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Water Resources Data - Ohio, Water Year 97, Vol. 1 | Great Miami River Basin

				03272000 TWIN CREEK NEAR GERMANTOWN, OHIO

LOCATION.--Lat 39038'10", long 84023'48", in NW 1/4 sec. 11, T.3 N., R.4 E., Montgomery County, Hydrologic Unit   
05080002, on right bank 0.3 mi downstream from Germantown Dam, 1.5 mi northwest of Germantown, and 3 mi upstream 
from Little Twin Creek.
DRAINAGE AREA.--275 mi2.
PERIOD OF RECORD.--April 1914 to December 1923, December 1926 to current year.
REVISED RECORDS.--WSP 403: 1914(M). WSP 1385: 1915(M).
GAGE.--Water-stage recorder. Datum of gage is 700.24 ft above sea level. Prior to Dec. 18, 1926, nonrecording gage 
at site 1 mi downstream at datum 12.49 ft higher.
REMARKS.--Records good except for periods of estimated record, which are fair. Flood flow regulated by Germantown 
retarding basin, 0.3 mi upstream, beginning in 1920.
COOPERATION.--Gage-height tapes and 8 discharge measurements furnished by Miami Conservancy District.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 9,390 ft3/s July 8, 1915, gage height 11.7 ft, from graph based   
on gage readings, site and datum then in use.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Mar. 25, 1913, reached a stage of 18.3 ft, original site and datum;   
discharge, 66,000 ft3/s, computed by Miami 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       e33       28     1730      287      246      708      283      107     4750      334     26        9.6
   2       e27       28     1430      268      228     3890      239      150     6490      357     24        9.2
   3       e22       29      691      246     e250     1780      215     1180     3170      829     25        9.6
   4       e21       29      414      225     1250     1080      201     1050      962      271     23        9.2
   5       e20       28      301      742     3160      778      205      529      606      168     21        8.6
 
   6       e19       27      309      498     1230      891      229      356      420      129     20        8.3
   7       e19       32      261      296      761      658      194      256      312      108     19        7.9
   8       e19       44      224     e200      558      487      165      228      260       95     18        8.8
   9       e19       45      189     e150      416      538      150      230      234       92     17        8.3
  10       e19       49      163     e120     e300     1590      139      191      182      202     17        9.8
 
  11       e18       47      158     e110     e250      913      134      166      159      134     17       10  
  12       e18       44      490     e100     e220      563      164      154      146       98     17        9.8
  13       e18       41      938     e120     e210      442      229      145      140       82     30        9.0
  14       e16       38      479     e140     e180     1510      185      133      127       74     28        8.4
  15       e15       36      310     e150     e160     1150      155      129      109       69     25        8.0
 
  16       e16       33      618     e120     e150      657      144      116      100       61     25        7.5
  17       e19       34     4680     e110     e140      515      140      108      133       55     25        7.1
  18       e31       36     3350     e110      157      735      132      105      242       52     80        7.0
  19       e36       39      961     e100      196     1260      125      102      351       49     67        7.0
  20       e35       38      525     e100      264      704      120       95      198       44    111        7.0
 
  21       e33       38     e350     e420      358      524      118       88      146       40     72        7.0
  22       e28       37     e250    e1200      622      413      115       83      121       42     41        6.9
  23        29       35     e200    e1000      336      312      107       80      112       44     27        7.0
  24        28       33     3780     e400      241      265      105       78       95       45     19        7.0
  25        27       57     1510     e300      206      243      104       86       84       40     17        7.0
 
  26        27     1270      644     e260      201      234       94      110       85       36     16        7.0
  27        30      717      434      644      798      207       90      136       99       34     16        7.0
  28        33      331      460     1040      788      198      104      135       80       50     15        7.1
  29        31      228      634      521      ---      546      100      116       73       33     11        7.5
  30        28      556      443      372      ---      474       92      109      163       33     10        7.2
  31        29      ---      344      289      ---      351      ---      617      ---       28      9.9      ---
 
 TOTAL     763     4027    27270    10638    13876    24616     4577     7168    20149     3728    888.9    240.8
 MEAN     24.6      134      880      343      496      794      153      231      672      120     28.7     8.03
 MAX        36     1270     4680     1200     3160     3890      283     1180     6490      829      111       10
 MIN        15       27      158      100      140      198       90       78       73       28      9.9      6.9
 CFSM      .09      .49     3.20     1.25     1.80     2.89      .55      .84     2.44      .44      .10      .03
 IN.       .10      .54     3.69     1.44     1.88     3.33      .62      .97     2.73      .50      .12      .03
 
 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 1997, BY WATER YEAR (WY)                                 
 
 MEAN     56.4      159      300      450      455      528      479      342      230      132     73.2     42.0
 MAX       718      978     1398     2669     1214     1304     1421     1723     1237      882      636      509
 (WY)     1987     1986     1991     1937     1950     1978     1922     1996     1958     1929     1979     1950
 MIN      4.07     5.24     5.19     9.23     20.1     54.7     69.5     26.4     14.1     8.46     5.77     3.79
 (WY)     1945     1945     1945     1945     1935     1954     1941     1934     1934     1930     1988     1953
 
 SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1921 - 1997
 
 ANNUAL TOTAL                      201365                     117941.7                                           
 ANNUAL MEAN                          550                        323                        268                  
 HIGHEST ANNUAL MEAN                                                                        493              1996
 LOWEST ANNUAL MEAN                                                                          43.3            1954
 HIGHEST DAILY MEAN                  7550     Apr 30            6490     Jun  2            8450       Jan 22 1959
 LOWEST DAILY MEAN                     15     Oct 15               6.9   Sep 22               2.0     Sep 25 1941
 ANNUAL SEVEN-DAY MINIMUM              17     Sep  8               7.0   Sep 18               2.7     Sep 19 1941
 INSTANTANEOUS PEAK FLOW                                        6780     Jun  2            8790       Jan 27 1952
 INSTANTANEOUS PEAK STAGE                                         27.10  Jun  2              29.19    Jan 22 1959
 INSTANTANEOUS LOW FLOW                                            6.9   Sep 22               1.5     Sep 25 1941
 ANNUAL RUNOFF (CFSM)                   2.00                       1.18                        .97               
 ANNUAL RUNOFF (INCHES)                27.24                      15.95                      13.23               
 10 PERCENT EXCEEDS                  1440                        738                        600                  
 50 PERCENT EXCEEDS                   169                        120                         82                  
 90 PERCENT EXCEEDS                    23                         16                         13                  

e Estimated.