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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 380629121385202 TWITCHELL ISL DEMO PROJ W POND E OUTLET
Sacramento County, California
Hydrologic Unit Code 18020163
Latitude  38°06'29", Longitude 121°38'52" NAD27
Gage datum -15 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 		 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)
401999-03-16 11:00PSTYesgwUSGS0.010.05 Excellent NONE1Imported Channel 1OTHRQFLUM 0.01 UNSPUNSPUNSPunknUNSPUNSPUNSP
391999-03-10 12:00PSTYesgwUSGS0.100.22 Excellent NONE1Imported Channel 1OTHRQFLUM 0.10 UNSPUNSPUNSPunknUNSPUNSPUNSP
381999-02-24 11:00PSTYesgwUSGS0.400.53 Excellent NONE1Imported Channel 1OTHRQFLUM 0.40 UNSPUNSPUNSPunknUNSPUNSPUNSP
371999-02-10 12:00PSTYesgwUSGS0.570.66 Excellent NONE1Imported Channel 1OTHRQFLUM 0.57 UNSPUNSPUNSPunknUNSPUNSPUNSP
361999-02-05 14:00PSTYesgwUSGS0.000.00 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
351999-01-28 15:00PSTYesgwUSGS0.000.00 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
341999-01-27 11:00PSTYesgwUSGS0.000.02 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
331999-01-26 11:00PSTYesgw/ lbUSGS0.000.02 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
321999-01-19 11:00PSTYesgw/ lbUSGS0.000.02 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
311998-12-21 13:00PSTYesgwUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
301998-12-16 10:00PSTYesgwUSGS0.000.02 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
291998-12-15 11:00PSTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
281998-12-04 12:00PSTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
271998-12-01 12:00PSTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
261998-11-25 14:00PSTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
251998-11-24 09:00PSTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
241998-11-20 12:00PSTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
231998-11-10 13:00PSTYesgw/bdkUSGS0.000.02 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
221998-11-09 13:00PSTYesgw/bdkUSGS0.000.02 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
211998-10-21 13:00PDTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
201998-09-29 12:00PDTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
191998-09-22 10:00PDTYesjs/ fmUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
181998-08-19 14:00PDTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
171998-07-22 13:00PDTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
161998-06-30 11:00PDTYesjs/ fmUSGS0.000.03 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
151998-06-10 15:00PDTYesgw/bdkUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
141998-05-22 12:00PDTYesgw/bdkUSGS0.000.00 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
131998-05-14 17:00PDTYesgw/bdkUSGS0.000.02 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
121998-04-22 10:00PDTYesjs/ fmUSGS0.000.02 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
111998-04-20 12:00PDTYesjs/ fmUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
101998-04-15 10:00PDTYesjs/ fmUSGS0.000.01 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
91998-04-02 11:00PSTYesjs/ fmUSGS0.050.14 Excellent NONE1Imported Channel 1OTHRQFLUM 0.05 UNSPUNSPUNSPunknUNSPUNSPUNSP
81998-03-30 12:00PSTYesgw/bdkUSGS0.030.10 Excellent NONE1Imported Channel 1OTHRQFLUM 0.03 UNSPUNSPUNSPunknUNSPUNSPUNSP
71998-03-26 10:00PSTYesjs/ fmUSGS0.050.15 Excellent NONE1Imported Channel 1OTHRQFLUM 0.05 UNSPUNSPUNSPunknUNSPUNSPUNSP
61998-01-26 12:00PSTYesgw/bdkUSGS0.000.00 Excellent NONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP
51998-01-22 12:00PSTYesgw/bdkUSGS0.190.34 Excellent NONE1Imported Channel 1OTHRQFLUM 0.19 UNSPUNSPUNSPunknUNSPUNSPUNSP
31998-01-15 12:00PSTYesgw/bdkUSGS0.760.79 Fair NONE1Imported Channel 1OTHRQFLUM 0.76 UNSPUNSPUNSPunknUNSPUNSPUNSP
21998-01-13 12:00PSTYesgw/bdkUSGS0.390.52 Excellent NONE1Imported Channel 1OTHRQFLUM 0.39 UNSPUNSPUNSPunknUNSPUNSPUNSP
11997-12-29 15:00PSTYesmdgUSGS0.000.00 ExcellentClearNONE1Imported Channel 1OTHRQFLUM 0.00 UNSPUNSPUNSPunknUNSPUNSPUNSP