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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 11185185 SUISUN BAY A MALLARD IS CA
Contra Costa County, California
Hydrologic Unit Code 18050001
Latitude  38°02'34", Longitude 121°55'09" NAD27
Gage datum 0 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)
572014-01-15 15:49PSTYesTM/SHUSGS46700 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP46700 UNSPUNSPUNSPunknUNSPUNSPUNSP
562014-01-15 15:33PSTYesTM/SHUSGS-18100 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-18100 UNSPUNSPUNSPunknUNSPUNSPUNSP
552014-01-15 15:15PSTYesTM/SHUSGS-79800 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-79800 UNSPUNSPUNSPunknUNSPUNSPUNSP
542014-01-15 14:57PSTYesTM/SHUSGS-146000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-146000 UNSPUNSPUNSPunknUNSPUNSPUNSP
532014-01-15 14:38PSTYesTM/SHUSGS-197000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-197000 UNSPUNSPUNSPunknUNSPUNSPUNSP
522014-01-15 14:17PSTYesTM/SHUSGS-257000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-257000 UNSPUNSPUNSPunknUNSPUNSPUNSP
512014-01-15 13:58PSTYesTM/SHUSGS-285000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-285000 UNSPUNSPUNSPunknUNSPUNSPUNSP
502014-01-15 13:39PSTYesTM/SHUSGS-317000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-317000 UNSPUNSPUNSPunknUNSPUNSPUNSP
492014-01-15 13:20PSTYesTM/SHUSGS-331000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-331000 UNSPUNSPUNSPunknUNSPUNSPUNSP
482014-01-15 12:58PSTYesTM/SHUSGS-358000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-358000 UNSPUNSPUNSPunknUNSPUNSPUNSP
472014-01-15 12:35PSTYesTM/SHUSGS-364000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-364000 UNSPUNSPUNSPunknUNSPUNSPUNSP
462014-01-15 12:14PSTYesTM/SHUSGS-360000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-360000 UNSPUNSPUNSPunknUNSPUNSPUNSP
452014-01-15 11:32PSTYesTM/SHUSGS-309000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-309000 UNSPUNSPUNSPunknUNSPUNSPUNSP
442014-01-15 11:13PSTYesTM/SHUSGS-268000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-268000 UNSPUNSPUNSPunknUNSPUNSPUNSP
432014-01-15 10:57PSTYesTM/SHUSGS-239000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-239000 UNSPUNSPUNSPunknUNSPUNSPUNSP
422014-01-15 10:45PSTYesTM/SHUSGS-209000 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-209000 UNSPUNSPUNSPunknUNSPUNSPUNSP
412013-02-13 14:42PSTYesAMP/TVDUSGS-2760004.41 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-276000 UNSPUNSPUNSPunknUNSPUNSPUNSP
402013-02-13 14:27PSTYesAMP/TVDUSGS-2380004.26 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-238000 UNSPUNSPUNSPunknUNSPUNSPUNSP
392013-02-13 14:12PSTYesAMP/TVDUSGS-2140004.07 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-214000 UNSPUNSPUNSPunknUNSPUNSPUNSP
382013-02-13 13:58PSTYesAMP/TVDUSGS-1670003.87 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-167000 UNSPUNSPUNSPunknUNSPUNSPUNSP
372013-02-13 13:41PSTYesAMP/TVDUSGS-1090003.61 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-109000 UNSPUNSPUNSPunknUNSPUNSPUNSP
362013-02-13 13:22PSTYesAMP/TVDUSGS-408003.29 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-40800 UNSPUNSPUNSPunknUNSPUNSPUNSP
352013-02-13 13:04PSTYesAMP/TVDUSGS61902.99 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP6190 UNSPUNSPUNSPunknUNSPUNSPUNSP
342013-02-13 12:32PSTYesAMP/TVDUSGS1380002.45 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP138000 UNSPUNSPUNSPunknUNSPUNSPUNSP
332013-02-13 12:09PSTYesAMP/TVDUSGS1940002.14 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP194000 UNSPUNSPUNSPunknUNSPUNSPUNSP
322013-02-13 11:44PSTYesAMP/TVDUSGS2620001.93 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP262000 UNSPUNSPUNSPunknUNSPUNSPUNSP
312013-02-13 11:22PSTYesAMP/TVDUSGS2900001.85 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP290000 UNSPUNSPUNSPunknUNSPUNSPUNSP
302013-02-13 11:01PSTYesAMP/TVDUSGS3220001.84 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP322000 UNSPUNSPUNSPunknUNSPUNSPUNSP
