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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 19 6.3 6.9 33 70 49 52 140 41 57 71 52
2 26 6.1 7.1 12 69 57 70 68 33 62 57 88
3 18 5.2 6.9 9.2 42 74 74 120 84 132 56 24
4 28 6.6 5.1 8.7 31 81 71 88 42 87 76 23
5 25 6.9 4.7 2.1 49 82 49 79 102 67 110 17
6 5 5.7 6.5 1.4 47 81 67 50 113 155 101 13
7 10 63 5.6 1.1 36 84 59 54 72 155 102 54
8 16 42 3.4 0.98 30 47 79 50 154 145 88 33
9 21 33 1.5 0.89 35 29 95 46 93 66 123 31
10 32 15 1.3 0.87 28 18 105 48 52 102 120 25
11 28 13 1.3 0.81 25 27 66 40 72 205 131 44
12 35 11 2.3 2.8 21 45 48 35 63 106 139 54
13 36 9.6 3.2 12 60 22 51 31 100 84 82 25
14 34 9.7 2 9.7 34 29 61 69 45 87 81 15
15 72 15 1.8 6.7 22 25 76 47 43 113 109 19
16 45 5.5 1.2 8 36 28 40 34 39 171 138 26
17 22 6.9 0.73 16 54 35 50 112 38 131 82 27
18 28 9.4 0.62 14 138 29 66 46 295 122 120 27
19 19 9.1 0.53 6.7 49 54 40 65 189 87 37 25
20 20 6.3 0.46 35 83 74 32 181 249 67 42 18
21 15 6.5 0.4 34 54 71 113 124 401 70 58 23
22 9.8 24 0.35 20 39 85 96 186 245 93 69 18
23 10 10 19 29 26 98 71 274 165 98 93 15
24 15 8.9 5.3 9.3 41 57 64 206 67 59 88 7.3
25 12 8.9 5.2 12 56 56 46 94 89 43 60 55
26 9.6 9.1 3.3 20 9 60 37 103 60 103 50 16
27 11 5.2 1.7 9.5 31 63 41 75 57 226 39 23
28 9.7 3 0.52 9.2 65 64 43 48 55 156 43 29
29 14 9.9 0.51 51 73 35 36 82 34 137 34 49
30 15   0.47 50 63 28 85 103 52 107 41 30
31 8.4   44   63   81 40   91   16