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  • Notice - The USGS Water Resources Mission Area's priority is to maintain the safety and well-being of our communities, including providing critical situational awareness in times of flooding in all 50 U.S. states and additional territories. Our hydrologic monitoring stations continue to send data in near real-time to NWISWeb, and we are continuing critical water monitoring activities to protect life and property on a case-by-case basis. The health and safety of the public and our employees are our highest priorities, and we continue to follow guidance from the White House, the CDC, and state and local authorities.

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Streamflow Measurements for the Nation


USGS 50059050 RIO GRANDE DE LOIZA BLW LOIZA DAMSITE, PR


Trujillo Alto Municipio, Puerto Rico
Hydrologic Unit Code 21010005
Latitude  18°20'32.17", Longitude  66°00'21.51" NAD27
Drainage area 209  square miles
Gage datum 49.2 feet above NGVD29
Output formats
HTML table with channel data
HTML table without channel data
Tab-separated data with channel data
Tab-separated data without channel data
Graph of data
Reselect output format
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
 
2652020-03-10 09:31:30ASTYesJSB/JMCUSGS8.642.83-0.020.66FairClearNONE
2642019-12-11 11:41:30ASTYesJSB/CDNUSGS1.522.410.000.43FairClearNONE
2632019-10-10 09:45:30ASTYesJSB/LVAUSGS3.152.510.000.50GoodClearNONE
2622019-10-10 09:00:30ASTYesJSB/LVAUSGS2.952.510.000.50GoodClearNONE
2612019-08-29 11:02:30ASTYesJSB/AAMUSGS3.902.610.051.50PoorClearNONE
2602019-06-04 13:55ASTYesJSB/LVA/ESLUSGS2.092.520.000.56PoorClearNONE
2592019-06-04 13:02:30ASTYesJSB/LVA/ESLUSGS2.372.520.000.33PoorClearNONE
2582019-04-09 08:07ASTNo
2572019-01-30 11:42:30ASTYesMRTUSGS2.302.59 0.63FairClearNONE
2562019-01-30 10:31:30ASTYesMRTUSGS2.322.59 0.86FairClearNONE
2552018-12-06 12:58ASTYesIMR/ BLVUSGS3.452.700.000.50PoorClearNONE
2542018-10-05 11:38ASTYesIMR/BLVUSGS3.012.750.011.00PoorClearNONE
2532018-08-13 13:00ASTYesIMR/BLVUSGS1.532.750.000.50PoorClearNONE
2522018-06-12 11:41ASTYesIMR/BLVUSGS2.432.840.000.50PoorClearNONE
2512018-03-21 15:30ASTYesDARUSGS4.023.020.000.50GoodClearNONE
2502017-11-27 13:27ASTYesBLV/IMRUSGS4.063.440.000.50GoodFillControlChangedNONE
2492017-11-27 11:55:30ASTYesBLV/IMRUSGS4.393.440.000.50FairFillControlChangedNONE
2018C2017-09-20 11:59:30ASTNo
2018I2017-09-20 10:45ASTNo
2018H2017-09-20 10:45ASTNo
2018G2017-09-20 10:15ASTNo
2018F2017-09-20 09:45ASTNo
