water-data report 2013 04174500 huron river at ann arbor, mi · location.--lat 42°17′13″, long...

U.S. Department of the Interior U.S. Geological Survey

Suggested citation: U.S. Geological Survey, 2014, Water-resources data for the United States, Water Year 2013: U.S. Geological Survey Water-Data Report WDR-US-2013, site 04174500, accessed at

http://wdr.water.usgs.gov/wy2013/pdfs/04174500.2013.pdf

Water-Data Report 2013

04174500 HURON RIVER AT ANN ARBOR, MI St. Clair-Detroit Basin

Huron Subbasin

LOCATION.--Lat 42°17′13″, long 83°44′02″ referenced to North American Datum of 1927, in NW ¼ sec.28, T.2 S., R.6 E., Washtenaw County, MI, Hydrologic Unit 04090005, on left bank 100 ft upstream from bridge on Maiden Lane in Ann Arbor, 0.7 mi downstream from Argo Dam, and 4.2 mi upstream from Geddes Dam.

DRAINAGE AREA.--729 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD.--February 1904 to current year. Monthly discharge only for February 1904 to September 1914 and October 1947 to July 1948, published in WSP 1307. Published as "at Geddes" February 1904 to December 1914 and as "at Barton" January 1914 to September 1940.

REVISED RECORDS.--WSP 874: 1938. WSP 2112: Drainage area.

GAGE.--Water-stage recorder. Datum of gage is 744.81 ft above NGVD 29 (levels by Michigan Department of Natural Resources). February 1904 to December 1914 at Geddes Dam, 4.2 mi downstream, and January 1914 to September 1947 at Barton Dam, 2.6 mi upstream, flow computed from records of operation of powerplants and records of depth of flow over dam and/or flow through undersluices.

REMARKS.--Records good. Prior to 1955 diversion upstream from station for Ann Arbor municipal supply had negligible effect on natural flow; annual mean discharge and runoff figures adjusted for diversion from 1955 to 1991. Flow regulated by powerplants prior to May 1962. From June 1962 to 1975 occasional regulation for lake level control operations upstream from station. Since 1975 extensive regulation of flow exists due to automation of gates at dams upstream from station. Gage-height telemeter at station.

http://wdr.water.usgs.gov/

http://waterdata.usgs.gov/nwis/nwisman/?site_no=04174500


04174500 HURON RIVER AT ANN ARBOR, MI—Continued

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DISCHARGE, CUBIC FEET PER SECOND WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

DAILY MEAN VALUES

Day Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep

1 105 270 336 352 895 505 482 1,450 427 911 302 459 2 111 219 268 282 799 501 473 1,320 418 731 308 622 3 111 223 251 297 838 532 457 1,170 392 696 319 486 4 109 233 252 294 846 597 443 1,010 386 676 318 474 5 113 242 229 290 906 545 428 1,020 380 659 426 331

6 117 241 244 293 850 518 401 996 368 637 402 355 7 118 242 321 289 791 494 329 940 359 601 354 366 8 114 246 415 292 761 491 276 803 354 510 362 368 9 115 247 404 291 686 514 281 774 337 571 350 401

10 121 257 381 294 672 571 348 779 423 556 333 393

11 119 257 342 406 669 751 645 681 420 512 321 379 12 121 299 333 413 673 915 926 602 517 450 577 375 13 174 289 274 529 625 909 1,290 576 944 391 588 363 14 183 290 277 507 533 844 1,380 554 1,070 377 563 351 15 176 288 260 519 540 851 1,050 418 861 338 485 353

16 176 301 271 662 534 975 1,010 385 751 280 428 365 17 204 337 265 710 510 885 1,040 385 752 336 365 370 18 274 310 285 720 499 839 1,430 386 924 318 361 359 19 384 290 329 674 527 804 2,060 375 777 312 357 357 20 350 288 414 633 494 678 2,050 362 657 329 355 394

21 323 339 450 577 484 662 1,860 362 599 325 344 378 22 315 374 413 497 475 649 1,680 365 583 319 331 360 23 355 358 391 491 466 621 1,650 340 562 329 322 333 24 331 334 384 442 444 582 1,870 305 532 338 280 325 25 314 344 380 197 352 571 1,880 271 512 299 273 235

26 316 418 384 215 422 543 1,810 217 398 263 262 276 27 312 427 375 206 465 454 1,600 262 830 325 306 276 28 304 416 364 352 504 464 1,690 318 970 358 325 257 29 301 386 378 550 --- 476 1,600 363 910 380 312 194 30 292 346 365 991 --- 481 1,510 427 869 316 339 202 31 286 --- 358 1,010 --- 487 --- 420 --- 277 348 ---

Total 6,744 9,111 10,393 14,275 17,260 19,709 33,949 18,636 18,282 13,720 11,316 10,757 Mean 218 304 335 460 616 636 1,132 601 609 443 365 359 Max 384 427 450 1,010 906 975 2,060 1,450 1,070 911 588 622 Min 105 219 229 197 352 454 276 217 337 263 262 194

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1915 - 2013, BY WATER YEAR (WY)

Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep

Mean 276 398 447 481 567 876 848 631 424 248 198 224 Max 904 1,018 1,406 1,324 1,431 2,308 2,647 2,085 1,341 1,130 692 919 (WY) (1982) (1993) (2012) (2007) (1976) (1918) (1947) (1943) (1943) (1968) (2011) (1975) Min 71.6 109 123 131 145 189 274 187 72.0 31.5 21.1 55.8 (WY) (1935) (1935) (1935) (1925) (1934) (1934) (1931) (1925) (1934) (1934) (1934) (1934)



— 3 —

SUMMARY STATISTICS

Calendar Year 2012 Water Year 2013 Water Years 1915 - 2013 Annual total 166,316 184,152 Annual mean 454 505 a467 Highest annual mean 824 1974 Lowest annual mean 171 1931 Highest daily mean 1,830 Mar 16 2,060 Apr 19 5,840 Mar 14, 1918 Lowest daily mean 57 Jul 27 105 Oct 1 b4.0 Aug 2, 1931 c Annual seven-day minimum 73 Jul 16 112 Oct 1 13 Jul 28, 1934 Maximum peak flow 2,450 Jun 27 Maximum peak stage 15.18 Jun 27 d17.50Jun 26, 1968 10 percent exceeds 1,050 909 959 50 percent exceeds 322 385 347 90 percent exceeds 108 255 122 a Does not include water year 1948. b Plant leakage, but doubtful due to possible change in leakage. c Also occurred Sept. 11, 1931. d Present site and datum.

O N D 2012

J F M A M J J A S 2013

100

200

500

1,000

2,000

5,000

10,000

MEA

N D

ISCH

ARGE

, CUB

IC F

EET

PER

SECO

ND



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WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water years 1970-73, 2000-03, 2010 to 2013 (discontinued).

PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: April 2000 to September 2003 (not operated during winter months), March 2011 to September 2013. pH: April 2000 to September 2003 (not operated during winter months), March 2011 to September 2013. WATER TEMPERATURE: April 2000 to September 2003 (not operated during winter months), March 2011 to September 2013. DISSOLVED OXYGEN: April 2000 to September 2003 (not operated during winter months), March 2011 to September 2013. TURBIDITY: March 2011 to September 2013.

INSTRUMENTATION.--Water-quality monitor telemeter, set for 15-minute interval.

