U.S. Geological Survey
Water Resources Data - Ohio, Water Year 97, Vol. 2 | Ottawa River Basin

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                      	 04177000 OTTAWA RIVER AT  UNIVERSITY OF TOLEDO, TOLEDO, OHIO

LOCATION.--Lat 41039'29", long 83037'19", in NE 1/4 sec. 32, T.9 S., R.7 E., Lucas County, Hydrologic Unit 04100001, 
on left bank at auto bridge at University of Toledo, Toledo, Ohio, 0.4 mi downstream from Deline Ditch,5.6 mi 
upstream from Sibley Creek, and 10.9 mi upstream from mouth.
DRAINAGE AREA.--150 mi2. Area at site used prior to Sept 30, 1948, 150 mi2, revised.
PERIOD OF RECORD.--March 1945 to September 1948 (published as "Tenmile Creek at Toledo"), August 1976 to current year.
REVISED RECORDS.--WSP 1307: Drainage area.
GAGE.--Water-stage recorder. Datum of gage is 576.28 ft above sea level. (From Aug. 1976 to July, 1979, at site         
500 ft downstream. Prior to Sept. 30, 1948, water-stage recorder at site 2,500 ft upstream at datum 3.72 ft higher.
REMARKS.--Records fair except for periods of estimated record, which are poor. Water-quality data collected at this 
site.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of June 1, 1943, reached a stage of 15.1 ft present datum, from floodmark, 
Lucas County Sanitary Engineers; discharge, 3,400 ft3/s. Flood of Apr. 25, 1950, reached a stage of 15.0 ft present 
datum, from floodmark; discharge, 3,300 ft3/s.


			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       3.6      4.7       20       86      e62     1260       99       54      912    597        9.2     13  
   2       3.7      3.8       23       81      e56      823       81       37     1920    437        9.1     12  
   3       2.4      3.5       23       87      e54      527       74      225     2330    190       11       12  
   4       2.2      3.5       20       83      262      366       80      636     1930     95       46        9.4
   5       2.7      4.2       15      313      665      291      151      473     1130     56       17        8.7
 
   6       3.0      4.4       20      438      857      282      186      385      541     40       15        9.4
   7       3.5    141         15     e120      450      243      173      292      352     38       10        8.5
   8       3.2     84         13      e80      260      208      111      198      240     32        9.3      8.3
   9       8.5     37         12      e60     e150      187       79      160      172     35        9.1     11  
  10       7.6     23         12      e47     e110      224       64      121      122     24        7.7     39  
 
  11       6.3     16         44      e36      e80      230       58       90       91     22       13       14  
  12       9.9     11         53      e33      e60      162       98       99       78     19       23       16  
  13      12        7.9      102       30      e52      128       85       78       69     18       40       14  
  14      16        6.1       97       29      e45     1010       78       70       53     40       22       12  
  15      18        5.0       50       30      e41     1760       64       82       42     65       29       11  
 
  16      22        5.5       37       35      e38     1540       62       64       67     17      125       10  
  17      27        8.4      152       29      e37      646       59       58       50     15      306       99  
  18      64        9.5     e100      e26      e48      433       57       56       40     14      285       26  
  19      14        5.6      e50      e24     e100      330       52      137       36     12      124       76  
  20       4.7      5.0      e35      e23      495      262       48      135       32     12       65      820  
 
  21       6.5      4.5      e30      e22     1150      206       46      110      100     83       43      864  
  22       6.6      4.3      e23      324     1800      175       43       77      169     33       30      399  
  23      52        4.1       67      566     1560      127       40       63      106     25       21      153  
  24      20        5.7      394      494      766      103       41       57       64     22       80       78  
  25       6.0     17        677     e200      409      123       39      268      107     18       56       47  
 
  26       4.8     15        255     e150      324      125       36      480      389     16       64       35  
  27       5.7      9.2      134     e110     1270      108       33      302      443     15       39       27  
  28       4.9      7.2       89      e90     1670      100       41      162      187     14       26       21  
  29      15        6.9       97      e80      ---      116       38      304       91     12       20       19  
  30      71       27        122      e70      ---      122       38      597      142     11       16       19  
  31       8.1      ---      104      e66      ---      118      ---      607      ---      9.6     19        ---
 
 TOTAL   434.9    490.0     2885     3862    12871    12335     2154     6477    12005   2036.6   1589.4   2891.3
 MEAN     14.0     16.3     93.1      125      460      398     71.8      209      400     65.7     51.3     96.4
 MAX        71      141      677      566     1800     1760      186      636     2330      597      306      864
 MIN       2.2      3.5       12       22       37      100       33       37       32      9.6      7.7      8.3
 CFSM      .09      .11      .62      .83     3.06     2.65      .48     1.39     2.67      .44      .34      .64
 IN.       .11      .12      .72      .96     3.19     3.06      .53     1.61     2.98      .51      .39      .72
 
 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 1997, BY WATER YEAR (WY)                                 
 
 MEAN     63.7      103      136      114      165      294      242      137      136     53.0     29.3     43.3
 MAX       407      449      380      561      467      729      438      358      437      264      143      406
 (WY)     1987     1993     1978     1993     1990     1978     1977     1945     1989     1992     1980     1981
 MIN       .85     3.04     6.14     4.92     30.4     56.0     20.4     21.4     7.36     8.46      .82      .13
 (WY)     1947     1947     1947     1977     1978     1989     1946     1988     1988     1984     1946     1946
 
 SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1945 - 1997
 
 ANNUAL TOTAL                       36243.0                    60031.2                                           
 ANNUAL MEAN                           99.0                      164                        126                  
 HIGHEST ANNUAL MEAN                                                                        215              1993
 LOWEST ANNUAL MEAN                                                                          65.5            1995
 HIGHEST DAILY MEAN                  1520     Jun 20            2330     Jun  3            3500       Mar 14 1982
 LOWEST DAILY MEAN                      1.6   Sep 20               2.2   Oct  4                .00    Aug 24 1945
 ANNUAL SEVEN-DAY MINIMUM               2.8   Aug 24               3.0   Oct  2                .00    Aug 24 1945
 INSTANTANEOUS PEAK FLOW                                        2710     Jun  2 a          3950       Mar 14 1982
 INSTANTANEOUS PEAK STAGE                                         12.75  Jun  2              14.54    Mar 14 1982
 INSTANTANEOUS LOW FLOW                                            2.2   Oct  4                .00    Sep 19 1945
 ANNUAL RUNOFF (CFSM)                    .66                       1.10                        .84               
 ANNUAL RUNOFF (INCHES)                 8.99                      14.89                      11.43               
 10 PERCENT EXCEEDS                   264                        437                        315                  
 50 PERCENT EXCEEDS                    25                         54                         40                  
 90 PERCENT EXCEEDS                     3.8                        8.0                        7.0                

a Peaks above base shown in table of peak discharges and stages at continuous-record surface-water-discharge stations.
e Estimated.


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