2018E2017-09-20 09:15ASTNo
2018D2017-09-20 08:45ASTNo
2018B2017-09-20 07:45ASTNo
2018A2017-09-20 07:15ASTNo
2482017-08-25 09:50ASTYesDAR/BLVUSGS3.462.800.000.50GoodClearNONE
2472017-06-14 12:00ASTYesDAR/BLVUSGS6.242.92-0.010.50GoodClearNONE
2462017-05-05 11:02:30ASTYesDAR/BLVUSGS10707.590.000.25FairUnknownNONE
2452017-02-23 11:45ASTYesDAR/BLVUSGS1.682.800.000.50GoodVegetationLightNONE
2442016-12-05 11:38:30ASTYesCM/LVAUSGS3.252.900.000.60GoodClearNONE
2432016-10-11 16:12:30ASTYesCM/DRUSGS8.532.87-0.020.50GoodClearNONE
2422016-08-12 10:48ASTYesCM/DRUSGS3.652.730.000.50GoodClearNONE
2412016-06-02 13:40ASTYesDR/CDMUSGS10307.40 0.30FairUnspecifedNONE
2402016-06-02 10:50ASTYesDR/CDMUSGS9987.390.000.30FairUnspecifedNONE
2392016-04-14 11:14ASTYesDR/CDMUSGS1.302.580.000.50GoodClearNONE
2382016-02-04 12:47:30ASTYesDR/CMUSGS0.522.580.000.60GoodVegetationLightNONE
2372015-12-08 11:03:30ASTYesWJM/DRUSGS6.532.950.020.50GoodClearNONE
2362015-10-28 09:55:30ASTYesDR/WMUSGS2.242.840.010.50FairDebrisLightNONE
2352015-08-20 13:07:30ASTYesFR/DRUSGS0.192.550.000.80GoodClearNONE
2342015-06-01 13:27:30ASTYesDR/WJMUSGS0.352.670.000.60FairVegetationLightNONE
2332015-03-24 11:00ASTYesDRUSGS0.622.720.000.50GoodVegetationHeavyNONE
2322015-01-28 09:40:30ASTYesMQUSGS1.562.670.00 FairVegetationModerateNONE
2312014-11-18 14:17:30ASTYesDR/MQUSGS13.52.96-0.040.50FairClearNONE
2302014-09-11 13:20ASTYesMQUSGS5.172.700.000.30GoodDebrisLightNONE
2292014-07-09 10:32:30ASTYesDR/MQUSGS0.632.660.00 PoorClearNONE
2282014-04-03 08:50ASTYesDR/MQUSGS1.272.690.000.70PoorVegetationLightNONE
2272014-01-23 10:00ASTYesDR/MQUSGS2.862.670.000.50GoodClearNONE
2262013-11-07 09:50ASTYesDR/MQUSGS3.972.700.000.50FairClearNONE
2252013-08-28 08:35ASTYesDR/JRSUSGS8.972.89-0.020.50GoodClearNONE
2242013-06-06 12:35ASTYesDR/GAUSGS1.322.840.000.50PoorClearNONE
2232013-01-14 09:38ASTYesDR/YMUSGS2.702.890.00 FairClearNONE
2222012-11-30 09:27:30ASTYesDR/YMUSGS3.732.930.00 FairClearNONE
2212012-10-17 09:45ASTYesDR/YMUSGS2.402.920.000.50GoodClearNONE
2202012-08-20 11:40ASTYesYM/DRUSGS1.522.880.000.80GoodClearNONE
2192012-07-09 09:37:30ASTYesYM/DRUSGS3.783.000.000.40GoodClearNONE
2182012-04-25 10:00ASTYesYM/DRUSGS3.662.940.000.50FairClearNONE
2172012-01-30 10:12:30ASTYesYM/DRUSGS3.062.950.000.40FairClearNONE
2162011-12-01 10:45ASTYesYM/DRUSGS3.442.970.000.50PoorDebrisLightNONE
2152011-10-19 09:57:30ASTNo
2142011-08-15 10:05ASTYesDRYMUSGS3504.760.000.80FairClearNONE
2132011-07-07 10:12:30ASTYesYM/AF/MQUSGS3044.860.000.80GoodClearNONE