REMARKS.-- REMARKS: Interruptions in the water-quality record were due to instrument malfunction. Specific conductance records rated excellent except for the

following periods: Oct. 1-18, Oct. 30 to Nov. 15, Nov. 25 to Dec. 6, Dec. 18, 19, Jan. 1-17, 21-29, Feb. 1-8, Mar. 3-20, 23-30, Apr. 27-30, May 14-23, 25-30, June 20-23, July 6-15, July 25 to Aug. 13, Sept. 12-17 rated good; Feb. 9-14, Mar. 31 to Apr. 4, May 1, 2, May 31 to June 3, June 24, 25, July 16, 17, Aug. 14-21 rated fair; Feb. 15-21, Apr. 5-20, May 3-9, June 4-15, June 26 to July 1 rated poor. pH records rated excellent. Water temperature records rated excellent. Dissolved oxygen records rated excellent. Turbidity records rated excellent except for the following periods: Oct. 1-8, 20, 22, Nov. 16, 19, 22, Dec. 11, 12, 19, 29, 30, Jan. 18, 21, Jan. 31 to Feb. 4, 16, 17, 19, 21, 22, Mar. 31, Apr. 27, May 26, June 21, July 8, 12-17, 20, 22, 24, Aug. 25, Sept. 11, 20, 21, 25 rated good; Oct. 9-18, Nov. 17, Dec. 28, Jan. 1, Feb. 5, 6, 13, 18, 20, 23-25, Mar. 10, Apr. 3, 28, May 17-19, 27-29, June 23, 24, July 9, 23, Aug. 26, Sept. 4, 10, 12, 23, 24 Rated fair; Oct. 23 to Nov. 15, 20, 21, Nov. 23 to Dec. 6, 13-18, 31, Jan. 2-17, 20, 23-29, Feb. 7-12, 14, 15, 26-28, Mar. 2-9, 11-20, 28-30, Apr. 1, 2, 4-26, Apr. 29 to May 10, 20-23, 31, June 2-4, 6-18, June 27 to July 1, July 30 to Aug. 1, 5-8, 10, 12-20, Sept. 1-3, 5-9, 13, 14, 16, 17 rated poor.

EXTREMES FOR PERIOD OF RECORD.-- SPECIFIC CONDUCTANCE: Maximum recorded during period of operation, 967 microsiemens, Feb. 27, 2013; minimum recorded, 223 microsiemens,

Aug. 15, 2003. pH: Maximum recorded during period of operation, 9.1 std. units, Sept. 3, 2002; minimum recorded, 7.5 std. units, July 29, 30, 31, 2001, and July 12,

2003. WATER TEMPERATURE: Maximum recorded during period of operation, 31.9°C, July 7, 2012; minimum recorded, -0.1°C on many days during the

2012, 2013 winter periods. DISSOLVED OXYGEN: Maximum recorded during period of operation, 14.7 mg/L, Feb. 12, 13, 2012; minimum recorded, 3.8 mg/L, Aug. 23, 2002. TURBIDITY: Maximum recorded, 800 FNU, Apr. 28, 2013; minimum recorded, 0.0 FNU on several days in water year 2012, and Nov. 15, 2013.

EXTREMES FOR CURRENT YEAR.-- SPECIFIC CONDUCTANCE: Maximum recorded, 967 microsiemens, Feb. 27; minimum recorded, 427 microsiemens, June 27. pH: Maximum recorded, 8.6 std. units, Sept. 18, 19, 20; minimum recorded, 7.7 std. units, July 17, 22 , 23, 25. WATER TEMPERATURE: Maximum recorded, 30.2°C, July 20; minimum recorded, -0.1°C on many days during winter. DISSOLVED OXYGEN: Maximum recorded, 14.0 mg/L, Jan. 2, 5, Mar. 22; minimum recorded, 6.3 mg/L, July 19, 20, 21, 22. TURBIDITY: Maximum recorded, 800 FNU, Apr. 28; minimum recorded, 0.0 FNU, Nov. 15.



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SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 754 749 751 776 772 774 750 746 749 803 794 796 2 753 741 749 778 774 776 754 749 752 807 797 802 3 753 748 750 781 775 777 761 754 757 805 799 801 4 757 752 755 780 776 778 759 717 753 814 801 806 5 760 753 757 782 776 779 773 755 765 826 813 819

6 758 755 757 789 782 785 786 773 782 824 820 822 7 761 755 758 791 788 789 796 781 787 825 822 823 8 766 760 762 791 787 790 807 796 801 879 824 830 9 768 763 766 793 787 789 802 799 801 826 819 822

10 769 763 767 788 785 787 804 778 787 827 821 824

11 773 768 770 787 782 784 778 769 774 865 787 816 12 775 768 772 785 758 776 772 770 771 822 815 818 13 777 625 762 786 779 783 776 771 773 817 778 809 14 767 691 755 788 784 786 784 776 781 869 816 825 15 780 767 774 789 778 785 790 784 785 890 825 833

16 779 776 778 788 780 784 794 783 790 862 838 852 17 779 742 775 784 781 783 800 793 796 863 835 847 18 777 750 772 782 780 781 810 799 802 835 812 823 19 775 747 762 781 775 778 818 807 814 812 782 797 20 752 732 743 775 768 772 819 758 804 824 763 797

21 732 714 723 768 764 766 797 783 792 813 803 808 22 714 689 702 766 763 765 783 763 769 825 813 822 23 697 670 689 765 759 762 767 762 764 837 825 831 24 701 693 696 760 751 755 772 761 765 853 835 843 25 705 699 701 759 754 756 779 771 776 879 853 861

26 723 702 707 764 756 759 782 778 780 858 840 847 27 745 723 741 774 764 770 788 780 785 862 810 839 28 749 743 745 766 757 762 794 788 790 916 838 871 29 755 748 752 761 752 756 797 789 791 930 819 866 30 761 754 757 753 740 748 801 796 797 839 689 781 31 773 760 768 --- --- --- 811 794 798 689 638 649

Month 780 625 749 793 740 774 819 717 782 930 638 819



— 6 —



February March April May

1 661 636 646 834 817 826 847 834 838 704 684 694 2 681 661 673 845 831 841 847 839 843 702 682 689 3 695 654 677 843 829 837 851 841 846 726 702 716 4 675 646 652 833 817 825 852 842 848 750 724 738 5 690 667 681 937 787 807 856 848 852 764 740 750

6 713 682 700 793 785 788 863 854 859 768 757 764 7 722 703 712 795 786 793 874 857 864 763 708 734 8 729 709 718 798 788 794 907 863 874 724 704 714 9 739 712 724 796 792 794 943 870 881 724 683 700

10 757 728 738 795 789 792 910 808 886 708 684 697

11 760 740 751 791 751 783 918 697 890 695 679 684 12 773 746 764 784 726 748 901 850 875 682 675 678 13 796 725 774 728 701 711 859 745 784 680 676 677 14 813 771 782 721 702 713 778 744 754 706 677 680 15 802 780 789 742 719 729 837 775 821 684 678 681

16 820 790 804 761 732 749 820 770 791 690 680 684 17 819 793 801 754 745 751 783 753 778 696 689 692 18 827 800 809 764 752 759 781 697 751 708 695 704 19 834 796 814 772 762 766 770 672 719 713 706 711 20 837 796 811 776 764 770 --- --- --- 723 711 715

21 821 783 802 796 773 782 --- --- --- 728 717 722 22 807 799 803 796 788 792 --- --- --- 742 727 734 23 802 797 799 797 792 795 --- --- --- 748 742 745 24 801 793 797 802 797 799 --- --- --- 742 737 739 25 947 791 802 808 800 804 --- --- --- 756 739 745

26 877 794 801 814 807 810 --- --- --- 769 753 760 27 967 796 825 816 807 812 718 694 705 778 759 772 28 848 817 823 818 811 814 728 711 722 805 770 789 29 --- --- --- 833 818 828 732 724 729 818 805 813 30 --- --- --- 838 831 835 725 704 715 818 756 811 31 --- --- --- 840 832 837 --- --- --- 808 697 800

Month 967 636 760 937 701 790 --- --- --- 818 675 727



— 7 —



June July August September

1 808 795 805 688 654 676 714 700 705 734 731 733 2 818 808 815 696 680 690 710 699 705 747 732 741 3 827 810 818 698 692 696 718 709 713 742 735 740 4 841 823 834 707 696 701 721 713 716 737 722 728 5 848 836 842 698 676 688 731 719 723 727 721 723

6 857 841 850 677 652 664 731 720 725 726 722 724 7 864 851 860 653 640 645 726 712 717 730 722 725 8 896 864 883 642 609 635 730 708 716 739 692 728 9 907 887 898 633 551 620 730 716 723 744 618 733

10 900 726 873 623 608 620 734 721 726 745 730 739

11 914 897 906 622 616 619 734 723 727 745 737 741 12 911 890 900 621 615 618 735 511 694 745 737 742 13 890 626 806 631 618 624 741 672 724 744 734 739 14 748 657 707 668 628 653 737 682 699 741 733 737 15 659 618 633 703 666 687 699 685 688 745 730 738

