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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 186 sites found


Hydrologic unit = 15030101
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 Mohave County, Arizona
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 09421900 COLORADO RV AT WILLOW BEACH, AZ 1992-01-29 2006-09-08 9
USGS 09423550 TOPOCK MARSH INLET NEAR NEEDLES, CA 1986-08-27 1986-08-27 4
USGS 09423640 TOPOCK MARSH NR OUTLET NR NEEDLES, CA. 1976-11-01 1983-10-03 152
USGS 09423650 TOPOCK MARSH OUTLET NEAR TOPOCK, AZ 1974-07-19 1976-10-01 53
USGS 09424000 COLORADO RIVER NR TOPOCK, AZ. 1969-08-01 2021-06-08 158
USGS 342803114205501 B-13-20 15BCC1 1968-06-10 1968-06-10 1
USGS 342806114205401 B-13-20 15BCD1 2000-10-24 2001-05-09 2
USGS 342940114212901 B-13-20 04ACC1 1968-06-10 1968-06-10 1
AZ014 343022114213401 B-14-20 33DCB1 1988-07-06 2008-06-25 16
USGS 343251114215401 B-14-20 16CDC1 1968-06-06 1968-06-06 1
AZ014 344319114283101 B-16-21 35CDD2 1990-08-02 1990-08-02 1
USGS 344334114274601 B-16-21 36CBC1 2006-06-15 2006-06-15 1
USGS 344459114313801 Colorado River above I-40 near Topock, AZ 2020-09-01 2021-06-08 4
AZ014 344607114295001 B-16-21 15CBD2 1989-07-20 1989-07-20 1
USGS 344619114290101 B-16-21 15ACA1 1962-09-11 1962-09-11 1
USGS 344716114334001 016N022W01F PRECIP 1999-07-27 2002-10-08 7
USGS 344716114334201 B-16-22 12BDD1 1988-03-15 1988-03-15 1
USGS 344723114280801 B-16-21 11ABD1 1984-05-30 1984-05-30 1
USGS 345109114354501 B-17-22 14CCC1 1962-05-01 1962-05-01 1
USGS 345109114360001 B-17-22 15DDC1 1967-03-02 1967-03-02 1
USGS 345111114340601 B-17-22 13DCB1 1967-03-02 1967-03-02 1
USGS 345111114351601 B-17-22 14DCC1 1980-06-17 1980-06-17 1
USGS 345116114333801 B-17-21 18CCB1 1962-05-01 1962-05-01 1
USGS 345155114334501 B-17-22 13AAA1 1962-05-01 1962-05-01 1
USGS 345155114341101 B-17-22 13ABB1 1967-03-02 1967-03-02 1
USGS 345155114344301 B-17-22 13BBB1 1967-04-14 1967-04-14 1
USGS 345155114360501 B-17-22 15ABA01 1967-02-15 1967-02-15 1
USGS 345159114361801 B-17-22 10DCC1 1980-06-18 1980-06-18 1
USGS 345200114352001 B-17-22 11DCC1 1967-02-15 2007-06-07 15
USGS 345201114334501 B-17-22 12DDD1 1965-05-19 1965-05-19 1
USGS 345201114353701 B-17-22 11CDC1 1967-04-14 1967-04-14 1
USGS 345201114355201 B-17-22 10DDD1 1965-05-17 1965-05-17 1
USGS 345202114323501 B-17-21 08CCC1 1962-05-01 1962-05-01 1
USGS 345202114323502 B-17-21 08CCC2 1965-05-20 1965-05-20 1
USGS 345203114344201 B-17-22 12CCC1 1962-05-01 1962-05-01 1
USGS 345203114344202 B-17-22 12CCC2 1965-05-18 1965-05-18 1
