USGS
Water Resources Data - Ohio, Water Year 97, Vol. 1 | Beaver River Basin


		03097550 MAHONING RIVER AT OHIO EDISON POWER PLANT AT NILES, OHIO

LOCATION.--Lat 41010'21", long 80045'26", Trumbull County, Hydrologic Unit 05030103, on right bank 20 ft downstream 
from Conrail Spur Line, 100 ft downstream from Meander Creek, 0.2 mi upstream from Belmont Road, 0.4 mi downstream 
from Mosquito Creek in Niles.
DRAINAGE AREA.--854 mi2.
PERIOD OF RECORD.--October 1987 to current year.
GAGE.--Water-stage recorder. Datum of gage is 843.08 ft above sea level.
REMARKS.--Records fair. Water diverted upstream from station for municipal supply for cities of Niles, Warren, and 
Youngstown. Some sewage returned to river upstream from station. Water also diverted upstream and downstream from 
station for industrial use, some of which is returned to river upstream from station. Flow regulated by Berlin 
Lake, 37 mi upstream, beginning in 1942, by Milton Reservoir, 29 mi upstream, by Michael J. Kirwan Reservoir, 32 
mi upstream on West Branch, beginning in 1966 by Mosquito Creek Lake, 11 mi upstream, beginning in 1943, by Meander 
Creek Reservoir. U.S. Army Corp of Engineers satellite telemeter at station.


                   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      1090     1700     2860     1820     1310     2360      614      520     3010      499      492      415
   2      1160     1360     3730     1800     1290     2070      506      373     5670      553      492      405
   3      1160     1140     2900     1300     1300     2650      431      580     5560      494      493      403
   4       956      848     2270     1040     1530     1690      388     1030     3180      493      493      396
   5       772      814     2080     1160     2980     1720      385      887     2540      509      493      394
 
   6       727      804     2040     1380     3080     4180      393      700     2670      509      497      393
   7       719      767     2020     1310     2360     3350      381      734     2710      513      495      393
   8       671     1810     1900     1150     2090     2250      333      630     2700      507      492      395
   9       571    e2800     1790      981     1940     1880      310      630     2660      552      490      404
  10       476    e2700     1690      868     1790     3530      294      652     2450      501      492      462
 
  11       349    e2500     2110      618     1640     3490      297      676     2090      502      493      511
  12       320    e2400     5690      434     1190     2580     1130      682     1980      501      491      421
  13       288    e2300     5750      438      856     2320     3930      566     1770      498      510      373
  14       273    e2200     3020      381      716     3290     2590      440     1360      495      495      359
  15       266    e2100     2180      333      587     3830     1140      446     1210      497      513      353
 
  16       250     2000     2010      365      554     2720      841      506     1190      493      627      344
  17       235     1950     2920      341      540     1850     1290      507     1340      491      789      366
  18       429     2060     3900      347      579     1960     1510      464     1550      506      685      370
  19      1250     2180     3490      313     1310     2030     1040      941     2140      514      459      351
  20      2010     1770     2960      301     2650     2160      756     1290     1850      514      381      960
 
  21      1760     1550     2790      305     2400     1800      572     1170     1700      502      364      791
  22      1500     1270     2670      331     2050     1270      465      934     1310      495      388      466
  23      1570      970     2440      553     1880     1090      476      815     1090      492      409      373
  24      1890      857     3040      731     1710      947      577      677      676      497      418      341
  25      1860      966     3470      928     1190      730      537     1090      433      496      456      333
 
  26      1690     2850     2630     1000      725      963      448     2890      543      483      406      336
  27      1590     3360     2310      798     2110     1030      399     1890      562      487      379      325
  28      1570     2540     2110     1550     3480      696      600     1260      499      487      371      324
  29      1410     2120     2090     1780      ---      560      799     1650      493      492      365      333
  30      1600     2000     2040     1600      ---      506      611     1680      499      490      375      321
  31      1910      ---     1910     1390      ---      580      ---     1740      ---      493      408      ---
 
 TOTAL   32322    54686    84810    27646    45837    62082    24043    29050    57435    15555    14711    12411
 MEAN     1043     1823     2736      892     1637     2003      801      937     1915      502      475      414
 MAX      2010     3360     5750     1820     3480     4180     3930     2890     5670      553      789      960
 MIN       235      767     1690      301      540      506      294      373      433      483      364      321
 MED      1090     1980     2440      868     1590     1960      555      700     1740      497      492      383
 CFSM     1.22     2.13     3.20     1.04     1.92     2.35      .94     1.10     2.24      .59      .56      .48
 IN.      1.41     2.38     3.69     1.20     2.00     2.70     1.05     1.27     2.50      .68      .64      .54
 
 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1988 - 1997, BY WATER YEAR (WY)                                 
 
 MEAN      680      891     1058     1260     1275     1326     1023      953     1058      670      582      635
 MAX      2074     1935     2736     3088     2853     2881     2946     3113     3117     1403     1147     1652
 (WY)     1991     1993     1997     1993     1990     1993     1994     1996     1989     1990     1992     1990
 MIN       247      212      272      268      333      493      540      293      293      370      407      326
 (WY)     1989     1992     1992     1992     1992     1990     1988     1992     1992     1988     1988     1994
 
 SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1988 - 1997
 
 ANNUAL TOTAL                      548993                     460588                                             
 ANNUAL MEAN                         1500                       1262                        949                  
 HIGHEST ANNUAL MEAN                                                                       1262              1997
 LOWEST ANNUAL MEAN                                                                         546              1992
 HIGHEST DAILY MEAN                  9120     May 12            5750     Dec 13            9120       May 12 1996
 LOWEST DAILY MEAN                    235     Oct 17             235     Oct 17             183       Feb  9 1992
 ANNUAL SEVEN-DAY MINIMUM             283     Oct 11             283     Oct 11             196       Feb  5 1992
 INSTANTANEOUS PEAK FLOW                                        6630     Dec 12            9760       Apr 13 1994
 INSTANTANEOUS PEAK STAGE                                          9.70  Dec 12              13.35    Apr 13 1994
 INSTANTANEOUS LOW FLOW                                          223     Oct 17             183       Feb  9 1992
 ANNUAL RUNOFF (CFSM)                   1.76                       1.48                       1.11               
 ANNUAL RUNOFF (INCHES)                23.91                      20.06                      15.10               
 10 PERCENT EXCEEDS                  3030                       2670                       2250                  
 50 PERCENT EXCEEDS                  1140                        848                        513                  
 90 PERCENT EXCEEDS                   417                        373                        301                  
 


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