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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 01440000 Flat Brook near Flatbrookville NJ


Sussex County, New Jersey
Hydrologic Unit Code 02040104
Latitude  41°06'22", Longitude  74°57'09" NAD83
Drainage area 64.0  square miles
Gage datum 347.73 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 1923-10-01 -> 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
1 133 116 152 242 175 127 82 48 46 73 82 141
2 132 113 155 247 157 135 72 47 74 62 78 137
3 135 137 154 262 150 111 61 50 55 57 92 124
4 126 142 160 247 157 103 62 55 50 53 89 131
5 117 124 180 257 147 98 59 54 51 51 80 129
6 129 112 184 273 148 104 67 45 53 59 76 141
7 125 120 197 261 146 107 59 49 65 54 77 147
8 125 125 179 244 139 105 59 44 63 51 84 147
9 130 111 194 210 138 91 67 47 59 69 109 131
10 137 106 186 208 138 88 72 62 45 52 97 125
11 123 136 199 189 154 87 59 52 40 49 94 136
12 123 131 215 187 162 87 50 47 42 62 90 152
13 123 120 206 194 160 87 56 52 54 57 95 135
14 121 133 221 189 144 89 69 54 45 60 98 135
15 119 137 233 188 144 88 64 51 50 70 101 125
16 112 132 210 253 141 87 58 53 53 68 97 118
17 104 126 215 228 158 86 52 51 75 58 107 124
18 104 127 218 184 151 79 50 55 69 60 100 141
19 115 130 206 175 148 83 54 108 68 69 92 124
20 124 130 212 167 138 86 50 63 65 85 108 111
21 112 136 215 165 129 81 46 47 61 85 107 151
22 120 139 232 170 122 91 53 54 64 63 108 144
23 122 142 237 174 115 87 62 59 50 66 114 122
24 133 149 229 163 122 80 66 58 57 67 101 134
25 184 180 220 170 126 71 48 54 55 67 108 147
26 171 172 206 163 129 70 48 47 51 79 121 131
27 160 156 212 165 127 79 48 46 53 87 118 127
28 164 156 225 162 115 91 54 91 75 92 112 128
29 136 149 239 164 127 89 58 74 79 91 132 126
30 125   230 156 140 92 50 49 63 95 130 132
31 124   243   117   47 41   92   151