Selected aquifer-test and specific-capacity data for wells in the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Arnold, L.R.
Publication_Date: 2010
Title:
Selected aquifer-test and specific-capacity data for wells in the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: U.S. Geological Survey Data Series
Issue_Identification: 507
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Suvey
Online_Linkage: <http://water.usgs.gov/lookup/getspatial?ds507_welltest_data>
Larger_Work_Citation:
Citation_Information:
Originator: Arnold, L.R.
Publication_Date: 2010
Title:
Geographic information datasets of regolith-thickness data, regolith-thickness contours, raster-based regolith thickness, and aquifer-test and specific-capacity data for the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Data Series
Issue_Identification: 507
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Arnold, L.R., Geographic information datasets of regolith-thickness data, regolith-thickness contours, raster-based regolith thickness, and aquifer-test and specific-capacity data for the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado: U.S. Geological Survey Data Series 507.
Online_Linkage: <http://pubs.usgs.gov/ds/507/>
Larger_Work_Citation:
Citation_Information:
Originator: Arnold, L.R.
Publication_Date: 2010
Title:
Hydrogeology and steady-state numerical simulation of groundwater flow in the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Scientific-Investigations Report
Issue_Identification: 2010-5082
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Arnold, L.R., Hydrogeology and steady-state numerical simulation of groundwater flow in the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado: U.S. Geological Survey Scientific-Investigations Report 2010-5082.
Online_Linkage: <http://pubs.usgs.gov/sir/2010/5082/>
Description:
Abstract:
This point dataset contains estimates of aquifer transmissivity and hydraulic conductivity at selected well locations in the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado. This dataset also contains hydrologic information used to estimate transmissivity from specific capacity at selected well locations. Data were compiled from published reports, consultant reports, and from well-test records on file with the U.S. Geological Survey and Colorado Division of Water Resources. The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Geological Survey and the Lost Creek Ground Water Management District.
Purpose:
This dataset is 1 of 4 datasets (see cross references) developed in support of U.S. Geological Survey Scientific-Investigations Report 2010-5082. This dataset was created to provide information about estimated aquifer transmissivity and hydraulic conductivity in the Lost Creek Designated Ground Water Basin.
Supplemental_Information:
The Lost Creek Designated Ground Water Basin is an alluvial valley-fill aquifer in northeastern Colorado that is an important water source for irrigation, municipal, and domestic uses.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2010
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -104.488085
East_Bounding_Coordinate: -104.234679
North_Bounding_Coordinate: 40.257191
South_Bounding_Coordinate: 39.940500
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: inlandWaters
Theme_Keyword: aquifer
Theme_Keyword: transmissivity
Theme_Keyword: hydraulic conductivity
Theme_Keyword: saturated thickness
Place:
Place_Keyword_Thesaurus: Getty Thesaurus of Geographic Names
Place_Keyword: Lost Creek
Place_Keyword: Weld County
Place_Keyword: Adams County
Place_Keyword: Arapahoe County
Place_Keyword: Colorado
Stratum:
Stratum_Keyword_Thesaurus: Dictionary of Geologic Terms
Stratum_Keyword: groundwater
Stratum_Keyword: basin
Access_Constraints: None.
Use_Constraints: None.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: L.R. Arnold
Contact_Position: Hydrologist
Contact_Address:
Address_Type: mailing address
Address: Denver Federal Center
Address: Colorado Water Science Center
Address: P.O. Box 25046, MS 415
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Country: USA
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact_Electronic_Mail_Address:
<http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+ds507_welltest_data>
Security_Information:
Security_Classification_System: Department of the Interior
Security_Classification: Unclassified
Security_Handling_Description: Data are published and available online.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500
Cross_Reference:
Citation_Information:
Originator: Arnold, L.R.
Publication_Date: 2010
Title:
Selected geologic data for wells and test holes in and near the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: U.S. Geological Survey Data Series
Issue_Identification: 507
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://water.usgs.gov/lookup/getspatial?ds507_regolith_data>
Cross_Reference:
Citation_Information:
Originator: Arnold, L.R.
Publication_Date: 2010
Title:
Contours of equal regolith thickness for the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: U.S. Geological Survey Data Series
Issue_Identification: 507
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Suvey
Online_Linkage: <http://water.usgs.gov/lookup/getspatial?ds507_regthick_contours>
Cross_Reference:
Citation_Information:
Originator: Arnold, L.R.
