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Water Quality Samples for the Nation

! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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.

USGS 330937096260501 Lavon Lk nr US380

Collin County, Texas
Hydrologic Unit Code 12030106
Latitude  33°09'37", Longitude  96°26'05.2" NAD83
Gage datum 479 feet above NAVD88
Output formats
Parameter Group Period of Record table
Inventory of available water-quality data for printing
Inventory of water-quality data with retrieval
Tab-separated data, one result per row
Tab-separated data one sample per row with remark codes combined with values
Tab-separated data one sample per row with tab-delimiter for remark codes
Reselect output format
Parameter
Code
Count Begin
Date
End
Date
Parameter Code Complete Name
00003 50 2011-05-16 2019-08-22 Sampling depth, feet
00010 50 2011-05-16 2019-08-22 Temperature, water, degrees Celsius
00020 17 2011-05-16 2019-08-22 Temperature, air, degrees Celsius
00025 50 2011-05-16 2019-08-22 Barometric pressure, millimeters of mercury
00035 15 2011-05-16 2019-08-22 Wind speed, miles per hour
00036 2 2011-05-16 2019-08-22 Wind direction, degrees clockwise from true north
00062 10 2011-05-16 2019-08-22 Elevation of reservoir water surface above datum, feet
00063 2 2011-05-16 2019-08-22 Number of sampling points, count
00095 50 2011-05-16 2019-08-22 Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
00191 50 2011-05-16 2019-08-22 Hydrogen ion, water, unfiltered, calculated, milligrams per liter
00300 50 2011-05-16 2019-08-22 Dissolved oxygen, water, unfiltered, milligrams per liter
00301 50 2011-05-16 2019-08-22 Dissolved oxygen, water, unfiltered, percent of saturation
00400 50 2011-05-16 2019-08-22 pH, water, unfiltered, field, standard units
00403 10 2011-05-16 2019-08-22 pH, water, unfiltered, laboratory, standard units
00405 10 2011-05-16 2019-08-22 Carbon dioxide, water, unfiltered, milligrams per liter
00452 10 2011-05-16 2019-08-22 Carbonate, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter
00453 10 2011-05-16 2019-08-22 Bicarbonate, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter
00605 10 2011-05-16 2019-08-22 Organic nitrogen, water, unfiltered, milligrams per liter as nitrogen
00608 10 2011-05-16 2019-08-22 Ammonia (NH3 + NH4+), water, filtered, milligrams per liter as nitrogen
00613 10 2011-05-16 2019-08-22 Nitrite, water, filtered, milligrams per liter as nitrogen
00618 10 2011-05-16 2019-08-22 Nitrate, water, filtered, milligrams per liter as nitrogen
00631 10 2011-05-16 2019-08-22 Nitrate plus nitrite, water, filtered, milligrams per liter as nitrogen
00660 10 2011-05-16 2019-08-22 Orthophosphate, water, filtered, milligrams per liter as PO4
00665 10 2011-05-16 2019-08-22 Phosphorus, water, unfiltered, milligrams per liter as phosphorus
00671 10 2011-05-16 2019-08-22 Orthophosphate, water, filtered, milligrams per liter as phosphorus
00900 10 2011-05-16 2019-08-22 Hardness, water, milligrams per liter as calcium carbonate
00904 10 2011-05-16 2019-08-22 Noncarbonate hardness, water, filtered, field, milligrams per liter as calcium carbonate
00915 10 2011-05-16 2019-08-22 Calcium, water, filtered, milligrams per liter
00925 10 2011-05-16 2019-08-22 Magnesium, water, filtered, milligrams per liter
00930 10 2011-05-16 2019-08-22 Sodium, water, filtered, milligrams per liter
00931 10 2011-05-16 2019-08-22 Sodium adsorption ratio (SAR), water, number
00932 10 2011-05-16 2019-08-22 Sodium fraction of cations, water, percent in equivalents of major cations
00935 10 2011-05-16 2019-08-22 Potassium, water, filtered, milligrams per liter
00940 10 2011-05-16 2019-08-22 Chloride, water, filtered, milligrams per liter
00945 10 2011-05-16 2019-08-22 Sulfate, water, filtered, milligrams per liter
00950 10 2011-05-16 2019-08-22 Fluoride, water, filtered, milligrams per liter
00955 10 2011-05-16 2019-08-22 Silica, water, filtered, milligrams per liter as SiO2
32000 2 2011-05-16 2019-08-22 Sample volume, liters
39086 10 2011-05-16 2019-08-22 Alkalinity, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter as calcium carbonate
49701 16 2011-05-16 2019-08-22 Transparency, water, in situ, Secchi disc, feet
50280 2 2011-05-16 2019-08-22 Site visit purpose, code
62855 10 2011-05-16 2019-08-22 Total nitrogen [nitrate + nitrite + ammonia + organic-N], water, unfiltered, analytically determined, milligrams per liter
70301 10 2011-05-16 2019-08-22 Dissolved solids, water, filtered, sum of constituents, milligrams per liter
70303 10 2011-05-16 2019-08-22 Dissolved solids, water, filtered, short tons per acre-foot
71846 10 2011-05-16 2019-08-22 Ammonia (NH3 + NH4+), water, filtered, milligrams per liter as NH4
71851 10 2011-05-16 2019-08-22 Nitrate, water, filtered, milligrams per liter as nitrate
71856 10 2011-05-16 2019-08-22 Nitrite, water, filtered, milligrams per liter as nitrite
71999 2 2011-05-16 2019-08-22 Sample purpose, code
82398 2 2011-05-16 2019-08-22 Sampling method, code
84164 2 2011-05-16 2019-08-22 Sampler type, code
90095 10 2011-05-16 2019-08-22 Specific conductance, water, unfiltered, laboratory, microsiemens per centimeter at 25 degrees Celsius
94424 1 2011-05-16 2019-08-22 Dreissena polymorpha (Pallas, 1771) adults, number per square meter
94425 13 2011-05-16 2019-08-22 Dreissena polymorpha (Pallas, 1771) larvae, number per liter
99111 6 2011-05-16 2019-08-22 Type of quality assurance data associated with sample, code
99156 2 2011-05-16 2019-08-22 Sulfuric acid NWIS lot number, 4.5 N (1:7), 1 mL, National Field Supply Service (NFSS) stock number Q438FLD
99159 2 2011-05-16 2019-08-22 Nitric acid NWIS lot number, 7.5-7.7 N, 2 mL, National Field Supply Service (NFSS) stock number Q436FLD
99174 2 2011-05-16 2019-08-22 Sulfuric acid titrant NWIS lot number, 0.16 N, cartridge, National Field Supply Service (NFSS) stock number Q142FLD
99206 2 2011-05-16 2019-08-22 NWIS lot number, capsule filter, 0.45 micron