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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 51 49 93 140 132 68 50 19 11 15 31 51
2 46 52 93 123 117 74 43 17 12 29 35 63
3 46 57 95 120 110 63 48 18 21 27 33 58
4 49 61 89 116 101 64 45 18 18 25 33 54
5 46 60 98 108 93 67 39 16 16 23 37 50
6 45 60 93 111 84 61 36 17 16 32 40 47
7 47 64 91 102 82 55 33 21 14 27 36 46
8 45 64 94 103 79 63 34 19 13 26 34 45
9 45 78 100 121 89 77 36 16 12 23 38 42
10 44 69 120 125 96 69 36 16 17 21 40 43
11 47 66 130 125 91 77 34 15 16 27 43 46
12 44 68 126 117 89 83 69 14 31 25 40 46
13 51 57 142 108 110 89 51 13 47 24 38 45
14 51 57 138 108 118 82 49 13 37 27 35 50
15 45 54 129 118 124 74 58 12 33 27 33 54
16 41 52 121 126 103 85 60 11 30 23 32 51
17 47 52 113 121 107 67 49 11 29 22 31 46
18 45 60 109 134 116 62 57 15 29 23 32 42
19 42 68 102 124 108 78 53 19 28 20 32 39
20 43 90 97 144 112 84 47 29 26 19 30 38
21 42 99 98 133 111 73 46 24 25 18 30 38
22 47 83 99 127 112 73 43 22 25 17 30 42
23 52 87 102 137 102 69 41 26 25 25 31 48
24 56 91 98 117 93 63 43 23 21 32 30 44
25 53 90 100 107 88 63 35 20 19 30 31 47
26 53 83 104 112 91 62 30 19 19 29 39 48
27 52 96 110 115 88 69 37 19 18 40 49 61
28 53 87 114 105 83 57 30 17 20 31 49 60
29 51 63 112 120 79 54 26 18 20 29 49 57
30 54   109 128 74 61 23 15 18 33 49 59
31 50   127   71   21 13   33   56