Publication_Date: 2010
Title:
Raster-based regolith thickness of the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: U.S. Geological Survey Data Series
Issue_Identification: 507
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://water.usgs.gov/lookup/getspatial?ds507_regthk>

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Aquifer-test data were compiled from Bjorklund and Brown (1957), Skinner (1963), Wilson (1965), Nelson, Haley, Patterson, and Quirk, Inc. (1967), JR Engineering, written commun. (2005), and HRS Water Consultants, Inc., written commun. (2006). Specific-capacity data were compiled from well-test records on file with the U.S. Geological Survey Colorado Water Science Center and the Colorado Division of Water Resources.
Location information has variable accuracy depending on the data source.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: unknown
Attribute_Accuracy_Explanation:
Accuracy of aquifer-test and specific-capactiy data reported by the original data source (specified in the SOURCE attribute field) is unknown.
Logical_Consistency_Report:
Point data attributes for this dataset are consistent in meaning, although the attribute information was derived from multiple sources, as indicated by the SOURCE attribute. All points in the dataset were processed by a single individual to ensure data consistency over the dataset extent.
Completeness_Report:
Data were digitized and plotted manually on-screen based on location information provided by the data source. Digital raster graphic topographic maps having a scale of 1:24,000 with a contour interval of 10 feet were used to determine approximate site locations.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal accuracy is variable. Data were plotted using Public Land Survey System descriptions and 1:24,000 Digital Raster Graphics. Data from the Colorado Division of Water Resources generally are assumed to be accurately located because, in most cases, they were plotted using reported distances from section lines. Data from HRS Water Consultants, Inc. also are assumed to be accurately located because they were plotted using detailed location information provided by the data source. For other data, locations generally were described to the nearest quarter-quarter-quarter section. Ancillary location information provided by the data source (if available) was used to refine data locations. In cases where ancillary information was not available, data were plotted near the center of the nearest quarter described by the data source.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 330
Horizontal_Positional_Accuracy_Explanation:
Maximum horizontal error is estimated as about 660 feet for wells plotted to the nearest quarter-quarter section. However, horizontal accuracy of other points is estimated as better than about 330 ft (1/4, 1/4, 1/4 section). Accuracy is estimated on the basis of reported Public Land Survey Sytem (PLSS) accuracy (number of quarters provided by original source).
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Not applicable.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 0
Vertical_Positional_Accuracy_Explanation:
0 used as placeholder for null - vertical accuracy is not applicable to this dataset.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1957
Title:
Geology and ground-water resources of the lower South Platte River valley between Hardin, Colorado, and Paxton, Nebraska
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: U.S. Geological Survey Water-Supply Paper
Issue_Identification: 1378
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Bjorklund, L.J., and Brown, R.F., 1957, Geology and ground-water resources of the lower South Platte River valley between Hardin, Colorado, and Paxton, Nebraska: U.S. Geological Survey Water-Supply Paper 1378, 431 p., 4 pls.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1957
Source_Currentness_Reference: geologic condition
Source_Citation_Abbreviation: Bjorklund and Brown, 1957
Source_Contribution:
Source for well location, test date, specific capacity, transmissivity, saturated thickness, and hydraulic conductivity.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Nelson, Haley, Patterson, and Quirk, Inc.
Publication_Date: 1967
Title:
Ground water resources of the Lost Creek drainage basin, Weld, Adams, and Arapahoe Counties, Colorado
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: none
Issue_Identification: none
Publication_Information:
Publication_Place: unpublished
Publisher: unpublished
Other_Citation_Details:
Nelson, Haley, Patterson, and Quirk, Inc., 1967, Ground water resources of the Lost Creek drainage basin, Weld, Adams, and Arapahoe Counties, Colorado: Report prepared for the Colorado Ground Water Commission, 32 p., 3 pls.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1967
Source_Currentness_Reference: geologic condition
Source_Citation_Abbreviation: NHPQ, 1967
Source_Contribution:
Source for well location, test date, specific capacity, transmissivity, saturated thickness, and hydraulic conductivity.
Source_Information:
Source_Citation:
Citation_Information:
Originator: HRS Water Consultants, Inc.
Publication_Date: 2006
Title: HRS Water Consultants, Inc., written communication
Series_Information:
Series_Name: none
Issue_Identification: none
Publication_Information:
Publication_Place: unpublished
Publisher: unpublished
Other_Citation_Details: HRS Water Consultants, Inc., written commun. (2006)
Type_of_Source_Media: written communication
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1997
Source_Currentness_Reference: geologic condition
Source_Citation_Abbreviation: HRS, 2006
Source_Contribution:
Source for well location, test date, specific capacity, transmissivity, saturated thickness, and hydraulic conductivity.
