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USGS Daily Statistics for Puerto Rico

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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 50093120 RIO GRANDE DE PATILLAS BLW LAGO PATILLAS, PR


Patillas Municipio, Puerto Rico
Hydrologic Unit Code 21010004
Latitude  18°00'59", Longitude  66°01'25" NAD27
Drainage area 25.67  square miles
Contributing drainage area 25.6  square miles
Gage datum 137.79 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 2005-10-01 -> 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 20 7.9 6.9 33 70 49 52 140 41 57 107 51
2 27 7.7 7.1 12 69 57 70 68 33 62 82 87
3 19 6.1 6.9 9.2 42 74 74 120 84 132 68 24
4 28 6.3 5.1 8.7 31 81 71 88 42 87 84 24
5 26 6.6 4.7 2.1 49 82 49 79 102 67 116 18
6 6.7 5.4 6.5 1.4 47 81 67 50 113 155 108 15
7 12 60 5.6 1.1 36 84 59 54 72 155 109 55
8 17 39 3.4 0.98 30 47 79 50 154 145 94 37
9 21 31 1.5 0.89 35 29 95 46 93 66 124 35
10 31 14 1.3 0.87 28 18 105 48 52 100 135 29
11 28 12 1.3 0.81 25 27 66 40 72 198 146 47
12 34 11 2.3 2.8 21 45 48 35 63 103 146 58
13 35 9.1 3.2 12 60 22 51 31 100 82 86 34
14 33 9.2 2 9.7 34 29 61 69 45 84 77 19
15 69 14 1.8 6.7 22 25 76 47 43 110 103 22
16 43 5.2 1.2 8 36 28 40 34 39 165 131 28
17 21 6.6 0.73 16 54 35 50 112 38 127 78 30
18 26 9.4 0.62 14 138 29 66 46 295 118 114 34
19 18 9.6 0.53 6.7 49 54 40 65 189 84 36 35
20 19 6.3 0.46 35 83 74 32 181 249 64 47 31
21 14 6.5 0.4 34 54 71 113 124 401 67 62 37
22 9.3 24 0.35 20 39 85 96 186 245 89 67 33
23 9.9 10 19 29 26 98 71 274 165 94 89 29
24 14 8.9 5.3 9.3 41 57 64 206 67 57 85 15
25 11 8.9 5.2 12 56 56 46 94 89 42 58 53
26 9.2 9.1 3.3 20 9 60 37 103 60 100 49 16
27 12 5.2 1.7 9.5 31 63 41 75 57 216 39 23
28 11 3 0.52 9.2 65 64 43 48 55 150 42 30
29 16 9.9 0.51 51 73 35 36 82 34 132 34 48
30 16   0.47 50 63 28 85 103 52 103 41 31
31 9.8   44   63   81 40   89   17