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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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.
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Site Selection Results -- 59 sites found


Hydrologic unit = 12110208
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 Cameron County, Texas
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 08470200 N Floodway nr Sebastian, TX 1973-05-01 1983-02-27 16
USGS 08470335 Resaca De Los Fresnos at Hwy 77, San Benito, TX 1986-06-26 1986-06-26 1
USGS 08470400 Arroyo Colorado at Harlingen, TX 1986-11-20 2007-09-10 152
USGS 08470450 Arroyo Colorado abv Rio Hondo, TX 1986-06-25 2006-05-24 32
USGS 08470460 Arroyo Colorado at Port Harlingen nr Rio Hondo, TX 2006-02-22 2006-05-24 79
USGS 08470500 Arroyo Colorado at FM 106, Rio Hondo, TX 2006-02-22 2006-05-24 75
USGS 08470520 Arroyo Colorado at Camp Perry nr Rio Hondo, TX 2006-02-22 2006-05-24 76
USGS 08471005 Cayo Atascosa at Hwy 106 nr Rio Hondo, TX 1986-06-27 1986-08-05 2
USGS 08471010 Resaca De Los Cuates at Hwy 100 nr Russeltown, TX 1986-06-26 1986-06-26 1
USGS 08471030 Resaca De Los Cuates at Hwy 106 nr Rio Hondo, TX 1986-06-27 1986-08-05 2
USGS 08471040 Cayo Atascosa at Crsg 1, Laguna Atascosa NWR, TX 1986-06-27 1986-06-27 1
USGS 08471050 Cayo Atascosa at Crsg 2, Laguna Atascosa NWR, TX 1986-06-27 1986-06-27 1
USGS 08474550 Rio Grande at US Hwy 77, Brownsville, TX 1977-05-10 1981-12-02 55
USGS 255702097240600 1232002Laguna Madre ES Line 320 Site 02 1968-08-21 1975-06-03 67
USGS 255845097191800 1233402Laguna Madre ES Line 334 Site 02 1968-08-21 1975-06-03 63
USGS 255952097172400 1234302Laguna Madre ES Line 343 Site 02 1968-08-21 1982-03-29 99
USGS 260034097161000 1234802Laguna Madre ES Line 348 Site 02 1969-09-09 1969-09-09 6
USGS 260106097151000 1235102Laguna Madre ES Line 351 Site 02 1969-09-09 1978-06-27 77
USGS 260204097443701 BY-88-59-7xx2 2013-09-09 2013-09-09 3
USGS 260219097125000 1236402Laguna Madre ES Line 364 Site 02 1968-08-21 1974-04-23 37
USGS 260256097115100 1237002Laguna Madre ES Line 370 Site 02 1970-10-06 1975-06-03 44
USGS 260328097124300 1231302Laguna Madre ES Line 313 Site 02 1969-09-09 1975-06-03 45
USGS 260356097100000 1237602Laguna Madre ES Line 376 Site 02 1968-08-21 1976-08-25 54
USGS 260357097081000 1290195Laguna Madre ES Line 901 Site 95 1977-06-21 1981-03-25 18
USGS 260359097124300 1230102Laguna Madre ES Line 301 Site 02 1968-08-21 1975-06-03 42
USGS 260412097120600 1229702Laguna Madre ES Line 297 Site 02 1968-08-21 1975-06-03 35
USGS 260415096593000 1291095Laguna Madre ES Line 910 Site 95 1975-06-03 1975-06-03 6
USGS 260439097131000 1228704Laguna Madre ES Line 287 Site 04 1968-08-21 1982-03-29 46
USGS 260526097121000 1228702Laguna Madre ES Line 287 Site 02 1968-08-21 1982-03-29 41
USGS 260553097111200 1228701Laguna Madre ES Line 287 Site 01 1968-08-21 1982-03-29 35
USGS 260606097101101 Laguna Madre Site 1 nr South Padre Island, TX 2021-11-02 2022-04-28 6
USGS 260822097493401 La Feria Res PS Site nr La Feria, TX 1999-07-14 1999-07-14 1
USGS 261147097355700 1222302Laguna Madre ES Line 223 Site 02 1968-08-22 1975-06-03 38
USGS 261153097153400 1227403Laguna Madre ES Line 274 Site 03 1968-08-21 1982-03-29 73
USGS 261226097135700 1227402Laguna Madre ES Line 274 Site 02 1968-08-21 1982-03-29 46
USGS 261237097195001 Pelican Lk at Laguna Madre NWR, TX 1986-06-28 1986-06-28 1
USGS 261256097121800 1227401Laguna Madre ES Line 274 Site 01 1968-08-21 1982-03-29 32
USGS 261326097215801 Athel Pond at Laguna Atascosa NWR, TX 1986-06-28 1986-06-28 1
USGS 261410097231201 Laguna Atascosa at Laguna Atascosa NWR, TX 1986-06-27 1986-06-27 1
USGS 261656097331700 1223302Laguna Madre ES Line 233 Site 02 1968-08-22 1975-06-03 57
USGS 261922097182800 1226302Laguna Madre ES Line 263 Site 02 1968-08-22 1982-03-29 75
USGS 261929097264500 1224702Laguna Madre ES Line 247 Site 02 1968-08-22 1982-03-29 99
USGS 262112097194401 Laguna Madre ES nr mouth of Harlingen Channel 1986-06-25 1986-07-09 2
USGS 262132097203100 1225802Laguna Madre ES Line 258 Site 02 1968-08-22 1975-06-03 48
USGS 262423097204400 1221702Laguna Madre ES Line 217 Site 02 1968-08-22 1982-03-29 85
  group icon Hidalgo County, Texas
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 08470140 Main Floodway (Llano Grande) nr Progresso, TX 1986-06-24 1986-06-24 1
USGS 08470142 Llano Grande Lk nr Weslaco, TX 2001-07-03 2001-07-03 39
USGS 08470300 Arroyo Colorado at El Fuste Siphon nr Mercedes, TX 1967-09-26 1982-02-25 78
USGS 0847325106 Donna Canal Sta 3RB nr Donna, TX 2001-04-10 2001-04-10 1
USGS 260907098040301 Donna Res E Site nr Donna, TX 1999-07-13 1999-07-13 8
USGS 260912098040601 Donna Res PS Site nr Donna, TX 1999-07-13 1999-07-13 1
  group icon Willacy County, Texas
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 08470990 Arroyo Colorado nr mouth nr Arroyo City, TX 1986-06-25 1986-06-25 1
USGS 263037097232800 1220302Laguna Madre ES Line 203 Site 02 1968-08-22 1975-06-03 34
USGS 263115097213100 1220301Laguna Madre ES Line 203 Site 01 1968-08-22 1968-08-22 2
USGS 263323097253400 1219404Laguna Madre ES Line 194 Site 04 1968-08-20 1975-06-03 38
USGS 263331097242100 1219403Laguna Madre ES Line 194 Site 03 1968-08-20 1975-06-03 46
USGS 263344097200500 1219402Laguna Madre ES Line 194 Site 02 1968-08-20 1976-08-25 44
USGS 263354097163300 1219401Laguna Madre ES Line 194 Site 01 1968-08-20 1974-10-22 35
USGS 263415097144000 1290290Laguna Madre ES Line 902 Site 90 1979-04-11 1982-03-29 14