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Water Quality Samples for USA
Grouped by County

! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024
with a full decommission expected 6 months later. Learn more about the upcoming change and where to find the new samples data in our blog.
Some complex retrievals may take a few minutes.

Site Selection Results -- 62 sites found


Hydrologic unit = 18050005
Minimum number of samples = 1

Save file of selected sites to local disk for future upload

Data for individual sites can be obtained by selecting the site number below

  group icon Marin County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11460110 GERBODE VALLEY C NR SAUSALITO CA 1986-01-29 2006-07-12 13
USGS 11460120 RODEO LAGOON A FORT CRONKHITE NR SAUSALITO CA 1986-01-29 1988-06-08 6
USGS 11460130 TENNESSEE VALLEY C NR TAMALPAIS VALLEY CA 1986-01-30 1988-06-02 7
USGS 11460140 REDWOOD C BL MUIR WOODS NR MILL VALLEY CA 1986-01-31 1988-06-07 8
USGS 11460152 REDWOOD C A MUIR BCH NR TAMALPAIS VALLEY CA 1986-01-31 2006-07-12 13
USGS 11460154 GREEN GULCH A MUIR BCH NR TAMALPAIS VALLEY CA 1986-01-30 1988-06-02 8
USGS 11460156 WEBB C NR STINSON BEACH CA 1986-01-31 1988-06-01 7
USGS 11460158 TABLE ROCK C A STINSON BCH CA 1986-01-30 1988-06-01 7
USGS 11460160 MORSES C A BOLINAS CA 1967-05-18 1969-07-07 73
USGS 11460165 AUDUBON C NR BOLINAS CA 1967-05-18 1969-07-07 83
USGS 11460170 PINE C A BOLINAS CA 1968-01-29 2015-08-27 46
USGS 11460400 LAGUNITAS C A SAMUEL P TAYLOR STATE PARK CA 2003-10-24 2006-05-31 67
USGS 11460600 LAGUNITAS C NR PT REYES STATION CA 1977-08-10 2005-10-05 78
USGS 11460610 OLEMA C A OLEMA CA 1977-08-10 1977-08-10 1
USGS 11460750 WALKER C NR MARSHALL CA 2003-10-23 2006-06-01 70
USGS 11460800 WALKER C NR TOMALES CA 1970-11-12 1972-05-02 35
USGS 374948122321401 RODEO COVE OCEAN FRONT SITE NR SAUSALITO CA 2016-04-12 2016-08-16 2
USGS 374949122320101 RODEO LAGOON W TOP NR SAUSALITO CA 2016-02-03 2022-08-26 12
USGS 374949122320102 RODEO LAGOON W BOTTOM NR SAUSALITO CA 2016-04-11 2022-11-08 39
USGS 374953122314101 RODEO LAGOON E TOP NR SAUSALITO CA 2016-02-03 2022-08-26 16
USGS 374953122314102 RODEO LAGOON E BOTTOM NR SAUSALITO CA 2016-04-11 2022-11-08 42
USGS 374954122320001 STORM DRAIN A MITCHELL RD NR SAUSALITO CA 2016-03-21 2016-03-21 1
USGS 374954122320601 SEWAGE PIPE A MITCHELL RD NR SAUSALITO CA 2016-04-12 2016-08-16 2
USGS 374955122313001 RODEO POND NR SAUSALITO CA 2016-04-12 2016-08-15 3
USGS 374955122313301 RODEO POND WEIR NR SAUSALITO CA 2016-04-12 2022-11-08 29
USGS 374955122321101 STORM DR A MITCHELL RD FOOTBRIDGE NR SAUSALITO CA 2016-03-21 2016-03-21 1
USGS 374956122322201 UNNAMED TRIB A RODEO COVE NR SAUSALITO CA 2016-04-12 2016-04-12 1
USGS 374958122304601 RODEO C A RODEO VALLEY TRAIL NR SAUSALITO CA 2016-04-12 2016-08-16 2
