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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 330223096314700 Lavon Lk nr Collin Pk Marina nr Lavon, TX

Collin County, Texas
Hydrologic Unit Code 12030106
Latitude  33°02'23.43", Longitude  96°31'47.36" NAD83
Gage datum 473 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 392 2011-06-07 2023-10-05 Sampling depth, feet
00010 392 2011-06-07 2023-10-05 Temperature, water, degrees Celsius
00020 95 2011-06-07 2023-10-05 Temperature, air, degrees Celsius
00025 392 2011-06-07 2023-10-05 Barometric pressure, millimeters of mercury
00035 95 2011-06-07 2023-10-05 Wind speed, miles per hour
00036 52 2011-06-07 2023-10-05 Wind direction, degrees clockwise from true north
00062 85 2011-06-07 2023-10-05 Elevation of reservoir water surface above datum, feet
00095 392 2011-06-07 2023-10-05 Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
00191 392 2011-06-07 2023-10-05 Hydrogen ion, water, unfiltered, calculated, milligrams per liter
00300 392 2011-06-07 2023-10-05 Dissolved oxygen, water, unfiltered, milligrams per liter
00301 392 2011-06-07 2023-10-05 Dissolved oxygen, water, unfiltered, percent of saturation
00400 392 2011-06-07 2023-10-05 pH, water, unfiltered, field, standard units
32000 61 2011-06-07 2023-10-05 Sample volume, liters
32318 15 2011-06-07 2023-10-05 Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, micrograms per liter
32319 15 2011-06-07 2023-10-05 Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin
32320 15 2011-06-07 2023-10-05 Chlorophyll fluorescence (fChl), water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, relative fluorescence units (RFU)
32321 15 2011-06-07 2023-10-05 Phycocyanin relative fluorescence (fPC), water, in situ, relative fluorescence units (RFU)
49701 94 2011-06-07 2023-10-05 Transparency, water, in situ, Secchi disc, feet
63680 15 2011-06-07 2023-10-05 Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)
71999 18 2011-06-07 2023-10-05 Sample purpose, code
82398 18 2011-06-07 2023-10-05 Sampling method, code
84164 18 2011-06-07 2023-10-05 Sampler type, code
94424 58 2011-06-07 2023-10-05 Dreissena polymorpha (Pallas, 1771) adults, number per square meter
94425 95 2011-06-07 2023-10-05 Dreissena polymorpha (Pallas, 1771) larvae, number per liter
94428 32 2011-06-07 2023-10-05 Zebra mussel Dreissena polymorpha (Pallas, 1771) rDNA ITS 2 gene, water, DNA based, recoverable, copies per liter
94429 1 2011-06-07 2023-10-05 Zebra mussel Dreissena polymorpha (Pallas, 1771) shell length, larvae, average, micrometers
99111 200 2011-06-07 2023-10-05 Type of quality assurance data associated with sample, code
99988 15 2011-06-07 2023-10-05 Photosynthetically active radiation (average flux density on a horizontal surface during measurement interval), micromoles of photons per square meter per second