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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 50050900 RIO GRANDE DE LOIZA AT QUEBRADA ARENAS, PR


San Lorenzo Municipio, Puerto Rico
Hydrologic Unit Code 21010005
Latitude  18°07'12", Longitude  65°59'19" NAD27
Drainage area 6  square miles
Gage datum 640 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 1989-10-01 -> 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 16 15 12 17 31 22 35 27 36 27 34 31
2 15 15 10 20 33 49 40 33 21 37 31 33
3 16 13 10 13 17 30 29 50 36 51 30 29
4 17 12 12 11 23 50 21 26 36 34 30 23
5 47 24 21 11 31 42 23 24 46 42 40 24
6 37 35 13 9.4 20 30 38 21 44 36 40 45
7 25 32 28 11 32 31 25 22 57 40 71 25
8 22 16 18 25 34 21 30 30 52 31 95 21
9 17 14 14 10 31 21 38 32 35 35 45 21
10 20 12 11 10 28 24 33 32 132 65 82 20
11 22 13 19 19 44 23 48 26 39 66 70 42
12 17 13 11 19 35 34 24 20 29 42 85 28
13 20 16 10 14 50 24 34 25 46 60 74 21
14 27 16 11 20 47 28 43 39 35 49 74 21
15 27 13 12 14 23 33 30 28 75 49 53 23
16 18 14 13 15 24 32 37 39 56 43 53 23
17 17 14 11 37 73 29 28 38 56 33 55 25
18 22 12 13 26 58 29 40 39 92 47 57 20
19 16 21 11 25 31 56 38 36 75 29 31 19
20 19 28 17 44 52 30 37 44 98 40 29 31
21 14 20 14 27 47 36 46 30 233 37 28 17
22 20 13 18 28 38 37 43 120 212 63 45 28
23 16 12 25 31 39 33 33 121 58 49 43 18
24 13 17 11 31 39 31 28 84 40 35 45 22
25 14 18 13 12 30 19 25 63 31 47 26 39
26 15 14 11 14 28 29 23 37 28 60 23 16
27 14 12 13 16 21 26 24 38 36 70 22 16
28 15 14 13 23 45 15 27 43 43 63 27 18
29 15 21 18 35 28 25 24 41 32 43 26 26
30 12   35 23 58 30 62 26 32 42 30 20
31 12   33   38   51 28   37   18