292013-01-17 16:15PSTYesTMK/CJSUSGS-507003.56 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-50700 UNSPUNSPUNSPunknUNSPUNSPUNSP
282013-01-17 16:04PSTYesTMK/CJSUSGS-296003.43 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-29600 UNSPUNSPUNSPunknUNSPUNSPUNSP
272013-01-17 15:52PSTYesTMK/CJSUSGS88003.28 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP8800 UNSPUNSPUNSPunknUNSPUNSPUNSP
262013-01-17 15:40PSTYesTMK/CJSUSGS372003.13 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP37200 UNSPUNSPUNSPunknUNSPUNSPUNSP
252013-01-17 15:28PSTYesTMK/CJSUSGS768002.99 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP76800 UNSPUNSPUNSPunknUNSPUNSPUNSP
242013-01-17 15:16PSTYesTMK/CJSUSGS989002.86 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP98900 UNSPUNSPUNSPunknUNSPUNSPUNSP
232013-01-17 15:04PSTYesTMK/CJSUSGS1390002.72 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP139000 UNSPUNSPUNSPunknUNSPUNSPUNSP
222013-01-17 14:53PSTYesTMK/CJSUSGS1620002.60 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP162000 UNSPUNSPUNSPunknUNSPUNSPUNSP
212013-01-17 14:42PSTYesTMK/CJSUSGS1910002.50 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP191000 UNSPUNSPUNSPunknUNSPUNSPUNSP
202013-01-17 14:30PSTYesTMK/CJSUSGS2080002.41 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP208000 UNSPUNSPUNSPunknUNSPUNSPUNSP
192013-01-17 14:17PSTYesTMK/CJSUSGS2410002.34 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP241000 UNSPUNSPUNSPunknUNSPUNSPUNSP
182013-01-17 13:18PSTYesTMK/CJSUSGS3150002.25 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP315000 UNSPUNSPUNSPunknUNSPUNSPUNSP
172013-01-17 12:24PSTYesTMK/CJSUSGS3450002.50 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP345000 UNSPUNSPUNSPunknUNSPUNSPUNSP
162013-01-17 12:07PSTYesTMK/CJSUSGS3480002.61 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP348000 UNSPUNSPUNSPunknUNSPUNSPUNSP
152013-01-17 11:48PSTYesTMK/CJSUSGS3510002.71 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP351000 UNSPUNSPUNSPunknUNSPUNSPUNSP
142013-01-17 11:30PSTYesTMK/CJSUSGS3420002.84 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP342000 UNSPUNSPUNSPunknUNSPUNSPUNSP
132013-01-17 11:12PSTYesTMK/CJSUSGS3300003.00 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP330000 UNSPUNSPUNSPunknUNSPUNSPUNSP
122013-01-17 10:55PSTYesTMK/CJSUSGS3120003.15 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP312000 UNSPUNSPUNSPunknUNSPUNSPUNSP
112013-01-17 09:54PSTYesTMK/CJSUSGS1880003.84 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP188000 UNSPUNSPUNSPunknUNSPUNSPUNSP
102013-01-17 09:34PSTYesTMK/CJSUSGS1280004.13 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP128000 UNSPUNSPUNSPunknUNSPUNSPUNSP
92013-01-10 14:58PSTYesAMP/PABUSGS1390005.48 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP139000 UNSPUNSPUNSPunknUNSPUNSPUNSP
82013-01-10 14:39PSTYesAMP/PABUSGS580005.84 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP58000 UNSPUNSPUNSPunknUNSPUNSPUNSP
72013-01-10 13:25PSTYesAMP/PABUSGS-2610006.77 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-261000 UNSPUNSPUNSPunknUNSPUNSPUNSP
62013-01-10 13:06PSTYesAMP/PABUSGS-3000006.86 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-300000 UNSPUNSPUNSPunknUNSPUNSPUNSP
52013-01-10 12:27PSTYesAMP/PABUSGS-3840006.88 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-384000 UNSPUNSPUNSPunknUNSPUNSPUNSP
42013-01-10 12:09PSTYesAMP/PABUSGS-3980006.84 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-398000 UNSPUNSPUNSPunknUNSPUNSPUNSP
32013-01-10 10:58PSTYesAMP/PABUSGS-4160006.41 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-416000 UNSPUNSPUNSPunknUNSPUNSPUNSP
22013-01-10 10:33PSTYesAMP/PABUSGS-3930006.18 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-393000 UNSPUNSPUNSPunknUNSPUNSPUNSP
12013-01-10 10:14PSTYesAMP/PABUSGS-3800005.98 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP-380000 UNSPUNSPUNSPunknUNSPUNSPUNSP