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Streamflow Measurements for the Nation


USGS 50049000 RIO PIEDRAS AT RIO PIEDRAS, PR


San Juan Municipio, Puerto Rico
Hydrologic Unit Code 21010005
Latitude  18°23'48", Longitude  66°03'24" NAD27
Drainage area 12.5  square miles
Gage datum 164.1 feet above NGVD29
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Meas.
Number
  Date       Time Time
Datum
Measurement
Used?
  Who Measuring
Agency
Stream
flow
(ft3/s)
Gage
Height
(ft)
GH
Change
(ft)
Meas.
Duration
(hr)
Meas.
Rated
  Control Flow
Adjust.
Code
 
Channel
Number
Channel
Name
Meas.
type
 
Stream
flow
method
 
Velocity
method
 
Channel
flow
(ft3/s)
Channel
width
(ft)
Channel
area
(ft2)
Channel
vel.
(ft/s)
Channel
stability
 
Channel
material
 
Channel
evenness
 
Long.
vel.
desc.
 
Horz.
vel.
desc.
 
Vert.
vel.
desc.
 
Channel
loc.
code
 
Channel
loc.
dist.(ft)
1851993-10-04 -- ----YesPGUSGS8.261.810.000.50Good NONE1Imported Channel 1WADEunspeunkno8.269.006.211.33UNSPUNSPUNSPunknUNSPUNSPUNSP
1841993-09-03 -- ----YesPGUSGS9.471.840.000.50Good NONE1Imported Channel 1WADEunspeunkno9.4710.06.751.40UNSPUNSPUNSPunknUNSPUNSPUNSP
1831993-07-20 -- ----YesPGUSGS10.31.890.000.50Good NONE1Imported Channel 1WADEunspeunkno10.311.07.701.34UNSPUNSPUNSPunknUNSPUNSPUNSP
1821993-06-25 -- ----YesPGUSGS10.21.860.000.50Fair NONE1Imported Channel 1WADEunspeunkno10.211.07.601.35UNSPUNSPUNSPunknUNSPUNSPUNSP
1811993-05-10 -- ----YesPGUSGS13.21.960.000.50Good NONE1Imported Channel 1WADEunspeunkno13.222.013.90.95UNSPUNSPUNSPunknUNSPUNSPUNSP
1801993-04-27 -- ----YesPGUSGS9.721.84-0.010.50Good NONE1Imported Channel 1WADEunspeunkno9.7210.57.371.32UNSPUNSPUNSPunknUNSPUNSPUNSP
1791993-03-12 -- ----YesPGUSGS9.881.880.010.50Good NONE1Imported Channel 1WADEunspeunkno9.8819.011.10.89UNSPUNSPUNSPunknUNSPUNSPUNSP
1781993-02-18 -- ----YesPGUSGS11.61.930.000.50Good NONE1Imported Channel 1WADEunspeunkno11.620.012.50.92UNSPUNSPUNSPunknUNSPUNSPUNSP
1771993-01-15 07:36ASTYesPGUSGS19.42.05-0.010.60Good NONE1Imported Channel 1WADEunspeunkno19.422.518.11.08UNSPUNSPUNSPunknUNSPUNSPUNSP
1761992-12-11 -- ----YesPGUSGS11.61.94-0.010.60Good NONE1Imported Channel 1WADEunspeunkno11.620.012.40.94UNSPUNSPUNSPunknUNSPUNSPUNSP
1751992-11-16 -- ----YesPGUSGS30.51.89-0.140.40Fair NONE1Imported Channel 1WADEunspeunkno30.522.024.41.25UNSPUNSPUNSPunknUNSPUNSPUNSP
1741992-10-13 -- ----YesPGUSGS6.471.700.000.50Fair NONE1Imported Channel 1WADEunspeunkno6.4716.08.480.76UNSPUNSPUNSPunknUNSPUNSPUNSP
1731992-09-18 -- ----YesPGUSGS8.401.81-0.020.60Good NONE1Imported Channel 1WADEunspeunkno8.4017.09.890.85UNSPUNSPUNSPunknUNSPUNSPUNSP
