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USGS Daily Statistics for the Nation

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 01395000 Rahway River at Rahway NJ


Union County, New Jersey
Hydrologic Unit Code 020301040104
Latitude  40°37'08", Longitude  74°17'00" NAD83
Drainage area 40.9  square miles
Gage datum 7.62 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 1921-10-01 -> 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 59 37 64 101 80 74 37 46 33 31 29 53
2 64 51 80 99 55 67 32 67 83 28 32 49
3 63 77 73 88 50 54 30 60 41 27 36 45
4 65 68 87 90 55 56 36 36 46 23 26 54
5 53 49 77 91 52 49 44 28 22 22 34 58
6 59 42 82 85 55 61 45 37 36 24 27 57
7 57 60 108 92 55 45 38 46 51 25 38 57
8 57 69 87 81 55 41 28 37 40 30 76 54
9 48 42 75 72 56 39 47 50 30 42 79 62
10 66 40 74 81 56 35 31 67 23 26 53 51
11 44 51 80 58 60 31 29 47 29 24 39 57
12 43 50 83 62 69 35 33 49 38 38 44 65
13 36 57 114 73 64 52 43 53 53 33 46 58
14 40 56 116 59 59 46 56 49 35 29 36 78
15 51 59 90 72 55 38 71 39 42 27 39 55
16 50 56 70 119 54 33 31 26 54 25 36 52
17 47 49 66 113 62 39 25 38 66 26 51 57
18 53 60 67 59 52 36 47 44 40 34 36 63
19 57 56 74 54 66 47 33 45 45 55 31 44
20 59 63 79 55 54 40 33 31 41 72 52 33
21 61 61 84 53 47 32 40 26 44 38 50 80
22 50 60 113 53 37 43 48 41 53 22 53 64
23 50 68 96 60 44 35 73 43 31 33 46 51
24 68 90 84 51 66 30 84 29 28 35 31 47
25 83 82 79 57 61 39 76 27 38 37 43 55
26 83 77 56 56 54 32 46 33 46 42 53 51
27 59 75 73 67 43 26 58 44 49 45 58 62
28 66 68 71 76 41 33 53 114 39 52 57 52
29 53 51 76 68 66 35 46 61 38 46 60 59
30 41   82 58 68 52 39 23 32 51 53 55
31 38   94   55   39 20   30   54