USGS Home
Contact USGS
Search USGS

National Water Information System: Web Interface

USGS Water Resources   

Data Category:
Home Current Conditions Site Information Mapper Surface Water Groundwater Water Quality Water Use Revisions Geographic Area:
United States Alabama Alaska American Samoa Arizona Arkansas British Columbia California Canton and Enderbury Islands Colorado Connecticut Delaware Dist. of Columbia Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa Johnston Atoll Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Midway Islands Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Northern Mariana Islands Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island Ryukyu Islands, Southern South Carolina South Dakota Swan Islands Tennessee Texas Trust Territories, Pacific Is U.S.Misc Caribbean Islands U.S.Misc Pacific Islands Utah Vermont Virgin Islands Virginia Wake Island Washington West Virginia Wisconsin Wyoming

Page Loading - Please Wait...

DESCRIPTION:

Latitude 40°19'34.3",   Longitude 89°54'17.2"   NAD83
Mason County, Illinois   , Hydrologic Unit 071300030507

Well depth: 10.2 feet
Land surface altitude: 468.15 feet above NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2022-10-06	2025-08-28
Daily Data
Temperature, water, degrees Celsius	2022-10-07	2025-08-27	3147
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2022-10-07	2025-08-27	3144
Dissolved oxygen, water, unfiltered, milligrams per liter	2022-10-07	2025-08-27	3141
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2022-10-24	2023-02-21	360
Daily Statistics
Temperature, water, degrees Celsius	2022-10-07	2025-06-23	984
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2022-10-07	2025-03-24	892
Dissolved oxygen, water, unfiltered, milligrams per liter	2022-10-07	2025-03-24	893
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2022-10-24	2023-02-21	120
Monthly Statistics
Temperature, water, degrees Celsius	2022-10	2025-06
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2022-10	2025-03
Dissolved oxygen, water, unfiltered, milligrams per liter	2022-10	2025-03
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2022-10	2023-02
Annual Statistics
Temperature, water, degrees Celsius	2023	2025
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2023	2025
Dissolved oxygen, water, unfiltered, milligrams per liter	2023	2025
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2023	2023
Field groundwater-level measurements	2022-10-05	2024-08-09	14
Water-Year Summary	2023	2024	2
Revisions	Loading...

OPERATION:

Record for this site is maintained by the USGS Illinois Water Science Center

Email questions about this site to Illinois Water Science Center Water-Data Inquiries