1721992-08-27 -- ----YesPGUSGS8.551.81-0.020.60Good NONE1Imported Channel 1WADEunspeunkno8.5518.010.20.84UNSPUNSPUNSPunknUNSPUNSPUNSP
1711992-07-09 -- ----YesJATUSGS18.81.76-0.020.50Fair NONE1Imported Channel 1WADEunspeunkno18.818.012.51.50UNSPUNSPUNSPunknUNSPUNSPUNSP
1701992-06-19 -- ----YesJATUSGS9.151.640.000.60Fair NONE1Imported Channel 1WADEunspeunkno9.1521.015.10.61UNSPUNSPUNSPunknUNSPUNSPUNSP
1691992-05-29 -- ----YesJATUSGS18.01.840.000.50Good NONE1Imported Channel 1WADEunspeunkno18.019.013.11.38UNSPUNSPUNSPunknUNSPUNSPUNSP
1681992-01-03 -- ----YesJAT/PJGUSGS6.511.70-0.010.60Fair NONE1Imported Channel 1WADEunspeunkno6.5115.08.430.77UNSPUNSPUNSPunknUNSPUNSPUNSP
1671991-11-05 -- ----YesJAT/PJGUSGS10.31.770.000.40Unspecified NONE1Imported Channel 1UNSPother 10.3 UNSPUNSPUNSPunknUNSPUNSPUNSP
1661991-09-12 -- ----YesPGUSGS7.071.740.000.60Fair NONE1Imported Channel 1WADEunspeunkno7.0716.08.780.80UNSPUNSPUNSPunknUNSPUNSPUNSP
1651991-08-16 -- ----YesAF /PGUSGS6.721.720.000.30Fair NONE1Imported Channel 1WADEunspeunkno6.7216.08.540.79UNSPUNSPUNSPunknUNSPUNSPUNSP
1641991-07-26 -- ----YesEMUSGS16.31.760.000.30Fair NONE1Imported Channel 1UNSPother 16.3 UNSPUNSPUNSPunknUNSPUNSPUNSP
1631991-05-22 -- ----YesPGUSGS12.21.830.000.60Fair NONE1Imported Channel 1WADEunspeunkno12.217.09.921.23UNSPUNSPUNSPunknUNSPUNSPUNSP
1621991-04-25 -- ----YesFH /PGUSGS11.61.740.000.60Fair NONE1Imported Channel 1WADEunspeunkno11.616.09.171.26UNSPUNSPUNSPunknUNSPUNSPUNSP
1611991-03-20 -- ----YesPGUSGS10.71.810.000.50Fair NONE1Imported Channel 1WADEunspeunkno10.716.08.561.24UNSPUNSPUNSPunknUNSPUNSPUNSP
1601991-02-14 -- ----YesEM /JRUSGS13.11.840.020.80Fair NONE1Imported Channel 1WADEunspeunkno13.118.010.81.22UNSPUNSPUNSPunknUNSPUNSPUNSP
1591991-01-24 -- ----YesEM /PGUSGS12.41.910.000.80Fair NONE1Imported Channel 1WADEunspeunkno12.424.08.911.39UNSPUNSPUNSPunknUNSPUNSPUNSP
1581990-12-26 -- ----YesEM /PGUSGS14.01.910.000.60Fair NONE1Imported Channel 1WADEunspeunkno14.019.010.81.29UNSPUNSPUNSPunknUNSPUNSPUNSP
1571990-11-16 -- ----YesemUSGS12.01.880.000.50Fair NONE1Imported Channel 1WADEunspeunkno12.018.59.331.29UNSPUNSPUNSPunknUNSPUNSPUNSP
1561990-10-05 -- ----YesEMUSGS33.02.040.080.50Good NONE1Imported Channel 1WADEunspeunkno33.023.023.41.41UNSPUNSPUNSPunknUNSPUNSPUNSP
1551990-09-21 -- ----YesEMUSGS9.881.800.000.50Good NONE1Imported Channel 1WADEunspeunkno9.8817.08.011.23UNSPUNSPUNSPunknUNSPUNSPUNSP
1541990-08-27 -- ----YesEMUSGS9.151.800.000.50Fair NONE1Imported Channel 1WADEunspeunkno9.1522.09.410.97UNSPUNSPUNSPunknUNSPUNSPUNSP
1531990-07-11 -- ----YesEM /JRSUSGS8.821.790.000.60Fair NONE1Imported Channel 1WADEunspeunkno8.8221.59.460.93UNSPUNSPUNSPunknUNSPUNSPUNSP