2011A2011-05-21 -- ----YesJMRUSGS7230035.57 Unspecified NONE
2122011-03-09 10:40ASTYesYMM/JRSUSGS1.112.790.000.70FairUnspecifedNONE
2112010-11-04 10:58:30ASTYesYMM/JAOUSGS1.432.880.000.60PoorUnspecifedNONE
2102010-03-04 09:10ASTYesYM/JAOUSGS1.642.850.000.40PoorClearNONE
2092009-12-23 09:44:30ASTYesYMM/JAOUSGS0.682.850.000.70PoorClearNONE
2082009-11-03 09:17:20ASTYesYMUSGS0.992.880.000.40PoorClearNONE
2072009-07-08 10:14:31ASTYesYMUSGS1.532.990.000.30PoorClearNONE
2062009-06-05 10:20ASTYesDH/YMUSGS3135.450.001.00GoodClearNONE
2052009-02-24 10:08:54ASTYesYM/JOUSGS0.722.990.000.40PoorClearNONE
2042008-12-30 09:04:54ASTYesYM/ESUSGS5.203.230.000.80PoorUnspecifedNONE
2032008-08-26 11:12:36ASTYesESUSGS2.533.15-0.060.90PoorClearNONE
2022008-05-19 10:25ASTYesES/DRUSGS0.423.050.000.50PoorClearNONE
2012008-02-26 09:30ASTYesESUSGS1.023.110.00 Poor NONE
2002007-11-01 09:18ASTYesJRS/ESUSGS2765.380.00 Excellent NONE
1992007-07-10 16:10ASTYesESUSGS0.422.990.010.50Poor NONE
1982007-02-23 15:05ASTYesESUSGS0.703.030.000.50Poor NONE
1972006-11-21 10:15ASTYesESUSGS0.983.060.000.40Poor NONE
1962006-07-31 13:32ASTYesESUSGS3235.250.000.70Fair NONE
1952006-06-02 09:55ASTYesES /AOUSGS0.863.100.000.70FairClearNONE
1942006-04-20 10:05ASTYesESUSGS0.933.130.000.70Fair NONE
1932006-01-31 12:10ASTYesESUSGS1.743.220.010.50Fair NONE
1922005-12-09 10:25ASTYesESUSGS2.053.270.020.60Poor NONE
1912005-08-17 13:50ASTYesESUSGS2625.180.000.30Poor NONE
1902005-06-13 11:50ASTYesES /RPUSGS1.593.32-0.010.30Poor NONE
1892005-05-10 14:20ASTYesESUSGS0.863.060.000.40Poor NONE
1882005-03-17 11:00ASTYesESUSGS0.603.080.000.50Poor NONE
1872005-01-27 11:50ASTYesESUSGS3.863.26-0.010.60Good NONE
1862004-12-09 12:45ASTYesESUSGS2.803.23-0.010.50Poor NONE
1852004-10-18 09:50ASTYesESUSGS1.533.200.000.70FairClearNONE
1842004-08-19 08:55ASTYesESUSGS1.153.19 GoodClearNONE
1832004-06-21 09:55ASTYesESUSGS1.903.28-0.010.60PoorClearNONE
1822004-04-21 10:20ASTYesESUSGS2.733.34-0.010.50Poor NONE
1812004-03-09 09:20ASTYesESUSGS1.873.310.000.70Poor NONE
1802004-01-23 10:30ASTYesESUSGS2.413.35-0.010.60Poor NONE
1792003-11-26 15:00ASTYesESUSGS1034.630.080.70GoodUnspecifedNONE
1782003-09-17 09:50ASTYesESUSGS2.323.49-0.010.40Fair NONE
1772003-08-11 09:05ASTYesESUSGS0.813.480.000.30Poor NONE
1762003-06-26 08:05ASTYesESUSGS1.283.550.000.40Fair NONE
1752003-05-13 09:42ASTYesESUSGS1.223.600.000.60Fair NONE
1742003-03-17 09:20ASTYesESUSGS0.623.750.000.50Fair NONE
1732003-02-24 11:18ASTYesESUSGS1.343.68-0.010.50Fair NONE
1722003-01-31 14:50ASTYesESUSGS26.54.11-0.040.50FairClearNONE
