Watershed 77 Historic Well Levels, 1964-1995.

Metadata:

Identification_Information
Data_Quality_Information
Entity_and_Attribute_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Amatya, Devendra M. and Trettin, Carl C.
Publication_Date: 2012
Title:
Geospatial_Data_Presentation_Form: database

Description:

Abstract:: A network of 24 non-recording wells was installed in Watershed 77 on the Santee Experimental Forest between February 1963 and January 1964. The distribution of the wells was proportional to that of the soil types across the watershed. Monitoring of these wells was discontinued in 1971.

Another set of 42 non-recording wells was installed on Watershed 77 in 1992 (concurrent with the installation of a similar network on Watershed 80), two years after Hurricane Hugo had devastated the Santee Experimental Forest in September 1989. This network was monitored manually until early 1995, and recording datalogger/sensor units were installed in a subset of wells in December 1996.
Purpose:: The purpose of these networks of water table wells was to provide information on spatial and temporal variation in water table level across the first-order Watershed 77 and to increase knowledge about the relationship of water table to precipitation, runoff, evapotranspiration (ET) and other related hydrologic processes.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1964
Ending_Date: 1995

Currentness_Reference:

ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Description_of_Geographic_Extent:

The geographic area covered by the dataset is Watershed 77 in the Santee Experimental Forest.

Bounding_Coordinates:

West_Bounding_Coordinate: -79.78153
East_Bounding_Coordinate: -79.76300
North_Bounding_Coordinate: 33.15007
South_Bounding_Coordinate: 33.13284

Keywords:

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: Forested watersheds
Theme_Keyword: Water Table

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: South Carolina
Place_Keyword: Coastal Plain
Place_Keyword: Santee Experimental Forest
Place_Keyword: Watershed 77

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/.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: Manual measurement of the initial network of 24 wells was conducted approximately every two weeks using a steel tape and pen flashlight (measuring from the top of the well to the water surface).

The post-Hugo network of 42 wells was monitored in a similar manner.

Logical_Consistency_Report:

Visual inspection of electronically plotted water table data and comparison with precipitation data from other SEF stations was employed to expose anomalous values for the expected water table response to rainfall.

Completeness_Report:

As noted in the abstract, water table levels in the first well network were manually monitored approximately every two weeks between 1964 and 1971. Another network of wells was established in 1992, and it was monitored in a similar manner until 1995.

Lineage:

Methodology:

Methodology_Type: Field
Methodology_Description:: The 24 original wells were constructed using 1.5 inch diameter iron pipe with 0.25 to 0.375 inch holes drilled on all sides allowing for adequate equalization of water in each well. These wells were installed to a depth of 20 feet below ground surface, using a minute-man drill. One foot of each pipe was left protruding above ground surface, and tin cans were used to cap each well.

The 42 wells installed in 1992 were constructed with 1.5 inch diameter PVC pipe and were installed to a depth of 8-10 feet (or more) below ground surface.

Wells were visited approximately every two weeks and the distance from the top of the well to the water surface was measured with a steel tape and pen flashlight or similar measuring device (such as a Hydrolite).

Process_Step:

Process_Description:: Water level information was retrieved from field notebooks and recorded in databases (written and electronic) at the office. Using information about the height of individual wells above ground surface allowed for calculation and plotting of water table level below ground surface.
Process_Date: Unknown

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:: Variables included in the dataset WS77_historic_well_levels_rev2.xlsx:

Location = watershed name (WS77 = Watershed 77);
Instr_ID = well name (w17701 = pre-Hugo well number 1);
Date_ = date associated with water table data (format MM/DD/YYYY); and
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).

The form of the well ID numbers is whwwnn, where h is an indicator of pre Hurricane Hugo versus post Hurricane Hugo, ww is the watershed number, and nn is the well number. The values of h are 1 for pre Hugo, and 2 for post Hugo. The well numbers, nn,
are in two digit format, e.g. well numbers less than 10 are represented as 0n, as opposed to just n.

All missing data were originally assigned the value "-9999"; during database development this code was changed to "null"
Entity_and_Attribute_Detail_Citation:: None

Metadata_Reference_Information:

Metadata_Date: 20110721

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