1521990-06-12 -- ----YesMTUSGS9.671.740.000.50Fair NONE1Imported Channel 1WADEunspeunkno9.6717.012.00.80UNSPUNSPUNSPunknUNSPUNSPUNSP
1511990-05-11 -- ----YesEMTUSGS16.31.90-0.020.50Fair NONE1Imported Channel 1WADEunspeunkno16.319.010.81.50UNSPUNSPUNSPunknUNSPUNSPUNSP
1501990-04-18 -- ----YesPAT/ MTUSGS14.01.500.000.50Unspecified NONE1Imported Channel 1WADEunspeunkno14.027.014.50.96UNSPUNSPUNSPunknUNSPUNSPUNSP
1491990-04-04 -- ----YesEMT/WRUSGS9.481.580.000.90Fair NONE1Imported Channel 1WADEunspeunkno9.4821.011.60.82UNSPUNSPUNSPunknUNSPUNSPUNSP
1481990-03-09 10:59ASTYesEMTUSGS97.72.26-0.170.50Good NONE1Imported Channel 1WADEunspeunkno97.729.035.82.73UNSPUNSPUNSPunknUNSPUNSPUNSP
1471990-02-02 08:15ASTYesEMTUSGS10.51.700.000.50Fair NONE1Imported Channel 1WADEunspeunkno10.521.011.90.88UNSPUNSPUNSPunknUNSPUNSPUNSP
1461990-01-05 10:54ASTYesEMTUSGS19.11.790.000.50Fair NONE1Imported Channel 1WADEunspeunkno19.121.011.41.68UNSPUNSPUNSPunknUNSPUNSPUNSP
1451989-12-14 09:00ASTYesEMTUSGS16.81.760.000.70Good NONE1Imported Channel 1WADEunspeunkno16.826.023.00.73UNSPUNSPUNSPunknUNSPUNSPUNSP
1441989-12-07 08:05ASTYesCFSUSGS12.41.780.010.50Fair NONE1Imported Channel 1WADEunspeunkno12.423.020.30.61UNSPUNSPUNSPunknUNSPUNSPUNSP
1431989-11-20 09:16ASTYesEMTUSGS17.71.800.000.40Fair NONE1Imported Channel 1WADEunspeunkno17.726.023.00.77UNSPUNSPUNSPunknUNSPUNSPUNSP
1421989-10-19 -- ----YesCFAUSGS19.31.750.030.50Unspecified NONE1Imported Channel 1WADEunspeunkno19.323.023.50.82UNSPUNSPUNSPunknUNSPUNSPUNSP
1411989-09-28 -- ----YesCFA/AVUSGS31.62.17-0.020.80Fair NONE1Imported Channel 1WADEunspeunkno31.617.014.92.12UNSPUNSPUNSPunknUNSPUNSPUNSP
1401989-09-01 -- ----YesAVUSGS16.21.79-0.010.60Fair NONE1Imported Channel 1WADEunspeunkno16.214.512.41.31UNSPUNSPUNSPunknUNSPUNSPUNSP
1391989-08-17 -- ----YesAVUSGS1272.470.030.60Fair NONE1Imported Channel 1WADEunspeunkno12736.048.82.60UNSPUNSPUNSPunknUNSPUNSPUNSP
1381989-07-18 -- ----YesAVUSGS14.11.880.000.50Poor NONE1Imported Channel 1WADEunspeunkno14.112.010.81.30UNSPUNSPUNSPunknUNSPUNSPUNSP
1371989-06-27 -- ----YesAVUSGS8.981.500.000.50Fair NONE1Imported Channel 1WADEunspeunkno8.9818.013.00.69UNSPUNSPUNSPunknUNSPUNSPUNSP
1361989-06-14 -- ----YesAVUSGS13.91.400.000.90Fair NONE1Imported Channel 1WADEunspeunkno13.921.014.10.99UNSPUNSPUNSPunknUNSPUNSPUNSP
1351989-05-16 -- ----YesCFAUSGS7.830.950.000.50Fair NONE1Imported Channel 1WADEunspeunkno7.8314.07.501.04UNSPUNSPUNSPunknUNSPUNSPUNSP
1341989-04-17 -- ----YesAVUSGS9.010.970.000.80Fair NONE1Imported Channel 1WADEunspeunkno9.0121.08.951.00UNSPUNSPUNSPunknUNSPUNSPUNSP
1331989-03-15 15:25ASTYesAVUSGS14.01.090.000.60Good NONE1Imported Channel 1WADEunspeunkno14.023.026.80.52UNSPUNSPUNSPunknUNSPUNSPUNSP