16 --- 608 --- 723 694 713 700 685 693 749 731 739 17 --- --- --- 739 716 727 718 695 702 751 733 744 18 --- --- --- 740 729 735 735 711 719 756 750 753 19 729 713 718 743 733 741 751 709 726 758 755 756 20 741 718 727 735 704 729 751 723 731 757 660 753

21 765 741 757 726 718 722 748 718 724 755 746 753 22 773 765 770 719 716 718 731 727 729 755 750 752 23 778 773 776 723 621 715 731 729 731 751 744 748 24 774 764 768 722 716 720 731 729 730 748 744 746 25 765 744 759 720 715 718 731 717 729 749 743 746

26 765 741 757 716 703 709 730 706 727 749 745 747 27 792 427 758 709 666 706 729 701 726 752 747 749 28 793 713 749 710 705 708 732 706 725 756 747 750 29 723 695 708 711 696 703 737 729 731 756 749 753 30 702 673 683 717 699 712 731 633 727 760 754 757 31 --- --- --- 719 707 714 734 728 732 --- --- ---

Month --- --- --- 743 551 688 751 511 719 760 618 742



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pH, WATER, UNFILTERED, FIELD, STANDARD UNITS WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Median Max Min Median Max Min Median Max Min Median


1 8.4 8.2 8.3 8.4 8.3 8.3 8.2 8.1 8.2 8.3 8.2 8.3 2 8.4 8.2 8.2 8.4 8.3 8.3 8.2 8.1 8.1 8.3 8.2 8.3 3 8.3 8.2 8.2 8.4 8.3 8.3 8.2 8.0 8.1 8.3 8.2 8.3 4 8.3 8.1 8.2 8.4 8.3 8.3 8.2 8.0 8.1 8.3 8.2 8.3 5 8.3 8.1 8.2 8.4 8.3 8.3 8.2 8.0 8.1 8.3 8.2 8.3

6 8.3 8.2 8.2 8.4 8.2 8.3 8.4 8.0 8.2 8.3 8.2 8.3 7 8.3 8.2 8.2 8.3 8.2 8.3 8.3 8.2 8.2 8.3 8.2 8.3 8 8.4 8.2 8.2 8.4 8.2 8.3 8.3 8.2 8.2 8.3 8.2 8.3 9 8.4 8.2 8.2 8.4 8.3 8.3 8.3 8.2 8.2 8.3 8.2 8.3

10 8.3 8.2 8.2 8.3 8.2 8.3 8.3 8.2 8.2 8.3 8.2 8.3

11 8.3 8.2 8.2 8.3 8.3 8.3 8.3 8.2 8.3 8.3 8.2 8.3 12 8.4 8.2 8.3 8.3 8.2 8.3 8.3 8.2 8.3 8.3 8.2 8.2 13 8.4 8.2 8.3 8.3 8.2 8.3 8.3 8.2 8.3 8.3 8.2 8.2 14 8.3 8.2 8.3 8.4 8.2 8.3 8.4 8.3 8.3 8.2 8.2 8.2 15 8.4 8.3 8.3 8.3 8.2 8.2 8.4 8.3 8.3 8.2 8.2 8.2

16 8.4 8.3 8.3 8.4 8.3 8.3 8.3 8.3 8.3 8.2 8.1 8.2 17 8.4 8.2 8.3 8.4 8.3 8.3 8.3 8.2 8.3 8.2 8.1 8.2 18 8.3 8.1 8.2 8.4 8.3 8.3 8.3 8.2 8.3 8.2 8.2 8.2 19 8.2 8.1 8.2 8.4 8.2 8.3 8.3 8.2 8.2 8.3 8.2 8.2 20 8.2 8.1 8.1 8.3 8.2 8.2 8.3 8.2 8.2 8.3 8.2 8.2

21 8.1 8.1 8.1 8.3 8.2 8.2 8.3 8.2 8.3 8.3 8.2 8.2 22 8.1 8.0 8.1 8.3 8.2 8.2 8.3 8.2 8.3 8.3 8.2 8.2 23 8.1 8.0 8.1 8.2 8.2 8.2 8.3 8.3 8.3 8.2 8.2 8.2 24 8.2 8.0 8.1 8.3 8.2 8.2 8.3 8.3 8.3 8.2 8.2 8.2 25 8.1 8.0 8.1 8.3 8.2 8.2 8.3 8.3 8.3 8.2 8.1 8.2

26 8.1 8.0 8.1 8.3 8.2 8.2 8.3 8.3 8.3 8.2 8.1 8.2 27 8.2 8.1 8.1 8.3 8.2 8.2 8.3 8.3 8.3 8.2 8.1 8.2 28 8.2 8.1 8.1 8.2 8.1 8.2 8.3 8.2 8.3 8.2 8.1 8.1 29 8.2 8.1 8.2 8.2 8.1 8.2 8.3 8.2 8.3 8.1 8.0 8.1 30 8.3 8.2 8.3 8.2 8.1 8.2 8.3 8.2 8.3 8.2 8.0 8.1 31 8.4 8.2 8.3 --- --- --- 8.3 8.2 8.3 8.2 8.1 8.1

Max 8.4 8.3 8.3 8.4 8.3 8.3 8.4 8.3 8.3 8.3 8.2 8.3 Min 8.1 8.0 8.1 8.2 8.1 8.2 8.2 8.0 8.1 8.1 8.0 8.1



— 9 —




1 8.1 8.1 8.1 8.1 8.0 8.1 8.4 8.2 8.3 8.1 8.0 8.0 2 8.1 8.1 8.1 8.1 8.0 8.1 8.4 8.3 8.3 8.1 8.0 8.0 3 8.2 8.1 8.1 8.2 8.1 8.1 8.4 8.3 8.4 8.1 8.0 8.1 4 8.2 8.1 8.1 8.2 8.1 8.1 8.4 8.3 8.4 8.1 8.0 8.1 5 8.2 8.1 8.1 8.2 8.1 8.1 8.4 8.3 8.4 8.2 8.0 8.1

6 8.2 8.1 8.1 8.2 8.1 8.1 8.4 8.3 8.4 8.2 8.0 8.1 7 8.2 8.1 8.1 8.2 8.1 8.1 8.4 8.3 8.3 8.1 8.0 8.1 8 8.2 8.1 8.1 8.2 8.1 8.1 8.4 8.3 8.3 8.2 8.0 8.1 9 8.2 8.1 8.2 8.2 8.1 8.1 8.4 8.3 8.3 8.2 7.9 8.0

10 8.2 8.1 8.1 8.2 8.1 8.1 8.3 8.2 8.3 8.1 7.8 8.0

11 8.2 8.1 8.1 8.1 8.1 8.1 8.3 8.2 8.3 8.1 8.0 8.0 12 8.2 8.1 8.1 8.1 8.0 8.0 8.2 8.2 8.2 8.1 8.0 8.1 13 8.2 8.1 8.1 8.0 8.0 8.0 8.2 8.0 8.1 8.2 8.0 8.1 14 8.2 8.1 8.1 8.1 8.0 8.0 8.2 8.1 8.1 8.2 8.1 8.1 15 8.2 8.1 8.1 8.1 8.0 8.0 8.2 8.1 8.2 8.2 8.1 8.2

16 8.2 8.1 8.2 8.1 8.0 8.1 8.3 8.1 8.2 8.2 8.1 8.1 17 8.2 8.1 8.2 8.2 8.0 8.1 8.3 8.2 8.2 8.2 8.1 8.1 18 8.2 8.1 8.2 8.2 8.0 8.1 8.3 8.2 8.2 8.2 8.0 8.1 19 8.2 8.1 8.2 8.2 8.1 8.1 8.2 8.1 8.1 8.2 8.0 8.1 20 8.2 8.1 8.2 8.2 8.1 8.2 8.1 8.0 8.1 8.2 8.0 8.1

21 8.2 8.1 8.2 8.3 8.2 8.2 8.2 8.0 8.1 8.1 8.0 8.1 22 8.2 8.1 8.2 8.3 8.2 8.2 8.2 8.1 8.1 8.1 8.0 8.1 23 8.2 8.1 8.1 8.3 8.2 8.2 8.2 8.1 8.2 8.1 8.0 8.0 24 8.2 8.1 8.1 8.3 8.2 8.2 8.2 8.1 8.2 8.2 8.1 8.2 25 8.2 8.1 8.1 8.3 8.2 8.2 8.2 8.1 8.2 8.2 8.1 8.1