USGS 345203114364901 B-17-22 10CCC1 1965-05-21 1965-05-21 1
USGS 345213114332701 B-17-21 07CBD1 1967-02-15 1967-02-15 1
USGS 345240114325701 B-17-21 07ABD1 1967-04-14 1967-04-14 1
USGS 345240114332801 B-17-21 07BBD1 1967-02-15 1967-02-15 1
USGS 345246114354501 B-17-22 11BBB1 1962-05-01 1962-05-01 1
USGS 345247114364901 B-17-22 10BBB1 1962-05-01 1962-05-01 1
USGS 345248114344901 B-17-22 12BBB1 1962-05-01 1962-05-01 1
USGS 345254114333701 B-17-21 06CCC1 1962-05-02 1962-05-02 1
USGS 345321114323501 B-17-21 05BCC1 1985-03-21 1985-03-21 1
USGS 345324114323601 B-17-21 05BCB1 1968-04-23 1968-04-23 1
USGS 345334114364801 B-17-22 03BBC1 1985-03-21 1985-03-21 1
USGS 345338114342101 B-17-22 01BAD1 1967-02-18 1967-02-18 1
USGS 345339114181801 B-17-19 04ABB1 2001-02-07 2001-02-07 1
USGS 345418114351901 B-18-22 35BDA01 1964-06-03 1964-06-03 1
USGS 345432114354701 B-18-22 35BBB01 1962-03-06 1962-03-06 1
USGS 345438114355501 B-18-22 27DDD1 1962-05-02 1962-05-02 1
USGS 345438114355502 B-18-22 27DDD2 1967-02-28 1967-02-28 1
USGS 345438114355503 B-18-22 27DDD3 1967-02-28 1967-02-28 1
USGS 345516114364901 B-18-22 27BBC1 1962-11-01 2013-08-29 4
USGS 345524114340801 B-18-22 25ABB1 1967-02-28 1967-02-28 1
USGS 345524114340802 B-18-22 25ABB2 1967-02-28 1967-02-28 1
USGS 345532114354502 B-18-22 23CCC2 1967-03-01 1967-03-01 1
USGS 345538114352801 B-18-22 23CDB1 1968-04-25 1968-04-25 1
USGS 345554114354601 B-18-22 23BCC2 1967-03-01 1967-03-01 1
USGS 345615114351601 B-18-22 23ABB1 1967-03-01 1967-03-01 1
USGS 345616114355401 B-18-22 22AAA1 1962-05-02 1962-05-02 1
USGS 345617114340501 B-18-22 24ABA1 1962-05-02 1962-05-02 1
USGS 345623114344301 B-18-22 13CCC1 1962-05-02 1962-05-02 1
USGS 345638114344101 B-18-22 13CBC1 1964-06-03 1964-06-03 1
USGS 345705114355101 B-18-22 15AAA1 1989-07-20 1989-07-20 1
USGS 345710114360001 B-18-22 15AAB1 1962-11-01 1962-11-01 1
USGS 345725114365301 B-18-22 10CBC1 1987-08-13 1987-08-13 1
USGS 345804114350001 B-18-22 02DCD1 1981-08-18 1984-07-27 2
USGS 345808114365001 B-18-22 03CCC1 1965-05-02 1965-05-02 1
USGS 345809114354501 B-18-22 02CCC1 1962-05-02 1962-05-02 1
USGS 345824114322201 B-18-21 05CBD2 1981-08-18 1984-07-27 2
USGS 345939114342501 B-19-22 36BAC1 1962-11-02 1962-11-02 1
USGS 345949114342901 B-19-22 36BAB1 1962-11-01 1962-11-01 1
USGS 345951114342901 B-19-22 25CDC 1984-07-27 1984-07-27 1
USGS 345953114345001 B-19-22 26DDD1 1962-11-02 1962-11-02 1
USGS 350040114350801 B-19-22 26AAB1 1967-04-11 1967-04-11 1
USGS 350048114354501 B-19-22 23CCC1 1962-09-19 1988-03-17 2
