Watershed 78 Rains Well Data, 2006-2016.

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Amatya, Devendra M. and Trettin, Carl C.
Publication_Date: 2016
Title:
Watershed 78 Rains Well Data, 2006-2016.
Geospatial_Data_Presentation_Form: database
Description:
Abstract:
On June 22, 2006 a new well was excavated in an area representative of the Rains soil series on the left bank of the stream draining Watershed 78 (the Turkey Creek Watershed). A Global Water WL16 pressure transducer (datalogger and linked sensor) was installed in the well, and shortly thereafter hourly measurements of water table level began.
Purpose:
The purpose of this well installation (and others occuring at about the same time) was to obtain detailed spatial information about changes in water table level over time at locations representative of various dominant soil series on Watershed 78, and to increase knowledge about the relationship of water table to precipitation, runoff, evapotranspiration (ET) and other related eco-hydrologic and biogeochemical processes.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2006
Ending_Date: 2016
Currentness_Reference:
ground condition
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
The geographic area covered by the dataset is the Rains Well on Watershed 78 (the Turkey Creek Watershed).
Bounding_Coordinates:
West_Bounding_Coordinate: -79.78698
East_Bounding_Coordinate: -79.65885
North_Bounding_Coordinate: 33.15307
South_Bounding_Coordinate: 33.08453
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Forested watersheds
Theme_Keyword: Water Table
Theme_Keyword: Rains soil series
Theme_Keyword: pressure transducer
Theme_Keyword: WL16
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: South Carolina
Place_Keyword: Coastal Plain
Place_Keyword: Watershed 78
Place_Keyword: Turkey Creek Watershed
Access_Constraints: None
Use_Constraints:
These data were collected by USDA Forest Service researchers. In order to use the data in a publication, presentation or other research product you must agree to acknowledge its source. Please use the reference below when citing this work:

(Data name) courtesy of the USDA Forest Service Center for Forested Wetlands Research.

The following statement may be added after an acknowledgement or credit:

The USDA Forest Service Center for Forested Wetlands Research homepage is http://www.srs.fs.usda.gov/charleston/.
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Original water level measurements were in feet above the pressure transducer (with a precision of 0.01 feet). These measurements were later converted to centimeters below ground surface.
Logical_Consistency_Report:
Visual inspection of electronically plotted water table data and comparison with precipitation data from the Turkey Creek weather station on this watershed was employed to expose anomalous values for the expected water table response to rainfall.
Completeness_Report:
Hourly measurements were recorded by the datalogger, except during the occasional battery failure or equipment malfunction.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
On June 22, 2006 the Rains Well was installed using a manufactured Blue Tip well point following standard installation procedures. An auger was used to bore a hole approximately 7.6 centimeters (cm) in diameter, the screen and riser pipe were placed into the hole, and a gravel pack was added around the pipe along the screened section and up to about 15 cm below the ground surface. Bentonite clay was added to the top 15 cm of the bore hole as a seal to prevent percolation of surface water. Total well depth was approximately 2.44 meters below ground surface.

A Global Water WL16 pressure transducer (datalogger and linked sensor) was immediately installed in the well, and the datalogger was set to record water level every hour. The well was purged on 7/12/06 at 11:20.

The well was visited approximately every four weeks and the most recently acquired data was downloaded to a laptop computer using Global Logger II software. Water level readings were manually checked by using a Hydrolite device inside the well after removing the WL16 unit. Starting in May 2009 this measurement was performed using a Solinst Mini 101 water level meter.

The WL16 unit was field calibrated on 12/17/08.

The WL16 unit was field calibrated on 12/10/09.

The WL16 unit was removed from the well on 3/16/10 in advance of a prescribed burn on Watershed 78, then recalibrated in the office and reinstalled in the well on 3/19/10.

The WL16 unit was field calibrated on 11/15/10.

The WL16 unit was field calibrated on 11/17/11.

The WL16 unit was removed from the well on 3/16/12 in advance of a prescribed burn on Watershed 78, then recalibrated in the office and reinstalled in the well (with a new pvc riser pipe) on 3/20/12.

The WL16 unit was field calibrated on 7/20/12; crack in pvc riser repaired and well purged 3-4 times.

Attempt to field calibrate WL16 unit on 10/10/12 was unsuccessful; unit removed and replaced by another WL16 on 10/11/12.

Observed PVC riser lying on its side on 8/20/13; WL16 functional and downloaded immediately after brief rain shower.

Could not connect to WL16 datalogger on 9/10/14, because both batteries were dead. Installed replacement WL16 unit on 9/17/14; all data from 7/15/14 to 9/17/14 was lost.
Process_Step:
Process_Description:
Water level data was transferred to an electronic database at the office. Using information about the height of the well above ground surface allowed for calculation and plotting of water table level below ground surface (in centimeters).
Process_Date: Unknown
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Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Location = watershed name (WS78 = Watershed 78);
Instr_ID = instrument name (Rains = datalogger/sensor unit in Rains Well);
Date_time = instantaneous date and time associated with water table data (format MM/DD/YYYY HH:MM);
Date_ = date associated with water table data (format MM/DD/YYYY);
Time24_ = nearest hour associated with water table data (0-23), in hours;
Depth_cm_b (alias 'Depth below ground surface') = depth, cm below ground surface, in cm (positive values represent levels above ground surface and negative values represent levels below ground surface); and
Sample_Int = sample interval, in hours.

All missing data were originally assigned the value "-9999"; during database development this code was changed to "null"

Depths below ground surface for periods where the water table was below the detection limit of the sensor have been assigned the value "dry"
Entity_and_Attribute_Detail_Citation:
None
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Metadata_Reference_Information:
Metadata_Date: 20160212
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service, Southern Research Station, Center for Forested Wetlands Research
Contact_Person: Andy Harrison
Contact_Position: Hydrology Technician
Contact_Address:
Address_Type: mailing and physical
Address: 3734 Hwy 402
City: Cordesville
State_or_Province: SC
Postal_Code: 29434
Country: USA
Contact_Voice_Telephone: 843 336-5603
Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001.1-1999
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