26 8.1 8.1 8.1 8.3 8.2 8.2 8.2 8.1 8.1 8.2 8.1 8.2 27 8.1 8.0 8.1 8.3 8.2 8.3 8.2 8.1 8.1 8.2 8.1 8.2 28 8.2 8.1 8.1 8.3 8.2 8.3 8.2 8.0 8.1 8.2 8.1 8.1 29 --- --- --- 8.4 8.2 8.3 8.1 8.0 8.1 8.1 8.1 8.1 30 --- --- --- 8.4 8.2 8.3 8.2 8.0 8.1 8.1 8.0 8.1 31 --- --- --- 8.3 8.2 8.3 --- --- --- 8.1 8.0 8.0

Max 8.2 8.1 8.2 8.4 8.2 8.3 8.4 8.3 8.4 8.2 8.1 8.2 Min 8.1 8.0 8.1 8.0 8.0 8.0 8.1 8.0 8.1 8.1 7.8 8.0



— 10 —




1 8.1 8.0 8.0 8.0 7.8 7.9 8.0 7.8 7.9 8.0 7.9 7.9 2 8.1 8.0 8.0 8.0 7.9 8.0 8.0 7.8 7.9 8.1 7.9 8.0 3 8.1 8.1 8.1 8.1 7.9 8.0 7.9 7.8 7.9 8.1 8.0 8.1 4 8.2 8.0 8.1 8.1 7.9 8.0 8.0 7.9 7.9 8.1 8.0 8.0 5 8.2 8.1 8.1 8.1 7.9 8.0 7.9 7.9 7.9 8.1 8.0 8.0

6 8.2 8.1 8.2 8.0 7.9 8.0 8.0 7.8 7.9 8.1 8.0 8.1 7 8.2 8.1 8.2 8.0 7.9 8.0 8.0 7.9 7.9 8.1 8.0 8.0 8 8.2 8.1 8.1 8.0 7.9 8.0 8.0 7.9 8.0 8.2 8.0 8.1 9 8.2 8.1 8.1 8.0 7.9 7.9 8.0 7.9 7.9 8.2 8.0 8.1

10 8.1 8.0 8.1 8.0 7.9 7.9 7.9 7.8 7.9 8.3 8.1 8.2

11 8.2 8.0 8.1 8.1 7.9 8.0 7.9 7.8 7.9 8.3 8.2 8.2 12 8.1 8.0 8.0 8.1 7.9 8.0 7.9 7.8 7.8 8.3 8.1 8.1 13 8.1 7.9 8.0 8.1 8.0 8.0 8.0 7.8 7.9 8.2 8.1 8.1 14 8.0 7.9 8.0 8.1 8.0 8.1 8.0 7.8 7.9 8.2 8.1 8.1 15 8.0 7.8 7.9 8.1 8.0 8.0 7.9 7.8 7.9 8.2 8.1 8.1

16 8.2 7.9 8.0 8.0 8.0 8.0 7.9 7.8 7.9 8.3 8.1 8.2 17 8.1 8.0 8.1 8.0 7.7 7.9 8.0 7.9 7.9 8.4 8.1 8.2 18 8.1 8.0 8.0 7.8 7.8 7.8 8.0 7.9 7.9 8.6 8.3 8.4 19 8.2 8.0 8.1 7.8 7.8 7.8 8.0 7.9 7.9 8.6 8.4 8.5 20 8.2 8.0 8.1 7.9 7.8 7.8 8.0 7.9 7.9 8.6 8.3 8.4

21 8.2 8.0 8.1 7.9 7.8 7.8 8.0 7.9 7.9 8.4 8.2 8.3 22 8.1 8.0 8.0 7.8 7.7 7.8 8.0 7.8 7.9 8.4 8.3 8.3 23 8.1 7.9 8.0 7.8 7.7 7.8 7.9 7.8 7.8 8.5 8.3 8.3 24 8.1 7.9 8.1 7.8 7.8 7.8 7.9 7.8 7.8 8.4 8.3 8.3 25 8.1 7.9 8.0 7.8 7.7 7.8 7.9 7.8 7.8 8.5 8.3 8.3

26 8.1 7.9 8.0 7.9 7.8 7.8 8.0 7.8 7.8 8.5 8.2 8.3 27 8.0 7.9 8.0 7.9 7.8 7.8 8.1 7.8 7.9 8.4 8.3 8.3 28 7.9 7.8 7.9 8.0 7.8 7.9 8.0 7.9 8.0 8.4 8.3 8.3 29 7.9 7.8 7.8 7.9 7.8 7.9 8.0 7.9 7.9 8.4 8.2 8.3 30 8.0 7.8 7.9 8.0 7.9 7.9 8.0 7.8 7.9 8.5 8.2 8.2 31 --- --- --- 8.0 7.9 7.9 8.0 7.9 7.9 --- --- ---

Max 8.2 8.1 8.2 8.1 8.0 8.1 8.1 7.9 8.0 8.6 8.4 8.5 Min 7.9 7.8 7.8 7.8 7.7 7.8 7.9 7.8 7.8 8.0 7.9 7.9

Max Min Median

Year Maximum

8.6 8.4 8.5

Year Minimum

7.8 7.7 7.8



— 11 —

TEMPERATURE, WATER, DEGREES CELSIUS WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013



1 17.4 14.8 15.8 8.0 6.9 7.3 4.8 3.7 4.1 1.1 0.4 0.6 2 17.1 15.5 16.2 7.1 6.3 6.8 5.4 4.8 5.1 0.5 0.1 0.4 3 17.0 16.1 16.4 7.5 5.9 6.4 6.3 5.2 5.6 0.6 0.3 0.5 4 18.4 15.7 16.7 6.9 5.9 6.4 6.9 6.0 6.4 1.0 0.3 0.6 5 16.6 15.4 16.1 7.5 5.9 6.3 6.3 5.3 5.7 0.8 0.2 0.5

6 15.4 13.9 14.6 7.0 5.8 6.2 5.9 5.1 5.5 0.6 0.5 0.6 7 14.1 13.0 13.7 6.8 5.6 6.0 5.9 5.5 5.7 1.2 0.4 0.7 8 15.1 12.3 13.3 6.9 5.4 5.9 5.6 4.6 5.0 1.1 0.3 0.6 9 14.9 12.1 13.1 7.4 5.6 6.2 4.8 4.5 4.6 1.7 0.8 1.1

10 12.8 11.4 12.3 7.3 6.5 6.8 4.7 4.3 4.5 1.5 0.8 1.2

11 13.4 10.7 11.8 8.1 6.7 7.4 4.3 3.5 3.9 2.0 1.3 1.6 12 13.4 10.7 11.7 8.1 7.3 7.8 3.8 3.0 3.4 2.5 1.5 2.0 13 11.8 10.7 11.1 7.4 7.1 7.3 3.6 2.9 3.2 2.9 2.5 2.7 14 12.7 11.4 12.1 7.6 6.6 7.0 3.5 2.7 3.0 3.1 2.5 2.7 15 12.3 11.1 11.8 7.1 6.4 6.7 3.1 2.7 2.9 2.6 2.0 2.3

16 12.8 10.6 11.5 6.8 5.6 6.1 3.8 3.1 3.5 2.0 1.3 1.5 17 13.7 11.6 12.5 6.2 5.4 5.8 3.7 3.5 3.6 1.7 1.0 1.3 18 13.4 12.3 12.7 6.3 5.4 5.8 4.0 3.3 3.6 1.6 1.0 1.2 19 12.6 12.1 12.4 6.2 5.3 5.7 4.1 3.7 3.9 1.8 0.9 1.3 20 12.8 12.2 12.4 6.4 5.8 6.2 4.5 4.0 4.3 1.4 0.5 1.0