USGS 350148114355101 B-19-22 14CDB1 1967-04-13 1967-04-13 1
USGS 350149114355301 B-19-22 15DAD1 1967-04-13 1967-04-13 1
USGS 350208114361801 B-19-22 15ACB1 1962-09-18 1962-09-18 1
USGS 350222114361801 B-19-22 15ABB1 1964-06-03 1964-06-03 1
USGS 350309114353801 B-19-22 11BBD1 1967-04-13 1967-04-13 1
USGS 350314114353201 B-19-22 11BAB1 1962-05-02 1962-05-02 1
USGS 350415114353501 B-20-22 35CDD1 1968-05-07 1968-05-07 1
USGS 350505114350601 B-20-22 26DCD1 1968-04-24 1968-04-24 1
USGS 350512114353101 B-20-22 26CAC1 1968-04-24 1968-04-24 1
USGS 350513114361501 B-20-22 29ACC1 1962-09-18 1962-09-18 1
USGS 350543114372501 B-20-22 19CDB1 1986-07-23 1986-07-23 1
USGS 350554114343001 B-20-22 25BAB1 1968-04-24 1968-04-24 1
AZ014 350557113335701 B-20-22 24DDC1 1986-07-23 2007-06-06 15
USGS 350614114364701 B-20-22 19ADA1 1962-09-18 1989-07-20 2
USGS 350723114364201 213 S32 E66 33AAA 1 1973-08-16 1992-08-31 47
USGS 350726114375501 213 S32 E66 33BBB 1 1973-11-17 1992-08-31 49
AZ014 350841114334601 B-20-22 01DDD1 1989-07-20 1989-07-20 1
AZ014 350846114334501 B-20-22 01DAD2 1988-03-16 1988-03-16 1
USGS 350846114334501 B-20-21 06CBC1 1964-06-03 1964-06-03 1
USGS 350908114340301 B-20-22 01ACA1 1968-04-23 1968-04-23 1
AZ014 351015114305901 B-21-21 27CCB1 1995-04-05 2007-06-06 7
USGS 351020114255300 UNNAMED WASH NEAR THUMB BUTTE 2001-02-06 2001-02-06 1
USGS 351027114260301 B-21-20 29DBA1 2001-02-07 2001-02-07 1
USGS 351120114320001 B-21-21 21CBB1 1962-03-07 1990-05-01 5
USGS 351308114335501 LAKE MOHAVE AT KATHERINE LANDING VOC SAMPLE SITE 1999-06-02 2006-11-02 17
USGS 351359114341101 LAKE MOHAVE AT NORTH TELPHONE COVE VOC SAMPLE SITE 1999-06-02 2006-11-02 16
USGS 352000114352001 LAKE MOHAVE AT MOHAVE CROSSING, AZ 2005-06-17 2006-09-05 7
USGS 352843114300901 B-24-21 10DDB 1982-05-03 1982-05-03 1
USGS 353011114384401 B-25-22 33CCC1 1963-05-22 1963-05-22 1
USGS 353011114400401 B-25-22 31DCD1 1964-12-14 1964-12-14 1
USGS 353103114384501 B-25-22 29DDD1 1962-04-03 1962-04-03 1
USGS 353123114391501 LAKE MOHAVE AT YUMA COVE VOC SAMPLE SITE 1999-06-02 2006-09-05 8
USGS 355158114394401 B-29-22 29DCC2 UNSURV 1970-09-28 1989-07-18 2
USGS 355230114395601 COLORADO RV BLW FISH HAT NR WILLOW BEACH, AZ 2006-04-04 2006-04-04 1
USGS 355233114395101 B-29-22 29ACB FWS HATCHERY 2008-07-29 2008-07-29 1
USGS 355241114401601 Colorado River above Willow Beach, Arizona 2020-08-31 2021-06-07 4
USGS 355738114433301 B-30-23 26BCC1 2008-07-10 2019-06-19 5
USGS 355804114432801 B-30-23 23CCD1 2008-02-28 2009-08-13 3
