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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 50049100 RIO PIEDRAS AT HATO REY, PR


San Juan Municipio, Puerto Rico
Hydrologic Unit Code 21010005
Latitude  18°24'34.38", Longitude  66°04'09.60" NAD27
Drainage area 15.2  square miles
Gage datum 16.4 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 1971-10-01 -> 2019-09-30)

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 43 39 49 32 70 53 27 32 67 46 71 52
2 38 30 42 28 67 52 41 48 56 72 64 69
3 40 31 34 52 40 58 30 87 50 56 69 76
4 32 36 29 36 52 57 36 41 52 52 99 64
5 60 59 34 34 34 47 42 58 63 49 63 62
6 62 29 31 33 41 34 38 43 119 55 49 48
7 54 30 37 29 48 35 84 37 69 54 103 46
8 38 28 26 29 96 37 36 35 45 94 125 49
9 45 29 22 29 89 54 51 48 55 58 108 53
10 65 25 23 35 88 75 32 52 200 86 73 93
11 50 29 31 39 62 37 73 44 113 67 56 83
12 40 28 39 49 67 41 52 55 73 55 75 48
13 43 27 40 38 56 34 71 42 52 43 131 38
14 65 34 32 45 66 39 61 53 73 85 70 61
15 71 28 25 68 68 45 44 60 96 69 112 56
16 45 32 25 50 42 37 82 68 94 85 81 65
17 41 28 23 63 40 36 42 80 67 67 77 41
18 43 46 23 56 46 37 47 61 122 61 87 44
19 40 39 33 50 35 66 38 46 57 57 63 34
20 52 43 30 59 82 41 60 153 197 60 61 41
21 44 42 30 64 84 44 72 101 135 71 83 41
22 46 32 32 62 42 35 75 113 152 100 87 52
23 53 40 43 73 111 38 57 215 107 64 59 45
24 40 29 44 60 54 57 49 111 89 61 59 45
25 40 45 35 55 70 30 58 74 69 62 53 37
26 32 33 35 59 68 29 40 45 90 59 51 52
27 32 40 29 56 85 43 63 76 61 80 51 46
28 41 34 45 39 39 37 63 53 52 103 60 57
29 40 27 79 83 56 40 56 83 60 62 52 64
30 30   46 83 50 29 47 93 68 55 72 46
31 27   28   78   49 72   59   50