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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 01381500 Whippany River at Morristown NJ


Morris County, New Jersey
Hydrologic Unit Code 02030103
Latitude  40°48'26", Longitude  74°27'25" NAD83
Drainage area 29.4  square miles
Gage datum 260.01 feet above NGVD29
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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 -> 2023-09-30)

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 62 51 68 103 77 71 45 40 34 36 37 59
2 60 60 77 100 69 70 42 40 46 33 39 56
3 64 68 71 97 73 60 36 40 38 31 45 53
4 59 66 78 96 72 58 35 39 35 29 38 56
5 54 57 81 104 69 59 37 32 29 28 38 58
6 61 55 82 101 71 62 46 31 40 30 35 58
7 57 69 90 106 72 56 46 32 47 28 39 57
8 60 67 84 95 68 58 37 33 38 34 48 60
9 59 51 78 90 68 51 42 36 33 40 43 58
10 59 54 74 91 67 47 41 39 28 28 51 55
11 55 58 90 78 69 46 39 51 29 29 40 59
12 58 56 92 82 82 50 37 44 36 35 44 61
13 51 62 93 89 76 56 46 44 36 30 51 59
14 51 64 99 81 68 59 40 41 33 32 41 66
15 55 69 96 87 68 51 41 34 42 32 41 55
16 52 62 85 111 71 45 34 30 43 31 42 56
17 51 60 85 101 76 47 33 33 40 30 50 56
18 56 65 83 79 66 43 36 35 34 34 44 53
19 60 61 87 81 69 52 31 39 36 45 43 48
20 60 65 91 80 68 42 31 31 39 55 52 48
21 59 65 96 74 62 44 34 30 37 36 53 72
22 59 68 110 73 57 49 39 42 39 31 51 59
23 58 69 95 76 59 45 53 43 32 35 54 57
24 73 75 89 71 65 44 49 37 35 36 43 59
25 88 80 87 73 64 45 44 31 41 38 49 63
26 75 82 80 79 62 38 36 33 36 43 55 57
27 67 71 87 77 57 37 46 41 39 44 56 61
28 69 71 88 83 53 43 42 69 37 52 56 56
29 58 60 88 76 61 39 36 38 36 44 59 59
30 55   92 70 69 42 35 30 39 49 59 63
31 53   97   60   34 28   39   59