1712002-11-20 06:37ASTYesRRMUSGS1.833.630.000.50FairClearNONE
1702002-10-22 06:33ASTYesRRMUSGS4.303.720.000.40FairClearNONE
1692002-09-23 08:35ASTYesCNUSGS4.693.740.000.40Fair NONE
1682002-08-29 08:20ASTYesJM /CNUSGS2.173.72-0.011.10Fair NONE
1672002-07-15 06:20ASTYesRRMUSGS4.853.760.010.30Fair NONE
1662002-05-15 10:12ASTYesJARUSGS3.883.840.000.60Good NONE
1652002-04-10 08:02ASTYesJARUSGS3.023.860.000.40Fair NONE
1642002-03-26 09:43ASTYesJARUSGS3.433.900.000.50Fair NONE
1632002-02-25 11:49ASTYesJARUSGS4.643.880.010.40Fair NONE
1622002-01-24 10:24ASTYesRRMUSGS25.24.16-0.030.50Fair NONE
1612001-12-21 11:32ASTYesJARUSGS39.34.33-0.140.40Fair NONE
1602001-11-20 08:32ASTYesJARUSGS77.44.620.000.50Fair NONE
1592001-09-27 08:06ASTYesJARUSGS13.44.340.010.50Good NONE
1582001-08-29 08:30ASTYesJARUSGS17.04.420.000.50Fair NONE
1572001-07-13 09:56ASTYesJARUSGS2.854.280.000.40Fair NONE
1562001-06-26 07:40ASTYesJARUSGS4.584.300.000.50Fair NONE
1552001-05-17 12:05ASTYesJARUSGS8.674.400.000.40Fair NONE
1542001-04-17 12:06ASTYesJARUSGS2.514.350.000.40Good NONE
1532001-03-23 06:46ASTYesJARUSGS2.474.360.000.60Fair NONE
1522001-02-21 10:47ASTYesJARUSGS7.474.440.010.40Fair NONE
1512001-01-30 08:46ASTYesCDL/JARUSGS11.44.480.000.50Fair NONE
1502000-12-19 10:43ASTYesJAR/JTUSGS19.64.65-0.060.50Fair NONE
1492000-11-29 10:00ASTYesJARUSGS28.64.690.020.40Fair NONE
1482000-09-08 07:44ASTYesJARUSGS33.54.840.010.60Fair NONE
1472000-08-16 08:45ASTYesJARUSGS4.494.120.000.50Poor NONE
1462000-07-18 12:42ASTYesICGUSGS5.584.100.000.60FairClearNONE
1452000-06-22 08:51ASTYesJAR/ICGUSGS9.314.140.000.50Fair NONE
1442000-05-18 09:36ASTYesJARUSGS7.844.160.000.50Poor NONE
1432000-04-11 09:26ASTYesWGG/ESUSGS5.394.110.000.80Fair NONE
1422000-03-17 10:23ASTYesICUSGS10.74.150.000.60Poor NONE
1411999-10-25 09:45ASTYesJARUSGS17.84.22-0.020.70Fair NONE
1401999-09-15 09:23ASTYesJARUSGS9.054.200.000.60Fair NONE
1391999-08-18 08:32ASTYesJARUSGS7.234.270.000.60FairClearNONE
1381999-07-28 07:42ASTYesJARUSGS5.764.290.000.80FairClearNONE
1371999-06-28 09:20ASTYesJARUSGS58.04.77-0.020.50Fair NONE
1361999-05-13 06:57ASTYesWGGUSGS3.524.240.000.50Fair NONE
1351999-04-08 11:20ASTYesJARUSGS9.584.370.020.40Fair NONE
1341999-03-26 07:03ASTYesRRMUSGS9.544.350.000.50FairClearNONE
1331999-02-05 10:10ASTYesJARUSGS24.74.580.000.40Fair NONE
1321998-12-16 10:04ASTYesAGF/JATUSGS52.84.98-0.010.40Fair NONE
1311998-10-20 10:57ASTYesCENUSGS71.75.58-0.040.40Unspecified NONE
1301998-07-16 10:07ASTYesCENUSGS1.373.880.000.40FairClearNONE
1291998-06-24 07:50ASTYesCENUSGS1.233.940.000.30Unspecified NONE