USGS 375007122310701 GERBODE VALLEY C A MIWOK TRAIL NR SAUSALITO CA 2016-04-12 2016-08-15 2
USGS 375019122295601 UNNAMED TRIB A LAMORAUX DR NR SAUSALITO CA 2016-04-12 2016-08-15 2
USGS 375032122294301 RODEO C A TUNNEL NR SAUSALITO CA 2016-04-12 2016-08-16 2
USGS 375159122343801 REDWOOD C A BIG LAGOON BR NR MUIR BEACH CA 1998-11-23 2001-09-26 18
USGS 375823122440701 POND N OF WOODVILLE NR OLEMA, CA 2009-04-01 2009-04-01 4
USGS 380100122461001 POND N OF FIVE BROOKS NR OLEMA, CA 2009-04-01 2009-04-01 4
USGS 380105122461901 POND NORTH OF SHOOK HOUSE NR OLEMA CA 2009-04-01 2009-04-01 4
USGS 380112122464401 SAG POND NR OLEMA, CA 2009-03-31 2009-03-31 4
USGS 380141122465601 POND NR OLEMA, CA 2009-03-10 2010-06-03 18
USGS 380201122574101 POND 1 AT D-RANCH NR INVERNESS, CA 2009-03-30 2009-03-30 1
USGS 380202122574001 POND 2 AT D-RANCH NR INVERNESS, CA 2009-03-30 2009-03-30 1
USGS 380207122574201 POND 3 AT D-RANCH NR INVERNESS, CA 2009-03-30 2009-03-30 1
USGS 380230122471901 OLEMA C A BEAR VALLEY RD BR NR OLEMA CA 1998-11-23 2001-09-26 26
USGS 380318122474301 POND NR POINT REYES STATION, CA 2009-03-31 2009-03-31 3
USGS 380333122473301 POND 2 NR POINT REYES STATION, CA 2009-03-31 2009-09-16 4
USGS 380633122564001 UNNAMED TRIB 7 TO LOWER ABBOTTS LAGOON PT REYES 1999-02-06 1999-02-07 2
USGS 380642122563601 UNNAMED TRIB 6 TO LOWER ABBOTTS LAGOON BL H RANCH 1999-02-06 1999-02-07 3
USGS 380652122570501 ABBOTTS LAGOON LOWER LAGOON PT REYES NTL SEASHORE 1998-11-24 1999-08-26 8
USGS 380708122563501 UNNAMED TRIB 5 TO MIDDLE ABBOTTS LAGOON NR H RANCH 1999-02-07 1999-04-11 3
USGS 380717122564101 ABBOTTS LAGOON MIDDLE LAGOON PT REYES NTL SEASHORE 1998-11-24 1999-08-26 10
USGS 380722122561601 UNNAMED TRIB 4 TO MIDDLE ABBOTTS LAGOON BL H RANCH 1999-02-06 1999-02-07 3
USGS 380722122561701 POND NR ABBOTTS LAGOON NR INVERNESS, CA 2009-03-31 2009-09-16 6
USGS 380736122562401 ABBOTTS LAGOON UPPER LAGOON PT REYES NTL SEASHORE 1998-11-24 1999-08-26 8
USGS 380738122560701 UNNAMED TRIB 1 TO UPPER ABBOTTS LAGOON PT REYES 1998-11-24 1999-08-26 10
USGS 380752122562501 UNNAMED TRIB 3 TO UPPER ABBOTS LAGOON BL MCC RANCH 1999-02-07 1999-04-11 2
USGS 380753122561501 UNNAMED TRIB 2 TO UPPER ABBOTS LAGOON AB MCC RANCH 1999-02-06 1999-04-11 5
USGS 381448122542001 005N010W25J001M 2012-07-24 2022-05-25 4
USGS 381455122534001 005N009W30F001M 2004-10-06 2004-10-06 3
USGS 381524122573701 005N010W21Q001M 2004-09-23 2014-11-03 4
USGS 381709122553101 005N010W11Q001M 2012-07-24 2012-07-24 2
  group icon Sonoma County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 381758122493801 005N009W10A001M 2012-06-18 2012-06-18 2
USGS 381827122434601 005N008W03G001M 2004-09-01 2004-09-01 3
USGS 381906122511401 006N009W33J001M 2004-11-04 2004-11-04 3
USGS 382002122572901 006N010W27M001M 2004-10-28 2004-10-28 3