11.0 11.4 14.6 10.8 12.7 11.0 8.4 9.5
17 11.7 11.4 11.6 11.5 11.3 11.4 13.9 10.4 12.3 11.3 8.3 9.6
18 11.5 11.1 11.4 11.3 11.0 11.1 16.3 10.7 13.3 11.6 8.6 10.0
19 11.1 10.7 10.9 11.1 10.9 11.1 17.0 11.7 14.4 11.2 8.0 9.6
20 10.7 10.6 10.7 10.9 10.7 10.7 17.8 11.8 14.8 10.4 7.6 8.8
21 10.7 10.6 10.7 10.7 10.2 10.5 16.2 11.5 14.1 11.1 7.7 9.1
22 10.9 10.6 10.7 10.2 9.9 10.0 16.8 11.2 14.1 10.1 7.6 8.8
23 11.3 10.9 11.1 10.3 9.9 10.1 16.2 11.8 14.2 9.9 7.6 8.6
24 11.7 11.3 11.5 10.5 10.2 10.4 14.8 10.9 13.1 10.1 7.7 8.9
25 11.8 11.5 11.7 10.4 10.0 10.2 15.6 10.7 13.3 9.1 7.3 7.9
26 11.5 11.0 11.3 10.0 9.9 9.9 17.4 11.0 14.0 7.3 6.4 6.9
27 11.1 10.5 10.8 10.0 9.7 9.9 15.2 10.4 11.9 6.8 6.2 6.5
28 10.6 10.4 10.4 9.7 9.3 9.6 11.7 8.1 10.0 7.4 6.4 7.0
29 --- --- --- 9.3 9.1 9.2 11.4 7.7 9.5 7.3 7.1 7.2
30 --- --- --- 9.3 9.1 9.2 11.9 7.6 9.6 8.3 7.0 7.6
31 --- --- --- 9.9 9.1 9.5 --- --- --- 7.9 7.4 7.6
MONTH 12.2 10.4 11.3 11.5 9.1 10.5 17.8 7.6 11.8 11.6 6.2 8.4
JUNE JULY AUGUST SEPTEMBER
1 7.7 7.0 7.3 8.8 6.1 6.7 11.8 7.5 9.2 12.5 8.0 10.0
2 7.1 6.9 7.0 6.4 5.4 5.7 10.4 7.9 9.0 13.2 8.2 10.4
3 7.1 6.9 7.0 --- --- --- 11.9 7.2 9.1 12.3 8.0 10.1
4 7.4 7.1 7.3 --- --- --- 12.0 7.2 9.3 13.2 8.2 10.2
5 7.4 7.3 7.4 --- --- --- 10.2 6.3 7.5 12.6 8.2 10.1
6 7.8 7.3 7.5 --- --- --- 8.2 5.7 6.8 11.1 8.4 9.6
7 8.1 7.8 8.0 --- --- --- 10.8 6.7 8.3 11.2 7.9 9.3
8 8.3 8.1 8.2 --- --- --- 14.4 8.2 10.6 10.7 7.8 9.1
9 8.3 7.6 8.1 9.6 7.3 8.4 15.5 9.5 12.2 9.4 7.8 8.5
10 7.9 7.8 7.9 10.4 7.3 8.7 13.3 8.7 11.0 9.1 6.8 7.9
11 7.8 7.7 7.8 11.6 7.6 9.4 12.4 8.2 10.0 9.0 7.0 8.0
12 7.7 7.4 7.6 12.5 7.9 10.0 11.6 7.1 9.3 8.8 7.0 7.8
13 7.4 7.4 7.4 12.8 8.0 10.3 9.7 6.6 7.8 8.8 7.1 7.9
14 7.4 6.2 6.9 15.6 8.2 11.4 6.9 5.9 6.2 8.9 7.4 8.1
15 7.0 6.3 6.8 15.1 8.3 11.3 6.8 5.7 6.1 9.2 7.6 8.4
16 7.2 6.9 7.0 15.4 7.7 11.0 6.5 5.9 6.0 9.7 7.5 8.4
17 7.2 5.9 6.8 17.5 7.9 12.1 6.2 5.6 5.9 9.4 7.8 8.5
18 6.7 5.8 6.2 17.5 9.1 13.0 6.2 5.5 5.9 10.1 7.3 8.4
19 6.7 6.0 6.3 17.9 9.4 13.3 6.3 5.9 6.1 9.8 7.7 8.6
20 6.6 6.1 6.4 17.8 8.4 12.6 6.7 6.0 6.3 8.4 7.0 7.5
21 6.8 6.6 6.7 18.1 8.9 13.0 6.7 6.5 6.7 8.9 7.0 7.8
22 7.4 6.5 6.8 15.7 8.9 12.4 6.9 6.5 6.8 9.0 7.4 8.1
23 8.8 6.9 7.6 15.2 9.2 12.1 7.1 6.9 7.0 8.6 7.7 8.1
24 10.3 6.8 8.2 12.0 6.4 8.4 7.4 7.1 7.2 8.9 7.8 8.3
25 13.6 7.3 9.8 7.4 5.5 6.3 7.7 7.1 7.4 9.3 8.2 8.7
26 13.1 8.1 10.3 10.3 5.9 7.7 8.3 7.2 7.6 9.9 8.5 9.0
27 13.8 7.8 10.3 11.3 6.0 8.5 8.6 7.1 7.7 10.2 8.6 9.3
28 13.4 7.6 10.1 6.0 4.6 5.0 9.3 7.1 8.0 10.4 8.6 9.4
29 13.0 7.9 10.2 5.7 5.2 5.4 9.7 7.3 8.4 10.0 8.6 9.2
30 10.3 7.0 8.7 7.5 5.6 6.3 10.1 7.4 8.7 9.8 8.6 9.1
31 --- --- --- 10.1 6.6 7.9 11.4 7.8 9.4 --- --- ---
MONTH 13.8 5.8 7.8 18.1 4.6 9.5 15.5 5.5 8.0 13.2 6.8 8.8
YEAR 18.1 4.6 9.7
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://pubsdata.usgs.gov/pubs/wdr/1997/oh-97-2/sw97/03231500.html
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Page Last Modified: Thursday, 08-Nov-2018 14:54:15 EST