21 12.9 11.8 12.3 7.0 6.1 6.6 4.3 2.9 3.7 0.9 0.3 0.7 22 12.6 11.6 12.2 7.4 6.3 6.9 2.9 2.5 2.7 0.4 -0.1 0.1 23 13.0 12.2 12.6 7.4 6.3 7.0 2.6 2.0 2.3 0.2 -0.1 0.0 24 14.6 12.8 13.5 6.3 5.5 5.8 2.2 1.8 2.0 0.4 -0.1 0.0 25 14.8 13.2 14.2 5.5 5.0 5.2 1.9 1.5 1.7 0.3 -0.1 -0.1

26 14.8 13.7 14.0 5.1 4.2 4.7 1.8 0.9 1.3 0.4 -0.1 0.0 27 14.0 13.0 13.5 4.2 3.4 3.7 1.6 0.9 1.2 0.6 -0.1 0.1 28 13.0 11.4 12.3 3.8 3.3 3.5 1.1 0.7 0.9 0.3 0.1 0.2 29 11.4 9.1 10.4 4.0 3.2 3.5 1.0 0.7 0.9 0.5 0.1 0.3 30 9.1 7.6 8.1 3.8 3.3 3.6 0.7 0.4 0.5 0.8 0.4 0.6 31 7.6 7.2 7.4 --- --- --- 0.8 0.3 0.5 1.7 0.8 1.2

Month 18.4 7.2 12.9 8.1 3.2 6.0 6.9 0.3 3.4 3.1 -0.1 0.9



— 12 —




1 1.0 0.0 0.5 1.2 0.8 1.0 7.5 6.2 6.8 14.8 12.9 13.8 2 0.1 -0.1 0.0 1.3 1.0 1.2 6.8 5.5 6.2 16.7 14.3 15.6 3 0.0 -0.1 -0.1 1.7 0.6 1.1 6.7 5.0 5.8 17.6 15.8 16.6 4 0.0 -0.1 -0.1 2.0 0.3 1.1 6.7 4.6 5.8 18.0 16.3 17.0 5 0.1 -0.1 0.0 2.1 0.8 1.5 7.8 5.4 6.6 18.2 16.5 17.1

6 0.4 -0.1 0.1 2.3 1.2 1.8 7.5 6.4 7.0 18.4 16.5 17.3 7 0.5 -0.1 0.2 2.5 1.8 2.2 9.0 7.2 7.9 19.2 16.8 17.9 8 0.5 0.0 0.2 3.6 1.8 2.7 8.3 7.6 7.9 19.8 17.7 18.7 9 0.7 0.0 0.3 3.5 2.2 2.9 8.6 7.9 8.2 20.1 18.0 19.0

10 0.6 0.1 0.3 4.3 3.0 3.6 8.4 7.8 8.1 20.0 18.7 19.3

11 0.5 0.3 0.4 4.3 3.6 3.9 7.8 7.0 7.4 19.0 17.1 18.3 12 1.0 0.5 0.8 4.3 3.4 4.1 7.0 6.0 6.5 17.1 14.9 16.1 13 1.6 0.6 1.0 3.4 1.7 2.8 6.2 5.1 5.5 15.5 13.9 14.7 14 1.5 0.8 1.1 3.0 1.4 2.1 6.0 5.1 5.4 15.4 13.3 14.4 15 1.7 1.0 1.3 3.0 1.8 2.4 7.3 5.2 6.3 17.9 14.6 16.2

16 1.2 0.7 0.9 2.8 2.1 2.5 9.6 7.0 8.4 19.4 16.7 18.0 17 1.1 0.3 0.7 3.2 1.8 2.4 10.4 8.6 9.3 20.2 17.8 18.9 18 1.1 0.2 0.7 2.7 2.0 2.3 11.0 9.2 10.1 20.6 18.2 19.5 19 0.9 0.1 0.6 2.3 1.4 1.8 10.9 9.0 10.2 21.6 19.0 20.4 20 0.7 0.0 0.4 1.6 0.8 1.2 9.0 7.2 7.9 22.6 20.1 21.4

21 0.7 0.3 0.5 1.4 0.5 0.9 7.9 6.9 7.5 23.1 21.4 22.4 22 0.4 -0.1 0.2 2.1 0.6 1.3 9.5 7.9 8.7 23.6 22.3 22.7 23 1.0 0.2 0.4 2.8 1.1 1.9 10.8 9.3 10.2 22.7 20.1 21.6 24 0.6 0.0 0.3 2.8 2.0 2.4 10.8 9.0 10.1 21.0 19.2 20.0 25 2.3 0.3 1.0 2.8 2.1 2.4 9.0 8.4 8.6 20.7 18.4 19.5

26 1.4 0.7 0.9 3.3 2.2 2.8 9.8 8.5 9.1 20.8 17.7 19.1 27 1.5 0.6 1.1 4.5 2.5 3.5 11.5 9.8 10.7 18.5 16.9 17.7 28 1.3 0.8 1.1 5.0 2.8 4.0 11.8 11.0 11.4 18.2 16.8 17.4 29 --- --- --- 5.8 4.1 5.1 12.0 10.9 11.4 19.2 17.7 18.5 30 --- --- --- 7.0 4.9 6.1 13.5 11.9 12.7 20.8 18.1 19.5 31 --- --- --- 7.8 6.0 6.8 --- --- --- 21.5 19.8 20.7

Month 2.3 -0.1 0.5 7.8 0.3 2.6 13.5 4.6 8.3 23.6 12.9 18.4



— 13 —




1 22.6 21.0 21.8 22.4 21.7 22.1 23.9 21.4 22.4 26.0 25.2 25.5 2 22.5 21.6 22.0 22.1 21.3 21.7 22.9 22.0 22.2 26.0 24.9 25.4 3 22.6 20.5 21.5 22.9 21.0 21.9 24.0 21.8 22.8 25.0 23.8 24.3 4 22.1 20.1 21.1 23.9 21.9 22.9 23.6 22.1 22.8 24.7 23.1 24.0 5 22.0 19.8 20.8 24.9 23.2 23.9 22.5 22.2 22.3 24.5 22.5 23.4

6 21.5 19.8 20.6 25.2 23.6 24.4 22.8 21.8 22.3 23.4 21.8 22.5 7 20.7 19.9 20.1 25.7 24.3 24.9 23.1 21.8 22.4 23.3 22.0 22.3 8 21.1 19.6 20.3 25.5 24.5 25.0 23.5 22.4 22.8 23.4 21.8 22.4 9 20.4 19.4 19.9 26.4 24.6 25.5 24.4 22.4 23.3 22.2 20.6 21.6

10 20.2 19.0 19.8 26.4 25.0 25.7 24.3 23.0 23.5 23.7 21.7 22.8

11 22.5 20.0 21.2 26.4 25.0 25.7 24.2 22.8 23.5 24.6 23.0 23.7 12 22.0 21.0 21.5 26.3 24.4 25.4 23.6 21.8 23.0 25.0 22.6 23.7 13 23.2 20.9 22.1 26.3 24.1 25.3 23.2 22.2 22.6 22.6 20.7 21.8 14 23.2 21.5 22.2 26.7 24.6 25.7 22.2 20.7 21.4 22.2 20.0 20.9 15 22.8 21.4 22.0 27.6 25.4 26.5 21.6 19.9 20.8 20.7 19.4 20.2

16 23.4 21.3 22.3 28.4 26.6 27.4 21.8 19.9 20.9 19.5 18.2 19.0 17 24.2 21.6 22.8 29.2 27.1 28.2 22.7 20.4 21.4 19.2 17.8 18.3 18 23.9 22.2 22.9 29.8 28.0 29.0 22.8 20.8 21.6 20.1 17.8 18.4 19 23.9 21.9 22.7 30.0 28.6 29.3 23.3 21.0 22.1 19.3 18.4 18.7 20 23.9 21.5 22.6 30.2 28.6 29.3 23.8 22.1 22.9 19.9 18.9 19.3

21 24.1 22.0 23.1 29.7 28.1 28.8 24.4 22.9 23.7 20.6 19.2 19.6 22 24.5 22.8 23.7 28.5 27.6 28.0 24.6 23.6 24.0 20.1 18.5 19.1 23 25.8 23.4 24.6 28.1 26.4 27.2 25.8 23.3 24.3 19.4 17.9 18.4 24 26.4 24.2 25.3 27.1 25.4 26.2 25.4 23.4 24.1 19.3 17.5 18.2 25 26.4 24.9 25.6 26.0 24.5 25.3 25.4 23.2 24.1 19.7 17.3 18.2

