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USGS Surface-Water 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 07300500 Salt Fork Red River at Mangum, OK


Greer County, Oklahoma
Hydrologic Unit Code 11120202
Latitude  34°51'30", Longitude  99°30'30" NAD27
Drainage area 1,454  square miles
Contributing drainage area 1,319  square miles
Gage datum 1,491.44 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 1937-10-01 -> 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 38 46 43 53 110 355 86 70 35 16 34 27
2 37 47 48 53 167 269 89 69 14 29 68 26
3 37 48 46 76 148 243 43 85 25 175 31 26
4 37 49 58 189 122 331 61 34 35 107 34 29
5 38 67 50 70 118 259 44 32 32 44 32 37
6 40 83 47 52 88 273 41 19 30 46 26 33
7 39 50 44 43 146 186 197 19 16 76 24 30
8 50 45 44 42 163 180 81 16 18 96 32 29
9 58 42 45 45 205 344 59 11 15 65 31 31
10 43 44 49 44 116 343 62 10 14 34 26 32
11 41 46 50 63 188 194 76 15 44 41 22 36
12 37 42 43 53 294 180 61 8.8 34 103 21 40
13 38 45 41 77 182 211 62 9.5 90 42 20 39
14 41 43 45 84 150 206 36 39 46 40 25 34
15 41 43 59 85 143 155 89 28 41 80 25 36
16 45 45 62 59 360 347 35 19 79 65 33 45
17 44 47 57 56 280 83 54 39 66 71 36 42
18 40 47 67 56 244 105 40 35 52 213 32 38
19 40 48 55 90 270 107 148 24 96 94 30 35
20 41 55 55 159 244 105 111 16 109 74 35 36
21 41 50 55 71 280 208 30 27 73 34 29 35
22 50 51 56 52 128 190 38 25 38 75 28 36
23 50 53 60 84 138 124 26 20 35 70 27 35
24 40 51 60 149 257 185 26 40 41 54 27 34
25 42 51 48 116 188 155 37 42 37 34 32 32
26 47 52 53 121 231 79 29 46 34 28 26 33
27 47 62 47 146 617 60 19 52 28 25 27 33
28 44 48 49 137 449 62 11 85 19 24 27 32
29 38 51 52 197 185 116 15 37 22 25 26 32
30 40   56 146 309 61 14 15 18 24 26 33
31 41   52   159   26 20   28   40