1281998-05-22 07:55ASTYesCENUSGS16.04.240.000.40Unspecified NONE
1271998-04-28 09:01ASTYesCENUSGS4.544.200.000.40PoorClearNONE
1261998-03-18 07:03ASTYesJARUSGS6.254.440.000.70FairClearNONE
1251998-02-23 07:48ASTYesRRMUSGS4.124.300.000.30FairClearNONE
1241998-01-29 07:43ASTYesRRMUSGS3.544.120.000.40PoorClearNONE
1231997-12-22 08:46ASTYesPJGUSGS8.834.240.000.50FairClearNONE
1221997-11-21 06:46ASTYesPJGUSGS8.114.200.000.50FairClearNONE
1211997-10-17 07:26ASTYesPJGUSGS26.24.42-0.020.50FairClearNONE
1201997-09-18 09:56ASTYesRRM/PJGUSGS9.044.250.000.50FairClearNONE
1191997-09-12 08:42ASTYesPJGUSGS9.084.150.000.50FairClearNONE
1181997-08-12 09:22ASTYesPJGUSGS3.123.730.000.50FairClearNONE
1171997-07-16 09:30ASTYesPJGUSGS2.763.66-0.010.50FairClearNONE
1161997-06-20 07:16ASTYesPJGUSGS3.143.690.000.50FairClearNONE
1151997-05-12 08:53ASTYesPJGUSGS3.553.740.000.50FairClearNONE
1141997-04-16 10:42ASTYesPJGUSGS4.283.800.000.50FairClearNONE
1131997-03-26 08:33ASTYesPJGUSGS4.913.890.000.50FairClearNONE
1121997-02-11 07:56ASTYesPJGUSGS5.383.970.000.50FairClearNONE
1111997-01-17 10:56ASTYesPJGUSGS5.193.960.000.50FairClearNONE
1101996-12-12 10:42ASTYesPJGUSGS6.464.030.000.50FairClearNONE
1091996-11-26 10:14ASTYesPJGUSGS5.953.960.000.50FairClearNONE
1081996-10-18 10:56ASTYesPJGUSGS4.373.730.000.50FairClearNONE
1071996-08-26 06:57ASTYesPJGUSGS3.973.300.000.40FairClearNONE
1061996-07-18 08:03ASTYesPJGUSGS4.063.31-0.040.50FairClearNONE
1051996-06-07 11:47ASTYesPJGUSGS1.213.060.000.50GoodClearNONE
1041996-05-08 10:24ASTYesPJGUSGS3.633.110.000.50FairClearNONE
1031996-04-15 08:15ASTYesPJGUSGS5.333.360.000.50FairClearNONE
1021996-03-06 11:42ASTYesPJGUSGS5.353.360.000.50FairClearNONE
1011996-02-21 07:46ASTYesPJGUSGS5.023.370.000.50FairClearNONE
1001995-12-07 07:31ASTYesPJGUSGS4.293.340.030.50FairClearNONE
991995-11-22 10:15ASTYesPJGUSGS4.613.360.000.50FairClearNONE
981995-10-17 11:27ASTYesPJGUSGS5.043.360.080.50FairClearNONE
971995-09-27 07:56ASTYesPJGUSGS3.943.290.000.50GoodClearNONE
961995-07-21 08:01ASTYesPJGUSGS0.902.950.000.50FairClearNONE
951995-06-26 08:46ASTYesPJGUSGS0.922.960.000.50FairClearNONE
941995-05-22 10:31ASTYesPJGUSGS0.892.870.000.50FairClearNONE
931995-04-12 10:51ASTYesPJGUSGS1.072.990.000.50GoodClearNONE
921995-03-17 08:42ASTYesPJGUSGS1.113.020.000.50GoodClearNONE
911995-02-17 08:39ASTYesPJGUSGS1.022.980.000.40GoodClearNONE
901995-01-11 08:42ASTYesPJGUSGS3.803.180.000.50FairClearNONE
891994-12-22 09:12ASTYesPJGUSGS2.643.170.000.30FairClearNONE