26 26.1 25.1 25.7 25.6 24.4 24.8 25.8 23.9 24.6 19.7 16.6 17.8 27 26.2 23.9 25.2 24.6 23.5 24.2 25.3 24.3 24.8 19.3 16.8 17.8 28 24.7 23.5 24.4 23.5 22.6 22.9 25.6 24.7 25.0 19.5 17.4 18.0 29 23.5 22.5 23.1 22.6 21.7 22.1 26.7 24.4 25.3 18.1 17.7 17.9 30 23.4 22.1 22.6 23.1 21.0 22.0 26.3 24.8 25.5 19.4 17.3 18.0 31 --- --- --- 22.7 21.9 22.1 26.6 25.5 25.9 --- --- ---

Month 26.4 19.0 22.4 30.2 21.0 25.3 26.7 19.9 23.2 26.0 16.6 20.7

Max Min Mean

Year 30.2 -0.1 12.1



— 14 —

DISSOLVED OXYGEN, WATER, UNFILTERED, MILLIGRAMS PER LITER WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013



1 10.8 8.9 9.5 12.1 11.2 11.5 13.3 12.5 12.8 13.7 13.4 13.6 2 10.7 8.6 9.4 12.4 11.2 11.7 12.8 12.1 12.3 14.0 13.5 13.7 3 10.2 8.6 9.1 12.6 11.4 11.9 12.8 11.7 12.1 13.7 13.5 13.6 4 10.4 8.4 9.2 12.8 11.6 12.0 12.3 11.5 11.8 13.8 13.5 13.7 5 10.1 8.4 8.9 12.8 11.7 12.0 13.0 11.5 12.0 14.0 13.6 13.7

6 10.2 8.6 9.2 12.5 11.7 12.0 13.2 11.7 12.0 13.7 13.4 13.6 7 10.4 9.0 9.5 12.8 11.8 12.1 12.0 11.4 11.6 13.9 13.5 13.7 8 10.7 9.2 9.8 13.0 12.0 12.3 12.3 11.6 11.9 13.9 13.5 13.7 9 10.8 9.2 9.8 13.4 11.9 12.3 12.3 11.8 12.0 13.7 13.5 13.6

10 10.6 9.3 9.8 12.7 11.8 12.1 12.2 11.7 11.9 13.9 13.6 13.7

11 11.1 9.6 10.1 12.7 11.6 12.0 12.8 11.9 12.2 13.6 13.3 13.4 12 11.3 9.8 10.4 12.0 11.4 11.6 13.1 12.3 12.5 13.5 13.1 13.3 13 10.7 9.9 10.2 12.2 11.3 11.7 13.2 12.5 12.7 13.1 12.6 12.8 14 10.4 9.7 10 13.0 11.4 11.8 13.4 12.7 13.0 13.1 12.6 12.7 15 10.7 9.6 10.0 12.7 11.5 11.9 13.4 12.8 13.0 13.4 12.9 13.2

16 11.1 9.8 10.2 13.4 11.9 12.2 13.1 12.4 12.7 13.4 12.9 13.1 17 10.8 9.6 10.1 13.1 12.1 12.5 13.0 12.5 12.6 13.6 13.2 13.4 18 10.3 9.4 9.8 13.3 12.4 12.7 13.2 12.4 12.7 13.7 13.4 13.5 19 10.1 9.6 9.8 13.4 12.3 12.7 12.9 12.3 12.5 13.6 13.3 13.5 20 10.0 9.4 9.6 13.2 12.0 12.5 12.5 11.9 12.2 13.8 13.1 13.6

21 10.1 9.4 9.7 13.2 12.1 12.4 12.6 12.0 12.3 13.6 13.3 13.5 22 10.2 9.5 9.7 12.7 11.8 12.2 13.1 12.6 12.8 13.7 13.5 13.6 23 10.1 9.4 9.6 12.2 11.5 11.8 13.3 12.9 13.1 13.8 13.6 13.7 24 10.6 9.3 9.7 12.6 11.7 12.0 13.4 13.1 13.2 13.8 13.6 13.7 25 10.1 9.2 9.5 12.8 11.8 12.1 13.7 13.3 13.5 13.9 13.4 13.7

26 10.0 9.1 9.4 12.6 11.9 12.2 13.5 13.3 13.4 13.8 13.5 13.6 27 10.3 9.3 9.7 13.2 12.2 12.7 13.7 13.3 13.5 13.9 13.4 13.6 28 10.6 9.6 9.9 13.3 12.5 12.8 13.8 13.4 13.6 13.4 13.1 13.2 29 10.8 9.9 10.3 13.5 12.6 12.9 13.8 13.3 13.6 13.4 13.0 13.2 30 11.6 10.5 10.9 13.3 12.7 12.9 13.9 13.5 13.7 13.5 12.9 13.2 31 12.0 10.9 11.2 --- --- --- 13.7 13.4 13.5 13.2 12.9 13.1

Month 12.0 8.4 9.8 13.5 11.2 12.2 13.9 11.4 12.7 14.0 12.6 13.5



— 15 —




1 13.4 12.9 13.2 13.4 13.0 13.2 12.8 11.9 12.3 10.5 9.9 10.2 2 13.6 13.4 13.4 13.3 12.9 13.2 12.7 11.8 12.3 10.2 9.5 9.9 3 13.6 13.4 13.5 13.6 13.1 13.4 13.1 12.0 12.6 9.9 9.2 9.6 4 13.6 13.4 13.5 13.8 13.3 13.5 13.2 12.4 12.8 9.8 9.1 9.4 5 13.6 13.4 13.5 13.8 13.3 13.5 13.2 12.4 12.8 9.8 9.0 9.4

6 13.7 13.4 13.6 13.7 13.2 13.4 13.0 12.0 12.6 9.8 9.0 9.3 7 13.7 13.4 13.6 13.5 13.0 13.3 12.4 11.5 11.9 9.7 8.8 9.2 8 13.7 13.4 13.5 13.5 13.1 13.3 12.1 11.2 11.6 9.6 8.5 9.0 9 13.7 13.4 13.6 13.6 13.0 13.3 12.1 11.0 11.4 9.5 8.3 8.8

10 13.7 13.4 13.6 13.3 12.8 13.1 11.3 10.9 11.0 9.2 8.2 8.7

11 13.6 13.3 13.4 12.9 12.4 12.6 11.3 10.9 11.1 9.2 8.4 8.7 12 13.4 13.1 13.2 12.4 11.9 12.1 11.4 10.8 11.1 9.5 8.4 9.0 13 13.4 13.1 13.2 12.8 12.1 12.5 11.7 11.2 11.5 10.2 9.1 9.6 14 13.2 13.0 13.1 13.2 12.8 13.0 12.0 11.6 11.8 10.5 9.6 10.0 15 13.4 13.0 13.2 13.1 12.6 12.9 11.9 11.3 11.6 10.2 9.5 9.8

16 13.5 13.1 13.3 13.0 12.6 12.8 11.5 10.9 11.3 9.9 9.2 9.5 17 13.7 13.2 13.5 13.4 12.8 13.0 11.6 10.7 11.1 9.9 8.9 9.4 18 13.7 13.4 13.5 13.1 12.6 12.9 10.9 10.3 10.7 9.5 8.8 9.2 19 13.7 13.2 13.5 13.4 12.6 13.0 10.6 10.0 10.3 9.4 8.7 9.0 20 13.7 13.4 13.5 13.8 12.9 13.3 11.4 10.6 11.1 9.2 8.2 8.7

21 13.8 13.3 13.6 13.9 13.2 13.5 11.7 11.3 11.5 8.8 8.0 8.3 22 13.7 13.5 13.6 14.0 13.3 13.6 11.4 10.8 11.2 8.4 7.6 8.0 23 13.6 13.4 13.5 13.9 13.2 13.5 10.9 10.4 10.7 8.1 7.3 7.7 24 13.6 13.3 13.5 13.7 13.0 13.3 10.7 10.2 10.5 9.0 8.0 8.5 25 13.6 13.3 13.4 13.6 12.9 13.2 11.2 10.6 10.9 9.1 8.2 8.6