USGS 355942114441801 B-30-23 15BAB1 2008-02-27 2008-12-02 4
USGS 355956114375801 B-30-22 10CDB 2009-09-29 2010-02-19 3
USGS 360001114442401 B-30-23 10CAC1 1970-10-23 1970-10-23 1
USGS 360005114443001 B-30-23 10CBB1 2008-07-15 2008-12-02 2
USGS 360007114441201 B-30-23 10CAA1 2008-02-27 2008-12-03 3
  group icon San Bernardino County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 09424150 COLORADO RIVER AQUEDUCT NEAR PARKER DAM, AZ-CA 1965-09-15 1978-09-05 156
USGS 09424170 GENE WASH BL GENE WASH RES N PARKER DAM AZ-CAL 1965-09-01 1969-07-16 13
USGS 09427500 LAKE HAVASU NEAR PARKER DAM, AZ-CA 1978-01-09 1978-06-26 2
USGS 342641114284301 004N024E17H001S 1978-08-03 1978-08-03 1
USGS 344300114310001 007N024E06N001S 2007-12-11 2022-10-26 7
USGS 344551114370901 008N023E30C007S 2007-12-18 2007-12-18 3
USGS 344608114353501 008N023E20J001S 1984-05-30 1984-05-30 1
USGS 345022114353601 009N023E29R001S 1984-05-30 1984-05-30 1
USGS 345041114361101 009N023E29F002S 2007-10-29 2007-10-29 3
USGS 345101114363401 009N023E30A003S 2007-10-30 2007-10-30 3
USGS 345421114380901 009N022E01F001S 1985-03-21 1985-03-21 1
USGS 345445114384201 010N022E35R001S 1985-03-20 1985-03-20 1
USGS 345645114391101 FORT MOJAVE TILE DRAIN CA 1977-11-14 1978-03-23 2
USGS 345709114401101 010N022E22B001S 1985-03-21 1985-03-21 1
USGS 345712114381001 FORT MOJAVE MAIN CA 1977-11-14 1978-09-11 4
USGS 345712114400801 FORT MOJAVE LAGOON SITE 2 CA 1978-01-26 1978-03-23 2
USGS 345813114401801 FORT MOJAVE LAGOON PUMP CA 1977-11-15 1978-03-23 2
USGS 345842114390601 010N022E11G001S 1980-06-18 1980-06-18 1
USGS 345905114393701 011N021E36Q001S 1963-06-19 1963-06-19 1
USGS 345941114383401 011N022E31C001S 1980-06-18 1980-06-18 1
USGS 345954114384801 011N022E30N001S 1962-05-01 1962-05-01 1
  group icon Clark County, Nevada
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 09421500 COLORADO RV BLW HOOVER DAM, AZ-NV 1946-01-11 2016-08-24 1062
USGS 09423000 COLORADO RIVER BELOW DAVIS DAM, AZ-NV 1969-07-31 2019-05-13 280
USGS 09423050 COLORADO RV LAGOON NORTH OF RIVIERA, AZ 1973-08-16 1991-11-25 33
USGS 09423060 COLORADO RV BLW LAGOON NORTH OF RIVIERA, AZ 1973-08-16 1991-11-25 33
USGS 350446114384501 213 S33 E66 17AAB 1 1984-05-30 1984-05-30 1
USGS 350703114380901 213 S32 E66 32AD 1 Big Bend Well 2 Area 2 1988-09-09 1988-09-09 1
USGS 350721114380301 213 S32 E66 32AA 1 Big Bend Well 1 Area 2 1985-06-12 1992-09-01 28
USGS 350910114344001 213 S32 E66 24BBA 1 1973-08-16 1988-11-22 38
USGS 350920114341901 213 S32 E66 13CDD 2 1973-08-16 1979-10-18 22