881994-10-17 13:00ASTYesCCR/RPUSGS2.803.100.000.40UnspecifiedDebrisLightNONE
871994-07-26 13:38ASTYesCCRUSGS1.123.050.000.50UnspecifiedClearNONE
861994-06-21 13:06ASTYesCCRUSGS1.722.950.000.50UnspecifiedClearNONE
851994-05-23 14:16ASTYesCCRUSGS1.993.040.000.50UnspecifiedClearNONE
841994-04-25 13:18ASTYesCCRUSGS3.043.200.000.50UnspecifiedClearNONE
831994-03-24 12:23ASTYesCCRUSGS4.143.290.000.60UnspecifiedClearNONE
821994-02-23 12:41ASTYesCCRUSGS5.503.330.000.60UnspecifiedClearNONE
811994-01-19 11:32ASTYesCCRUSGS7.583.350.000.60UnspecifiedClearNONE
801993-12-07 10:52ASTYesccrUSGS6.613.350.000.60UnspecifiedClearNONE
791993-10-25 13:36ASTYesCCRUSGS7.483.290.000.50Fair NONE
781993-09-21 09:48ASTYesCCRUSGS5.753.300.000.60Fair NONE
771993-07-29 10:43ASTYesCCR/CFUSGS10.83.300.000.50Fair NONE
761993-06-28 13:01ASTYesCCRUSGS3.893.290.000.50Fair NONE
751993-05-28 09:58ASTYesCCRUSGS14.93.360.000.50Fair NONE
741993-04-26 13:32ASTYesCCRUSGS3.923.270.000.70Good NONE
731993-03-31 12:54ASTYesCCRUSGS5.943.260.000.60Good NONE
721993-02-11 13:15ASTYesCCRUSGS9.583.250.000.60Good NONE
711993-01-15 11:00ASTYesCCRUSGS5.853.270.000.70Good NONE
701992-12-15 12:44ASTYesCCRUSGS12.43.190.000.60Good NONE
691992-11-19 12:21ASTYesCCRUSGS6.743.100.000.50Good NONE
681992-10-06 13:00ASTYesCCRUSGS9.603.080.000.60Good NONE
671992-09-17 14:53ASTYesCCRUSGS14.13.18-0.020.60Fair NONE
661992-08-21 14:22ASTYesCCRUSGS11.33.150.000.60Good NONE
651992-07-08 11:05ASTYesccrUSGS11.63.240.010.80Good NONE
641992-06-10 15:28ASTYesCCRUSGS13.43.400.010.60Good NONE
631992-04-29 11:18ASTYesAVUSGS3.263.15 Fair NONE
621992-03-17 14:09ASTYesCCRUSGS11.33.69 Good NONE
611992-02-13 10:58ASTYesCCRUSGS10.43.680.000.40Fair NONE
601992-01-15 13:15ASTYesCCRUSGS7.333.42-0.010.60Good NONE
591991-12-16 14:15ASTYesCCRUSGS9.403.200.010.60Good NONE
581991-11-20 12:52ASTYesCCRUSGS5.263.07 Good NONE
571991-10-15 -- ----YesCCRUSGS7.752.740.000.50Fair NONE
561991-09-19 -- ----YesCCRUSGS7.452.830.000.60Good NONE
551991-08-14 -- ----YesCCRUSGS4.992.850.000.50Fair NONE
541991-07-19 -- ----YesAGFUSGS7.092.940.000.50Fair NONE
531991-06-26 -- ----YesAGF/RVUSGS5.843.080.000.50Fair NONE
521991-03-19 -- ----YesPGUSGS13.63.110.000.70Unspecified NONE
511991-02-21 -- ----YesAGF/PGUSGS10.33.120.000.60Fair NONE
501991-01-29 -- ----YesAGFUSGS7.963.160.000.50Fair NONE
491990-12-19 -- ----YesAGF/JARUSGS9.433.100.000.80Fair NONE
481990-11-27 -- ----YesAGFUSGS8.423.140.000.50Fair NONE
471990-10-26 -- ----YesAGF/METUSGS15.13.140.000.70Good NONE
461990-09-06 -- ----YesAGFUSGS2.952.940.000.60Poor NONE