26 13.6 13.2 13.4 13.6 12.8 13.2 11.5 10.9 11.2 9.7 8.4 9.0 27 13.4 12.9 13.2 13.6 12.8 13.1 11.2 10.7 11.0 9.5 8.8 9.1 28 13.8 13.3 13.5 13.6 12.8 13.2 10.7 10.3 10.5 9.4 8.8 9.1 29 --- --- --- 13.4 12.7 13.0 10.7 10.3 10.4 9.3 8.7 9.0 30 --- --- --- 13.2 12.5 12.8 10.5 10.0 10.3 9.1 8.5 8.8 31 --- --- --- 12.9 12.2 12.5 --- --- --- 8.7 8.2 8.4

Month 13.8 12.9 13.4 14.0 11.9 13.1 13.2 10.0 11.4 10.5 7.3 9.1



— 16 —




1 8.4 7.9 8.1 7.9 7.5 7.7 8.8 7.7 8.1 7.9 6.8 7.2 2 8.3 7.5 7.9 8.1 7.5 7.8 8.6 7.6 8.0 7.8 6.7 7.3 3 8.7 8.0 8.3 8.6 7.6 8.0 8.5 7.5 8.0 8.2 7.2 7.6 4 8.9 8.0 8.5 8.4 7.7 8.0 8.6 7.7 8.1 8.3 7.3 7.8 5 9.2 8.3 8.8 8.5 7.5 7.9 8.4 7.8 8.1 8.8 7.2 7.9

6 9.2 8.5 8.8 8.2 7.4 7.7 8.3 7.7 7.9 9.0 7.6 8.1 7 8.9 8.4 8.6 8.0 7.2 7.5 8.5 7.6 7.8 8.9 7.6 8.0 8 9.0 8.2 8.5 7.7 7.1 7.4 8.6 7.5 7.9 9.0 7.6 8.0 9 9.0 8.3 8.6 7.8 6.9 7.4 8.5 7.5 7.9 8.8 7.6 7.9

10 8.7 8.2 8.4 7.6 6.8 7.2 8.4 7.5 7.8 8.8 7.4 8.0

11 8.9 8.1 8.5 7.8 6.8 7.3 8.4 7.4 7.8 8.8 7.2 7.9 12 8.4 7.9 8.1 7.9 6.9 7.4 8.1 7.3 7.6 9.6 7.2 7.8 13 8.8 7.7 8.2 8.1 7.1 7.6 8.4 7.4 7.9 8.9 7.5 8.0 14 8.7 7.9 8.3 8.0 7.2 7.6 8.4 7.6 8.0 9.2 7.7 8.3 15 8.6 7.9 8.2 7.8 6.8 7.3 8.6 7.8 8.2 8.8 7.8 8.2

16 8.9 7.8 8.3 7.6 6.8 7.1 8.9 8.1 8.4 9.4 7.9 8.6 17 8.9 7.8 8.3 7.4 6.6 7.0 9.2 8.2 8.6 9.9 8.4 8.9 18 8.8 7.8 8.3 7.4 6.6 6.9 9.2 8.2 8.5 10.6 8.3 9.0 19 8.9 7.9 8.3 7.2 6.3 6.7 9.1 8.0 8.5 9.9 8.5 8.9 20 9.1 7.9 8.4 7.2 6.3 6.7 9.0 7.8 8.3 9.7 8.3 8.7

21 8.9 7.8 8.3 7.3 6.3 6.7 8.8 7.5 8.1 9.5 8.2 8.6 22 8.5 7.6 8.0 7.2 6.3 6.7 8.6 7.3 7.8 9.7 8.4 8.8 23 8.4 7.3 7.8 7.2 6.5 6.8 8.6 7.3 7.8 10.2 8.2 8.9 24 8.2 7.1 7.7 7.8 6.7 7.2 8.7 7.2 7.7 9.9 8.5 9.0 25 7.8 7.0 7.4 7.8 6.9 7.3 8.8 7.0 7.7 10.9 8.3 9.2

26 7.5 6.7 7.2 8.3 7.1 7.6 8.8 7.0 7.7 10.8 8.3 9.3 27 7.9 6.8 7.2 8.1 7.1 7.4 8.6 6.9 7.4 10.8 8.7 9.5 28 7.3 6.8 7.1 8.4 7.2 7.7 8.1 6.9 7.3 11.0 8.4 9.5 29 7.7 6.7 7.2 8.3 7.4 7.8 8.7 6.8 7.4 9.6 8.4 8.8 30 8.4 7.6 8.0 8.6 7.7 8.1 8.2 6.7 7.4 11.1 8.2 9.1 31 --- --- --- 8.8 7.7 8.1 7.9 6.7 7.2 --- --- ---

Month 9.2 6.7 8.1 8.8 6.3 7.4 9.2 6.7 7.9 11.1 6.7 8.4

Max Min Mean

Year 14.0 6.3 10.6



— 17 —

TURBIDITY, WATER, UNFILT, NEAR IR LED LIGHT, 780-900 NM, DETECT ANG. 90 DEG, FORMAZIN NEPHELOMETRIC UNITS WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013



1 15 1.1 2.2 13 2.2 6.9 78 0.5 6.0 2.7 1.6 1.7 2 14 0.7 2.4 20 1.4 5.2 47 2.9 7.2 3.3 1.7 1.9 3 6.7 1.1 3.0 9.0 0.9 2.5 97 0.9 7.9 2.6 1.7 1.9 4 10 1.9 3.3 26 0.9 2.6 99 0.2 3.2 2.5 1.7 1.9 5 7.3 2.5 4.4 400 0.5 5.8 19 0.1 1.9 2.2 1.7 1.8

6 10 0.8 3.6 32 1.6 6.7 21 0.1 2.0 1.9 1.6 1.7 7 8.4 0.6 2.4 140 0.8 7.3 9.7 0.8 2.2 1.9 1.5 1.6 8 5.6 1.8 3.1 24 0.7 5.8 2.6 1.2 1.5 2.9 1.5 1.6 9 11 2.5 3.4 48 0.4 3.9 1.8 1.0 1.2 1.8 1.4 1.5

10 14 2.5 5.2 10 1.1 4.9 2.1 0.9 1.1 1.6 1.3 1.4

11 8.9 4.5 5.4 30 2.3 6.8 3.8 0.9 1.1 7.4 1.2 1.5 12 9.9 2.9 5.3 24 2.6 9.4 2.8 0.8 1.0 1.5 1.2 1.2 13 92 2.9 6.3 30 1.3 6.4 5.0 0.8 0.9 3.2 1.3 1.6 14 84 1.0 9.2 11 0.2 2.2 9.6 1.0 4.0 2.4 1.5 1.7 15 44 0.4 1.4 2.7 0.0 0.6 9.3 1.2 6.3 2.3 1.6 1.9

16 6.2 0.3 1.1 780 0.1 0.8 9.0 0.9 5.2 7.1 2.0 2.6 17 22 0.3 1.5 320 1.1 2.1 7.1 1.3 4.3 320 1.6 3.6 18 230 1.4 3.5 3.3 1.0 1.2 7.5 0.8 5.5 24 1.4 1.8 19 9.3 1.7 3.1 3.2 0.5 0.7 11 0.6 1.0 2.4 1.2 1.4 20 14 1.3 3.0 5.5 0.7 0.8 10 1.7 2.4 150 1.2 1.5

21 4.1 1.2 2.2 5.4 0.4 1.1 3.5 1.2 1.6 2.1 1.1 1.3 22 6.8 1.0 2.0 1.5 0.5 0.6 2.1 1.3 1.6 3.1 0.9 1.0 23 280 1.3 6.7 2.5 0.7 1.1 1.8 1.2 1.4 57 0.8 1.0 24 590 2.3 27 27 0.5 1.2 1.7 1.1 1.3 290 0.8 6.9 25 690 3.4 17 6.3 0.4 1.0 2.4 1.0 1.2 27 1.0 2.7

