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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 330205096285801 Lavon Lk at Raw Water Intake #1

Collin County, Texas
Hydrologic Unit Code 12030106
Latitude  33°02'05.1", Longitude  96°28'58.4" NAD83
Gage datum 472 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 735 2011-07-06 2023-10-05 Sampling depth, feet
00010 735 2011-07-06 2023-10-05 Temperature, water, degrees Celsius
00020 93 2011-07-06 2023-10-05 Temperature, air, degrees Celsius
00025 735 2011-07-06 2023-10-05 Barometric pressure, millimeters of mercury
00035 93 2011-07-06 2023-10-05 Wind speed, miles per hour
00036 54 2011-07-06 2023-10-05 Wind direction, degrees clockwise from true north
00062 85 2011-07-06 2023-10-05 Elevation of reservoir water surface above datum, feet
00095 735 2011-07-06 2023-10-05 Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
00191 735 2011-07-06 2023-10-05 Hydrogen ion, water, unfiltered, calculated, milligrams per liter
00300 735 2011-07-06 2023-10-05 Dissolved oxygen, water, unfiltered, milligrams per liter
00301 735 2011-07-06 2023-10-05 Dissolved oxygen, water, unfiltered, percent of saturation
00400 735 2011-07-06 2023-10-05 pH, water, unfiltered, field, standard units
32000 65 2011-07-06 2023-10-05 Sample volume, liters
32318 15 2011-07-06 2023-10-05 Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, micrograms per liter
32319 15 2011-07-06 2023-10-05 Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin
32320 15 2011-07-06 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 2011-07-06 2023-10-05 Phycocyanin relative fluorescence (fPC), water, in situ, relative fluorescence units (RFU)
49701 92 2011-07-06 2023-10-05 Transparency, water, in situ, Secchi disc, feet
63680 15 2011-07-06 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 37 2011-07-06 2023-10-05 Sample purpose, code
82398 37 2011-07-06 2023-10-05 Sampling method, code
84164 37 2011-07-06 2023-10-05 Sampler type, code
94424 53 2011-07-06 2023-10-05 Dreissena polymorpha (Pallas, 1771) adults, number per square meter
94425 93 2011-07-06 2023-10-05 Dreissena polymorpha (Pallas, 1771) larvae, number per liter
94428 50 2011-07-06 2023-10-05 Zebra mussel Dreissena polymorpha (Pallas, 1771) rDNA ITS 2 gene, water, DNA based, recoverable, copies per liter
99111 378 2011-07-06 2023-10-05 Type of quality assurance data associated with sample, code
99988 15 2011-07-06 2023-10-05 Photosynthetically active radiation (average flux density on a horizontal surface during measurement interval), micromoles of photons per square meter per second