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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 -> 2020-09-30)

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 42 37 47 31 67 51 27 33 66 45 69 53
2 37 29 42 28 65 52 40 49 55 72 61 67
3 41 29 34 50 39 56 30 86 52 56 74 75
4 32 35 29 38 51 55 35 40 51 52 103 62
5 58 57 33 48 36 46 42 57 62 48 67 61
6 61 33 31 34 40 34 38 43 117 57 50 47
7 52 30 36 29 49 35 82 37 70 53 101 45
8 37 28 25 32 93 36 35 35 45 92 121 49
9 45 29 29 29 95 52 50 47 55 57 104 52
10 63 26 30 34 84 72 31 52 195 84 71 89
11 49 29 35 38 60 36 71 44 110 66 57 81
12 41 28 39 48 64 40 51 54 72 55 73 50
13 45 27 39 37 54 33 69 42 51 44 129 40
14 64 36 32 44 64 38 60 53 71 85 69 59
15 77 28 25 65 66 44 43 59 94 69 108 54
16 44 32 25 49 41 36 81 67 92 82 78 66
17 40 28 23 61 38 34 42 80 66 66 75 40
18 42 44 26 55 44 35 46 60 119 60 112 43
19 42 38 33 48 34 63 39 47 56 56 69 33
20 51 42 33 57 78 40 67 150 194 59 64 40
21 42 41 31 62 80 42 71 99 136 70 84 40
22 45 31 32 59 40 33 74 111 152 100 87 51
23 53 40 47 70 110 37 56 209 104 65 57 44
24 41 32 43 58 51 56 48 109 99 61 58 43
25 45 49 34 53 66 30 57 73 70 63 52 36
26 32 35 35 56 66 28 39 44 88 57 50 55
27 32 41 28 54 86 42 62 73 61 77 50 46
28 39 35 44 41 44 36 62 52 52 98 58 57
29 37 28 77 80 55 39 57 82 66 60 50 63
30 29   45 79 48 29 52 91 68 53 70 46
31 26   28   74   51 71   57   49