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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 56 sites found


Hydrologic unit = 12110109
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 Atascosa County, Texas
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 283852098351000 AL-78-20-703 1959-03-03 1964-08-27 2
USGS 284014098432300 AL-78-19-402 1944-06-03 1944-06-03 1
USGS 284103098380600 AL-78-11-801 1956-07-18 1956-07-18 1
USGS 284106098425900 AL-68-61-401 1944-06-05 1944-06-05 1
USGS 284136098453500 AL-78-18-601 1964-08-18 1977-06-10 6
USGS 284139098431500 AL-68-61-406 1932-06-19 1932-06-19 1
USGS 284206098425700 AL-78-19-401 1944-06-03 1944-06-03 1
USGS 284256098473100 AL-78-18-201 1932-06-19 1977-06-10 3
USGS 284313098461400 AL-78-18-301 1964-05-05 1964-05-05 1
USGS 284323098472400 AL-78-18-202 1944-05-11 1944-05-11 1
USGS 284336098363600 AL-78-20-101 1964-04-09 1964-04-09 1
USGS 284351098385200 AL-78-19-301 1964-08-18 1964-08-18 1
USGS 284445098390500 AL-68-61-209 1964-08-20 1964-08-20 1
USGS 284524098373300 AL-78-11-205 1964-08-26 1969-11-04 2
USGS 284953098455900 AL-78-10-602 1964-04-06 1964-04-06 1
USGS 285139098424700 AL-78-11-101 1960-02-18 1977-06-10 17
USGS 285550098441400 AL-78-03-409 1964-08-06 1964-08-06 1
USGS 285559098435200 AL-78-03-401 1944-06-02 1944-06-02 1
USGS 285620098434600 AL-78-03-408 1964-08-06 1964-08-06 1
USGS 285747098453800 AL-78-02-301 1964-04-06 1977-07-28 2
  group icon Bexar County, Texas
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 290751098243101 AY-68-53-911 (ASR 7) 2008-07-18 2008-07-18 1
USGS 290809098232301 AY-68-53-913 (ASR 9) 2008-07-18 2016-08-03 8
USGS 290838098241401 AY-68-53-9 (PO2) 2008-07-28 2015-08-06 8
USGS 290841098234001 AY-68-53-9 (PO1) 2008-07-28 2008-07-28 1
USGS 290844098243601 AY-68-53-9 (PO3) 2008-07-28 2008-07-28 1
  group icon Frio County, Texas
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 284423098484400 KB-78-18-204 1946-04-18 1946-04-18 1
USGS 284443098530000 KB-78-17-301 1952-06-17 1952-06-17 1
USGS 284623098555800 KB-78-09-801 1932-05-26 1932-05-26 1
USGS 284847098554500 KB-78-09-503 1964-08-13 1977-08-19 3
USGS 285308099042000 KB-77-08-806 1964-08-20 1964-08-20 1
USGS 290036098571200 KB-68-57-801 1932-06-18 1932-06-18 1
USGS 290109098544900 KB-68-57-907 1964-08-13 1969-07-15 2
  group icon Mcmullen County, Texas
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 08206700 San Miguel Ck nr Tilden, TX 1965-12-16 1983-10-04 64
USGS 283421098335200 SU-78-28-501 1959-03-05 1969-08-15 2
USGS 283423098322300 SU-78-28-603 1950-01-15 1959-03-25 2
USGS 283440098322500 SU-78-28-602 1950-01-15 1977-07-22 3
USGS 283455098305000 SU-78-28-601 1959-03-17 1977-06-22 3
USGS 283555098303600 SU-78-28-303 1963-05-21 1963-05-21 1
USGS 283602098351000 SU-78-28-101 1963-04-23 1977-06-22 5
USGS 283811098272100 SU-78-21-801 1959-03-23 1959-03-23 1
  group icon Medina County, Texas
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 290943098591201 TD-68-49-707 2008-05-27 2008-06-10 5
USGS 290955098562101 TD-68-49-813 (Devine) 1973-03-12 2006-12-22 20
USGS 291150098540001 TD-68-49-601 1959-08-26 1969-12-10 13
USGS 291219098565801 TD-68-49-501 1979-04-10 1979-04-10 1
USGS 291220098565701 TD-68-49-5 1984-07-16 1984-07-16 1
USGS 291231098565901 TD-68-49-201 1997-07-17 2018-05-17 6
USGS 291358098531901 TD-68-49-301 1997-07-17 2022-10-26 7
USGS 291538098521301 TD-68-42-702 1969-12-19 1969-12-19 1
USGS 291555098492401 TD-68-42-802 1955-06-07 1955-06-07 1
USGS 291611098511901 TD-68-42-7-- 1980-08-20 1980-08-20 1
USGS 291650098562001 TD-68-41-801 1968-11-05 1970-07-27 2
USGS 291750098592901 TD-68-41-401 1972-08-02 1972-08-02 1
USGS 291903098591101 TD-68-41-403 1951-11-16 1951-11-16 1
USGS 292022098554101 TD-68-41-202 1952-06-10 1952-06-10 1
USGS 292215098580201 TD-68-41-103 2005-05-09 2022-10-25 5
USGS 292319098574801 TD-68-33-701 1978-08-22 1990-06-04 6