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Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 50124700 RIO GUAYANILLA AT CENTRAL RUFINA, PR
Guayanilla Municipio, Puerto Rico
Hydrologic Unit Code 21010004
Latitude  18°00'50", Longitude  66°47'04" NAD27
Drainage area 24.3  square miles
Gage datum 13.1 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
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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)
302025-08-20 08:28:56ASTYesGNH/DSCUSGS49.3 Fair NONE1QW MainWADEQSCMMVADV49.336.527.71.78FIRMGRVLEVENSTDYEVENSTNDATGA0.00
282025-05-21 08:38:03ASTYesGNH/DSCUSGS28.1 Good NONE1QW mainWADEQSCMMVADV28.136.622.61.24FIRMGRVLEVENSTDYEVENSTNDATGA0.00
272025-02-05 08:26:52ASTYesGNH/DSCUSGS3.39 0.45Good NONE1QW MainWADEQSCMMVADV3.3922.816.40.21FIRMSANDEVENSTDYUNSPSTNDATGA0.00
262024-11-14 09:39:07ASTYesJOG/DSCUSGS131 0.90PoorClearNONE1MainWADEQSCMMVADV13149.351.32.56FIRMGRVLEVENPULSEVENNSTDUPST600.00
252024-08-26 15:34:46ASTYesGNH/DSCUSGS60.0 0.50Poor NONE1QW MainWADEQSCMMVADV60.053.633.41.79FIRMGRVLEVENSTDYEVENSTNDATGA0.00
242024-05-01 08:42:59ASTYesGNH/DSCUSGS7.76 0.50Poor NONE1QW MainWADEQSCMMVADV7.7627.516.10.48FIRMGRVLEVENSTDYEVENSTNDATGA0.00
232021-05-19 12:33:31ASTYesYMM/LVAUSGS0.59 Poor NONE150124700WADEQSCMMVADV0.595.502.820.21FIRMCBLSEVENSTDYEVENSTNDUPST0.00
222021-02-10 10:10:07ASTYesDSC/YMMUSGS0.97 Poor NONE1MainWADEQSCMMVADV0.976.001.780.55FIRMGRVLEVENSTDYEVENSTNDATGA0.00
212020-11-19 08:56:44ASTYesDSC/YMMUSGS8.85 Fair NONE1MainWADEQSCMMVADV8.8513.57.381.20FIRMGRVLEVENSTDYEVENSTNDATGA0.00
202020-08-27 11:20:20ASTYesDSC/YMMUSGS1.86 Poor NONE1MainWADEQSCMMVADV1.8614.04.370.43FIRMGRVLEVENSTDYEVENSTNDUPST95.00
192020-05-14 09:34:30ASTYesCWB/YMMUSGS0.71 Poor NONE1MainWADEQSCMMVADV0.7114.52.640.27FIRMCBLSEVENSTDYEVENSTNDUNSP
182020-02-19 17:04ASTYesHJE/LVAUSGS1.43 GoodClearNONE1MainWADEQSCMMVADV1.4324.018.70.08FIRMSANDEVENSTDYEVENSTNDUPST80.00
172019-11-14 08:11:30ASTYesYMM/LVAUSGS10.4 FairClearNONE150124700WADEQSCMMVADV10.420.08.451.23FIRMGRVLEVENSTDYEVENSTNDDNST0.00
2019-08-14 07:30ASTYesYMM/LVAUSGS0.00 Poor NONE1MainunknQSCMMunkno0.00 unknunknunknunknunknUNKNunkn
162018-11-15 08:26ASTYesYMM/LVAUSGS2.46 Fair NONE150124700WADEQSCMMVADV2.469.143.000.82SOFTGRVLUNEVSTDYUNEVSTNDUNSP
152018-05-15 13:15ASTYesYM/LVUSGS1.84 Poor NONE150124700OTHRother 1.84 FIRMsiltEVENSTDYEVENSTNDDNST10.00
142018-03-05 10:07ASTYesYM/LVUSGS5.41 FairClearNONE150124700WADEQSCMMVADV5.418.005.840.93FIRMsiltEVENSTDYUNSPUNKNDNST100.00
132017-11-13 13:52:30ASTYesYMM/JSBUSGS31.8 Fair NONE150124700WADEQSCMMVADV31.836.035.20.90FIRMGRVLEVENSTDYEVENSTNDUNSP
122017-08-16 08:37:30ASTYesLVA/YMMUSGS2.33 PoorVegetationHeavyNONE150124700WADEQSCMMVADV2.335.102.291.02FIRMCBLSUNEVunknEVENSTNDUNSP
112017-05-16 07:41:30ASTYesLVA/YMMUSGS16.6 GoodDebrisLightNONE150124700WADEQSCMMVADV16.618.014.51.14FIRMCBLSEVENunknEVENSTNDUNSP
102017-04-05 07:54ASTYesLVA/YMUSGS47.4 GoodClearNONE1mainWADEQSCMMVADV47.423.018.52.56FIRMCBLSUNEVunknEVENUNFMUNSP
92016-11-16 07:11ASTYesYM/IRUSGS68.0 Poor NONE1MainOTHRother 68.0 FIRMCBLSEVENunknEVENSTNDUNSP
82016-09-26 07:39:30ASTYesCDMUSGS18.7 Fair NONE1MainWADEQSCMMVADV18.715.010.31.81FIRMCBLSEVENunknUNEVSTNDUNSP
72016-06-03 09:21ASTYesMRT/Y/JUSGS6.76 0.80Fair NONE150124700WADEQSCMMVADV6.768.7511.50.59FIRMCBLSEVENunknEVENSTNDUNSP
62016-02-24 07:42ASTYesYM, IRUSGS0.82 Poor NONE1MainWADEQSCMMVADV0.824.801.800.46FIRMCBLSEVENunknEVENSTNDUNSP
52015-11-17 08:04ASTYesMRT/YMUSGS9.43 0.30Fair NONE150124700WADEQSCMMVADV9.4312.08.391.12FIRMGRVLEVENunknEVENSTNDUNSP
22015-09-02 09:31ASTYesCG/SAUSGS0.98 0.000.50Good NONE1MainWADEQSCMMVADV0.9815.57.660.13FIRMGRVLEVENunknEVENSTNDUNSP
42015-05-05 07:36:30ASTYesYM/IRUSGS0.67 0.50GoodClearNONE150124700WADEQSCMMVADV0.676.002.150.31FIRMCBLSEVENunknEVENSTNDDNST200.00
32015-02-02 12:01:30ASTYesYM/MRUSGS4.68 0.60GoodClearNONE150124700WADEQSCMMVADV4.6818.011.50.41FIRMGRVLEVENunknEVENSTNDDNST200.00
12014-11-20 11:00ASTYesAT,CG,IRUSGS9.09 PoorClearNONE150124700WADEQSCMMVADV9.0922.09.850.92FIRMGRVLEVENunknEVENSTNDUNSP