1321989-02-16 09:46ASTYesCFA/AVUSGS29.31.230.000.60Fair NONE1Imported Channel 1WADEunspeunkno29.337.019.61.50UNSPUNSPUNSPunknUNSPUNSPUNSP
1311989-01-24 09:54ASTYesCFA/AVUSGS11.21.100.000.80Fair NONE1Imported Channel 1WADEunspeunkno11.219.020.10.56UNSPUNSPUNSPunknUNSPUNSPUNSP
1301988-12-14 10:50ASTYesCFA/AVUSGS13.01.16-0.010.60FairDebrisLightNONE1Imported Channel 1WADEunspeunkno13.021.020.80.62UNSPUNSPUNSPunknUNSPUNSPUNSP
1291988-11-21 10:45ASTYesCFA/AVUSGS45.31.250.020.80Good NONE1Imported Channel 1WADEunspeunkno45.336.023.41.93UNSPUNSPUNSPunknUNSPUNSPUNSP
1281988-10-19 11:00ASTYesCFA/AVUSGS17.31.120.000.70Fair NONE1Imported Channel 1WADEunspeunkno17.335.013.31.30UNSPUNSPUNSPunknUNSPUNSPUNSP
1271988-09-22 10:04ASTYesCFA/AVUSGS19.51.110.000.70Fair NONE1Imported Channel 1WADEunspeunkno19.543.021.90.89UNSPUNSPUNSPunknUNSPUNSPUNSP
1261988-09-09 -- ----YesEMT/METUSGS2252.090.090.50Fair NONE1Imported Channel 1WADEunspeunkno22549.080.72.78UNSPUNSPUNSPunknUNSPUNSPUNSP
1251988-09-09 -- ----YesEMT/METUSGS1721.81-0.310.70Fair NONE1Imported Channel 1WADEunspeunkno17248.068.22.52UNSPUNSPUNSPunknUNSPUNSPUNSP
1241988-08-24 15:55ASTYesGA /RTRUSGS724015.50-0.780.50Poor NONE1Imported Channel 1WADEunspeunkno724080.08948.10UNSPUNSPUNSPunknUNSPUNSPUNSP
1231988-08-24 13:40ASTYesGA /RTRUSGS7984.224.121.20Poor NONE1Imported Channel 1WADEunspeunkno79862.02253.54UNSPUNSPUNSPunknUNSPUNSPUNSP
1221988-08-19 10:30ASTYesCFA/AVUSGS12.40.970.000.70Fair NONE1Imported Channel 1WADEunspeunkno12.418.015.00.83UNSPUNSPUNSPunknUNSPUNSPUNSP
1211988-07-18 10:15ASTYesCFA/AVUSGS17.41.000.000.60Fair NONE1Imported Channel 1WADEunspeunkno17.418.016.61.05UNSPUNSPUNSPunknUNSPUNSPUNSP
1201988-05-26 10:10ASTYesCFA/AVUSGS13.01.040.000.60Fair NONE1Imported Channel 1WADEunspeunkno13.016.012.51.04UNSPUNSPUNSPunknUNSPUNSPUNSP
1191988-04-15 09:35ASTYesJRLUSGS1391.61-0.140.80Fair NONE1Imported Channel 1WADEunspeunkno13935.554.02.57UNSPUNSPUNSPunknUNSPUNSPUNSP
1181988-03-16 -- ----YesJRS/AGFUSGS13.40.990.000.70Unspecified NONE1Imported Channel 1WADEunspeunkno13.424.517.60.76UNSPUNSPUNSPunknUNSPUNSPUNSP
1171988-02-05 13:34ASTYesJRSUSGS33.51.120.000.60Fair NONE1Imported Channel 1WADEunspeunkno33.521.029.01.15UNSPUNSPUNSPunknUNSPUNSPUNSP
1161988-01-12 11:58ASTYesJMAUSGS19.21.07 Poor NONE1Imported Channel 1WADEunspeunkno19.232.021.90.88UNSPUNSPUNSPunknUNSPUNSPUNSP
1151987-12-11 15:05ASTYesJMAUSGS22.41.100.000.50Fair NONE1Imported Channel 1WADEunspeunkno22.421.523.10.96UNSPUNSPUNSPunknUNSPUNSPUNSP
1141987-11-10 15:00ASTYesJRSUSGS11.71.020.000.40Poor NONE1Imported Channel 1WADEunspeunkno11.721.022.10.53UNSPUNSPUNSPunknUNSPUNSPUNSP