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Streamflow Measurements for the Nation


USGS 01476450 Ridley Creek at Rt 3 near Willistown, PA
Chester County, Pennsylvania
Hydrologic Unit Code 02040202
Latitude  39°58'01", Longitude  75°28'58" NAD83
Drainage area 13.9  square miles
Gage datum 225 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)
242023-10-25 12:01EDTYesVJR / LEOUSGS9.07 Poor unkn1mainWADEQSCMMVADV9.0743.031.90.28FIRMBLDREVENSTDYEVENUNKNUNSP
232022-11-09 12:16ESTYesleoUSGS10.5 Fair unkn1mainWADEQSCMMVADV10.531.519.80.53FIRMCBLSEVENSTDYEVENSTNDATGA0.00
222021-10-20 12:48EDTYesLEOUSGS10.8 GoodClearunkn1mainWADEQSCMMVADV10.832.319.60.55FIRMCBLSEVENSTDYEVENSTNDATGA0.00
212020-11-10 13:35:30ESTYesAGRUSGS12.8 Fair unkn1mainWADEQSCMMVADV12.843.521.10.61UNSPUNSPUNSPUNSPUNSPUNSPUNSP
202019-10-30 10:05EDTYesAGRUSGS14.7 FairVegetationLightunkn1MainWADEQSCMMVADV14.741.015.90.93FIRMCBLSEVENSTDYEVENUNFMATGA0.00
192018-10-22 11:26EDTYesAGRUSGS18.9 FairVegetationLightunkn1MainWADEQSCMMVADV18.933.016.91.12FIRMCBLSUNEVSTDYEVENSTNDATGA0.00
182017-10-26 08:49EDTYesagrUSGS7.25 GoodClearunkn1mainWADEQSCMMVADV7.2528.211.90.61UNSPCBLSUNSPSTDYUNSPUNSPDNST5.00
172016-10-24 11:47EDTYesPKAUSGS6.17 0.50FairDebrisLightunkn1mainWADEQSCMMVADV6.1719.07.800.79SOFTGRVLEVENunknEVENSTNDUNSP
162015-10-20 13:19EDTYesPKAUSGS7.10 0.50PoorDebrisLightunkn1mainWADEQSCMMVADV7.1039.037.00.19SOFTSANDEVENunknEVENUNKNDNST30.00
152014-10-06 12:00EDTYesAGRUSGS6.40 FairDebrisLightunkn1Imported Channel 1WADEQSCMMVADV6.4032.516.80.38FIRMCBLSUNEVunknUNSPUNSPUNSP
142013-10-21 15:00EDTYesAGRUSGS11.3 GoodVegetationLightunkn1Imported Channel 1WADEQSCMMVADV11.332.715.70.72FIRMGRVLEVENunknEVENUNSPUNSP
132012-10-11 -- ----YesAGRUSGS9.44 GoodDebrisLightunkn1Imported Channel 1WADEQSCMMVADV9.4443.717.40.54FIRMGRVLEVENunknEVENUNSPUNSP
122011-10-18 12:30EDTYesAGRUSGS21.6 GoodDebrisLightunkn1Imported Channel 1WADEQSCMMVADV21.632.019.21.12FIRMBLDREVENunknEVENUNFMUNSP
112010-10-18 13:00EDTYesAGRUSGS13.5 FairClearunkn1Imported Channel 1WADEQSCMMVADV13.546.829.70.45FIRMGRVLEVENunknEVENSTNDUNSP
102009-10-05 15:00EDTYesAGRUSGS13.0 FairDebrisLightunkn1Imported Channel 1WADEQSCMMVADV13.029.414.80.88FIRMBLDRUNEVunknUNEVUNSPUNSP
92008-10-15 13:23:06EDTYesAGRUSGS6.91 GoodClearunkn1Imported Channel 1WADEQSCMMVADV6.9130.311.80.58UNSPUNSPUNSPunknEVENUNSPUNSP
82007-10-03 13:20EDTYesAGRUSGS5.30 GoodVegetationLightunkn1Imported Channel 1WADEunspeunkno5.3032.013.60.39UNSPUNSPUNSPunknUNSPUNSPUNSP
72006-10-16 13:50EDTYesAGRUSGS11.3 FairVegetationLightunkn1Imported Channel 1UNSPother 11.3 UNSPUNSPUNSPunknUNSPUNSPUNSP
62005-10-17 12:35EDTYesAGRUSGS10.6 GoodDebrisLightunkn1Imported Channel 1WADEunspeunkno10.631.316.90.63UNSPUNSPUNSPunknUNSPUNSPUNSP
52004-10-08 10:30EDTYesAGRUSGS24.6 GoodClearunkn1Imported Channel 1WADEunspeunkno24.634.547.10.52UNSPUNSPUNSPunknUNSPUNSPUNSP
42003-10-06 11:05EDTYesAGRUSGS17.8 FairClearunkn1Imported Channel 1WADEunspeunkno17.848.019.20.93UNSPUNSPUNSPunknUNSPUNSPUNSP
32002-10-07 11:45EDTYesleo/agrUSGS4.07 GoodDebrisLightunkn1Imported Channel 1WADEunspeunkno4.0724.47.750.53UNSPUNSPUNSPunknUNSPUNSPUNSP
22002-08-01 11:30EDTYesAGRUSGS2.78 GoodClearunkn1Imported Channel 1WADEunspeunkno2.7825.05.140.54UNSPUNSPUNSPunknUNSPUNSPUNSP
12001-10-11 12:10EDTYesmoh/agrUSGS4.73 Good unkn1Imported Channel 1WADEunspeunkno4.7321.56.300.75UNSPUNSPUNSPunknUNSPUNSPUNSP