USGS 350930114351101 213 S32 E66 14DBDB1 Monitor Well 116 1989-08-11 1992-09-01 13
USGS 350931114341601 213 S32 E66 13AB 1 Big Bend Well 1 Area 1 1985-06-12 1992-09-01 29
USGS 350937114341501 213 S32 E66 13DBB 1 Riverside 1974-02-07 1983-10-04 24
USGS 351009114404201 213 S32 E65 12DDCB1 HIKO SPRINGS 2008-09-22 2010-01-04 3
USGS 351712114441201 213 S30 E65 33CDAD1 JE-2 2009-06-08 2010-08-09 2
USGS 352831114404601 Lake Mohave at Tequila Cove VOC sample site 1999-06-02 2006-11-02 9
USGS 352924114410601 213 S28 E65 24CBCD1 1979-10-15 1979-10-15 1
USGS 352927114410201 LAKE MOHAVE AT COTTONWOOD COVE 1979-10-15 1979-10-15 1
USGS 352936114405601 LAKE MOHAVE AT COTTONWOOD COVE VOC SAMPLE SITE 1999-06-02 2006-09-05 8
USGS 353628114472701 213 S27 E64 12CBD 1 1976-02-12 1976-02-12 1
USGS 354005114450801 213 S26 E65 20CAB 1 1976-03-30 1976-03-30 1
USGS 354209114504301 213 S26 E64 09BCA 1 2008-07-29 2008-07-29 1
USGS 354218114483601 213 S26 E64 11BBB 1 1976-02-10 1976-02-10 1
USGS 354218114484301 213 S26 E64 10AAA 1 1976-02-10 1976-02-10 1
USGS 354235114422801 LAKE MOHAVE AT NELSONS LANDING, NV 2005-06-17 2006-09-05 7
USGS 354240114504301 213 S26 E64 04CBCA1 1987-04-26 1987-04-26 1
USGS 354337114490901 213 S25 E64 34DBAB1 BRIDGE SPRING 1987-04-26 1987-04-26 1
USGS 355050114432201 213 S24 E65 22BCBA1 2009-09-10 2010-01-06 2
USGS 355621114440101 213 S23 E65 21CBC 1 2008-07-31 2008-12-04 2
USGS 355641114435301 213 S23 E65 21BCA 1 1976-01-15 1976-01-15 1
USGS 355718115103301 212 S23 E61 08DDCC1 LL 2008-07-28 2008-07-28 2
USGS 355756114443401 213 S23 E65 08CDD 1 1976-01-15 2008-12-04 3
USGS 355901114445001 213 S23 E65 05CBD 1 1976-01-15 1976-01-15 2
USGS 355902114444801 213 S23 E65 05CAB 1 2008-07-15 2008-12-01 2
USGS 355902114444802 213 S23 E65 05CAB 2 2008-07-15 2008-12-01 2
USGS 355903114444402 BOY SCOUT CYN (POOL) BLW HOOVER DAM, AZ-NV 2018-10-17 2019-05-13 4
USGS 355919114444301 213 S23 E65 05BDAB1 2009-04-15 2009-04-15 1
USGS 355956114444401 213 S22 E65 32CAAC1 2008-03-19 2019-06-19 7
USGS 360002114443201 213 S22 E65 32ACC 1 1976-02-11 2008-12-02 3
USGS 360010114443301 213 S22 E65 32BDA 1 1976-02-11 2009-05-05 3
USGS 360010114445801 213 S22 E65 32BCB 1 1976-01-15 1976-01-15 1
USGS 360036114444101 213 S22 E65 29CDA 1 PUPFISH COLD 2008-07-16 2008-07-16 1
USGS 360036114444102 213 S22 E65 29CDA 2 PUPFISH HOT 2008-03-19 2008-12-09 3
USGS 360046114443101 213 S22 E65 29DBB 1 1976-02-11 1976-02-11 1
USGS 360051114442801 213 S22 E65 29DBA 1 DAM SEEP 2008-07-16 2008-12-09 2