26 560 3.1 9.3 1.7 0.5 0.8 1.6 1.1 1.2 2.9 1.1 1.3 27 520 3.3 83 40 0.2 0.5 1.8 1.1 1.3 2.9 0.9 1.4 28 710 4.0 460 100 0.3 8.0 3.4 1.3 1.6 17 0.9 1.4 29 590 5.2 25 48 1.1 9.5 2.4 1.4 1.5 16 0.9 2.4 30 460 1.8 12 70 0.4 1.1 1.8 1.3 1.5 200 3.0 6.7 31 30 2.5 7.6 --- --- --- 3.3 1.4 1.6 300 9.1 13

Max 710 5.2 460 780 2.6 9.5 99 2.9 7.9 320 9.1 13 Min 4.1 0.3 1.1 1.5 0.0 0.5 1.6 0.1 0.9 1.5 0.8 1.0



— 18 —




1 18 7.7 11 8.7 5.2 6.1 4.2 0.8 1.2 190 4.3 18 2 150 4.3 5.5 6.4 3.5 4.5 5.5 0.8 1.2 760 4.2 7.2 3 33 3.3 4.6 14 3.5 4.2 2.2 0.7 0.9 790 4.4 210 4 8.6 2.2 3.0 34 1.5 3.4 9.2 0.7 1.0 740 3.4 72 5 84 2.7 6.6 59 1.2 1.5 3.4 0.8 1.4 320 4.7 14

6 12 1.6 1.8 2.6 1.2 1.5 4.6 0.9 1.3 110 6.5 29 7 21 1.4 1.6 5.0 1.2 1.6 7.7 0.9 1.8 250 4.4 54 8 270 1.3 1.6 1.9 1.0 1.3 20 1.1 1.5 97 2.9 9.4 9 740 1.3 1.6 1.6 0.9 1.2 13 1.1 1.6 33 3.0 6.8

10 80 1.3 1.6 1.2 0.9 0.9 58 1.1 3.6 65 1.7 3.3

11 60 1.1 1.5 2.4 1.0 1.1 130 1.4 2.7 19 2.8 3.4 12 26 1.2 1.4 36 1.3 2.1 6.6 2.3 2.8 4.2 2.6 3.4 13 4.4 1.5 1.6 36 3.7 14 74 2.5 6.5 4.0 2.0 2.8 14 10 1.4 1.6 80 7.6 16 89 1.4 2.8 5.2 1.9 2.5 15 5.1 1.2 1.4 57 2.6 3.8 3.7 1.0 1.3 5.6 1.9 2.5

16 1.5 1.2 1.3 130 1.7 9.9 1.9 0.8 1.0 3.4 1.9 2.4 17 2.1 1.1 1.2 59 1.4 6.5 2.2 0.6 0.9 11 1.9 2.8 18 3.4 1.1 1.1 20 1.0 3.5 5.3 1.0 1.3 9.8 2.1 4.6 19 1.6 1.0 1.1 5.6 1.2 2.9 130 1.6 9.1 10 3.1 5.0 20 2.8 1.0 1.2 2.8 0.6 1.4 120 0.4 9.1 15 3.6 7.4

21 1.7 1.0 1.2 1.0 0.6 0.7 190 0.6 5.4 12 3.6 6.1 22 59 1.1 9.9 6.0 0.6 0.8 180 2.8 80 14 2.7 4.6 23 90 6.9 15 3.2 0.7 0.9 140 3.3 55 6.6 3.1 4.0 24 13 4.0 4.8 1.4 0.6 0.7 110 6.9 21 5.1 2.3 3.4 25 7.8 3.9 6.5 1.4 0.6 0.8 79 0.2 11 5.6 1.7 3.2

26 20 5.1 6.6 1.1 0.6 0.7 65 1.0 7.8 7.5 2.0 3.0 27 6.6 2.5 4.1 1.2 0.6 0.7 420 6.7 78 8.0 2.1 3.4 28 8.0 4.2 5.2 10 0.5 0.7 800 6.8 8.5 6.3 2.3 3.4 29 --- --- --- 7.0 0.6 0.8 9.5 4.6 7.6 4.3 2.1 2.9 30 --- --- --- 8.7 0.7 0.8 30 4.3 6.3 25 2.7 3.5 31 --- --- --- 2.0 0.7 0.8 --- --- --- 30 2.6 3.3

Max 740 7.7 15 130 7.6 16 800 6.9 80 790 6.5 210 Min 1.5 1.0 1.1 1.0 0.5 0.7 1.9 0.2 0.9 3.4 1.7 2.4



— 19 —




1 5.4 2.0 3.1 70 2.6 3.6 8.6 1.3 2.1 7.4 0.9 1.4 2 5.2 2.0 2.9 6.5 2.8 3.5 3.8 1.2 1.9 110 1.5 2.3 3 4.8 1.9 2.8 9.1 2.8 3.5 3.0 1.2 1.7 28 1.3 2.0 4 3.9 1.9 2.6 4.4 2.3 3.1 2.5 1.1 1.6 2.4 1.0 1.4 5 3.2 1.8 2.5 4.3 2.2 3.2 11 1.4 2.2 120 0.6 1.2

6 3.3 1.9 2.6 3.8 2.4 3.1 12 1.3 2.0 8.4 0.6 1.1 7 3.2 2.0 2.6 4.3 2.8 3.4 12 1.3 2.4 140 0.5 1.0 8 3.0 1.5 2.1 13 2.6 3.3 11 1.5 2.4 42 0.5 0.8 9 3.7 1.5 2.0 48 2.7 3.5 2.4 0.8 1.3 220 0.8 2.1

10 60 2.1 2.8 5.1 2.7 3.5 5.2 0.7 1.3 12 0.9 1.7

11 160 3.7 6.3 4.0 2.5 3.4 1.6 0.4 0.7 2.3 0.7 1.4 12 69 2.9 6.8 4.1 2.3 3.2 15 0.6 1.6 2.4 0.6 1.1 13 20 3.4 6.5 4.4 2.7 3.3 7.0 0.9 1.5 6.1 0.4 0.9 14 17 2.9 6.6 4.3 2.9 3.5 15 0.8 1.5 12 0.3 0.6 15 28 14 21 5.4 2.0 2.8 52 0.7 2.2 1.6 0.2 0.6

16 24 13 19 3.6 1.7 2.6 10 0.5 0.8 1.3 0.2 0.4 17 24 4.1 14 4.0 1.2 2.0 4.4 0.4 0.6 6.4 0.1 0.5 18 12 0.5 3.1 11 1.3 1.7 1.6 0.4 0.5 16 0.6 1.3 19 3.6 2.1 2.9 8.4 1.5 2.1 2.4 0.2 0.4 2.4 0.5 1.2 20 3.6 1.9 2.6 21 2.2 3.0 1.8 0.2 0.4 33 1.1 3.2

21 3.9 2.0 2.6 4.5 2.9 3.6 1.6 0.3 0.7 170 0.9 2.6 22 25 2.0 2.6 4.4 2.7 3.6 15 1.0 2.9 3.4 0.6 1.9 23 3.3 2.0 2.4 40 2.9 3.6 3.8 0.7 1.4 45 0.9 1.7 24 3.3 1.8 2.3 5.3 2.9 3.5 5.3 0.6 1.7 6.4 0.8 1.3 25 3.8 1.6 2.3 26 2.6 3.9 5.9 1.6 2.4 2.5 0.8 1.2

26 3.5 1.8 2.1 8.9 2.3 4.6 49 1.7 2.7 40 1.0 1.5 27 66 1.3 2.1 24 3.8 7.1 18 0.9 1.4 46 0.9 2.1 28 11 3.8 6.9 20 9.7 15 19 0.7 1.5 7.0 2.4 3.0 29 12 3.3 5.3 21 4.9 9.7 11 0.7 3.3 8.9 1.3 2.0 30 7.2 2.5 3.8 12 2.5 7.8 23 1.0 3.2 5.1 0.8 1.2 31 --- --- --- 8.6 2.1 5.2 4.7 0.8 1.4 --- --- ---

Max 160 14 21 70 9.7 15 52 1.7 3.3 220 2.4 3.2 Min 3.0 0.5 2.0 3.6 1.2 1.7 1.6 0.2 0.4 1.3 0.1 0.4

Max Min Median

Year Maximum

800 14 460

Year Minimum

1.0 0.0 0.4

water-data report 2013 04174500 huron river at ann arbor, mi · location.--lat 42°17′13″, long...

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