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USGS Daily Statistics for Illinois

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 05527950 MILL CREEK AT OLD MILL CREEK, IL


Lake County, Illinois
Hydrologic Unit Code 07120004
Latitude  42°24'55", Longitude  87°58'09" NAD83
Drainage area 61.0  square miles
Gage datum 668.14 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1989-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 50 48 91 138 129 66 50 19 11 15 31 51
2 45 50 91 123 115 72 43 17 12 29 35 63
3 45 56 93 122 108 62 48 18 21 27 33 58
4 48 60 87 117 99 62 45 18 18 25 33 54
5 45 58 98 109 91 66 39 16 16 23 37 50
6 44 59 92 112 83 59 36 17 16 32 40 47
7 46 62 90 102 80 53 33 21 14 27 36 46
8 44 62 93 103 78 62 34 19 13 26 34 45
9 44 76 99 120 87 77 36 16 12 23 38 42
10 43 67 118 123 94 69 36 16 17 21 40 43
11 46 64 128 123 89 77 34 15 16 27 43 45
12 43 66 124 116 87 83 69 14 31 25 40 45
13 50 56 139 107 107 89 51 13 47 24 38 44
14 50 56 135 107 115 82 49 13 37 27 35 49
15 44 53 126 116 121 74 58 12 33 27 33 52
16 40 51 119 124 100 85 60 11 30 23 32 49
17 46 51 111 119 105 67 49 11 29 22 31 45
18 44 59 107 131 113 62 57 15 29 23 32 41
19 41 66 101 121 106 78 53 19 28 20 32 38
20 42 88 97 141 109 84 47 29 26 19 30 37
21 41 97 97 130 109 73 46 24 25 18 30 37
22 46 81 98 125 109 73 43 22 25 17 30 42
23 51 84 100 135 100 69 41 26 25 25 31 47
24 54 89 97 114 91 63 43 23 21 32 30 43
25 51 88 99 105 86 63 35 20 19 30 31 46
26 51 82 103 110 89 62 30 19 19 29 39 47
27 51 94 108 113 86 69 37 19 18 40 49 60
28 52 85 112 103 81 57 30 17 20 31 49 59
29 50 63 110 117 77 54 26 18 20 29 49 55
30 53   108 125 72 61 23 15 18 33 49 58
31 49   125   69   21 13   33   55