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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 332239097020000 Ray Roberts Lk at SPk-Isle du Bois nr Pilot Pt, TX

Denton County, Texas
Hydrologic Unit Code 12030103
Latitude  33°22'39.68", Longitude  97°02'00.2" NAD83
Gage datum 601.00 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 559 2011-10-24 2023-09-18 Sampling depth, feet
00010 559 2011-10-24 2023-09-18 Temperature, water, degrees Celsius
00020 69 2011-10-24 2023-09-18 Temperature, air, degrees Celsius
00025 553 2011-10-24 2023-09-18 Barometric pressure, millimeters of mercury
00035 69 2011-10-24 2023-09-18 Wind speed, miles per hour
00036 39 2011-10-24 2023-09-18 Wind direction, degrees clockwise from true north
00062 66 2011-10-24 2023-09-18 Elevation of reservoir water surface above datum, feet
00095 559 2011-10-24 2023-09-18 Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
00191 559 2011-10-24 2023-09-18 Hydrogen ion, water, unfiltered, calculated, milligrams per liter
00300 559 2011-10-24 2023-09-18 Dissolved oxygen, water, unfiltered, milligrams per liter
00301 553 2011-10-24 2023-09-18 Dissolved oxygen, water, unfiltered, percent of saturation
00400 559 2011-10-24 2023-09-18 pH, water, unfiltered, field, standard units
32000 44 2011-10-24 2023-09-18 Sample volume, liters
49701 69 2011-10-24 2023-09-18 Transparency, water, in situ, Secchi disc, feet
71999 9 2011-10-24 2023-09-18 Sample purpose, code
82398 9 2011-10-24 2023-09-18 Sampling method, code
84164 9 2011-10-24 2023-09-18 Sampler type, code
94424 18 2011-10-24 2023-09-18 Dreissena polymorpha (Pallas, 1771) adults, number per square meter
94425 69 2011-10-24 2023-09-18 Dreissena polymorpha (Pallas, 1771) larvae, number per liter
94429 50 2011-10-24 2023-09-18 Zebra mussel Dreissena polymorpha (Pallas, 1771) shell length, larvae, average, micrometers
94430 7 2011-10-24 2023-09-18 Zebra mussel Dreissena polymorpha (Pallas, 1771) shell length, adult, average, millimeters
99111 255 2011-10-24 2023-09-18 Type of quality assurance data associated with sample, code