Source_Information:
Source_Citation:
Citation_Information:
Originator: JR Engineering
Publication_Date: 2005
Title: JR Engineering, written communication
Series_Information:
Series_Name: none
Issue_Identification: none
Publication_Information:
Publication_Place: unpublished
Publisher: unpublished
Other_Citation_Details: JR Engineering, written commun. (2005)
Type_of_Source_Media: written communication
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1990
Source_Currentness_Reference: geologic condition
Source_Citation_Abbreviation: JR Engineering, 2005
Source_Contribution:
Source for well location, test date, specific capacity, transmissivity, saturated thickness, and hydraulic conductivity.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Colorado Agricultural Experiment Station
Publication_Date: 1963
Title:
Artificial ground-water recharge in the Prospect Valley area, Colorado
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: General Series
Issue_Identification: 792
Publication_Information:
Publication_Place: Fort Collins
Publisher: Colorado Agricultural Experiment Station
Other_Citation_Details:
Skinner, M.M., 1963, Artificial ground-water recharge in the Prospect Valley area, Colorado: Colorado Agricultural Experiment Station General Series 792, 89 p.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1963
Source_Currentness_Reference: geologic condition
Source_Citation_Abbreviation: Skinner, 1963
Source_Contribution:
Source for well location, specific capacity, transmissivity, saturated thickness, and hydraulic conductivity.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Colorado Division of Water Resources
Publication_Date: unpublished material
Title: Colorado Division of Water Resources well-permit database
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: none
Issue_Identification: none
Publication_Information:
Publication_Place: unpublished publically available data
Publisher: unpublished publically available data
Other_Citation_Details: Colorado Division of Water Resources well-permit database.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2009
Source_Currentness_Reference: geologic condition
Source_Citation_Abbreviation: CDWR
Source_Contribution:
Source for well location, test date, rate, drawdown, saturated thickness (screen length).
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: unpublished material
Title: U.S. Geological Survey well records
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: none
Issue_Identification: none
Publication_Information:
Publication_Place: unpublished publicly available data
Publisher: unpublished publicly available data
Other_Citation_Details:
U.S. Geological Survey well records, available from the Colorado Water Science Center.
Online_Linkage: <http://co.water.usgs.gov/Website/projects/viewer.htm>
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2009
Source_Currentness_Reference: geologic condition
Source_Citation_Abbreviation: USGS
Source_Contribution:
Source for well location, test date, rate, drawdown, saturated thickness (screen length).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Colorado Water Conservation Board
Publication_Date: 1965
Title: Pumping tests in Colorado
Series_Information:
Series_Name: Ground Water Circular
Issue_Identification: 11
Publication_Information:
Publication_Place: Denver, CO
Publisher: Colorado Water Conservation Board
Other_Citation_Details:
Wilson, W.W., 1965, Pumping tests in Colorado: Denver, Colorado Water Conservation Board Ground Water Circular 11, 361 p.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1965
Source_Currentness_Reference: geologic condition
Source_Citation_Abbreviation: Wilson, 1965
Source_Contribution:
Source for well location, specific capacity, transmissivity, saturated thickness, and hydraulic conductivity.
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1963
Title:
Estimating the transmissibility of aquifers from the specific capacities of wells, in Bentall, Ray, 1963, Methods of determining permeability, transmissibility and drawdown
Series_Information:
Series_Name: U.S. Geological Survey Water-Supply Paper
Issue_Identification: 1536-I
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Theis, C.V., Brown, R.H., and Meyer, R.R., 1963, Estimating the transmissibility of aquifers from the specific capacities of wells, in Bentall, Ray, 1963, Methods of determining permeability, transmissibility and drawdown: U.S. Geological Survey Water-Supply Paper 1536-I, p. 331-341.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1963
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Theis and others,1963
Source_Contribution:
Source of methodology used to estimate transmissivity from specific-capacity data.
Process_Step:
Process_Description:
Data were manually digitized (on-screen) in the ArcMap editing environment based on location information provided by the original data source using, as a backdrop, 1:24,000 digital raster graphic topographic maps having a contour interval of 10 feet.
The following attributes were added to the point dataset: WELL_ID, LOCATION, TEST_DATE, RATE, DRAWDOWN, SPEC_CAP, T, SAT_THICK, K, REMARK, and SOURCE.
Source_Used_Citation_Abbreviation: Bjorklund and Brown, 1957
Source_Used_Citation_Abbreviation: NHPQ, 1967
Source_Used_Citation_Abbreviation: JR Engineering, 2005
Source_Used_Citation_Abbreviation: HRS, 2006
Source_Used_Citation_Abbreviation: Skinner, 1963
Source_Used_Citation_Abbreviation: CDWR
Source_Used_Citation_Abbreviation: USGS
Source_Used_Citation_Abbreviation: Wilson, 1965
Source_Used_Citation_Abbreviation: Theis and others, 1963
Process_Date: 20091020
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: T:\Temp\xml69.tmp
Process_Date: 20100608
Process_Time: 14365700
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
U:\Lost_Creek\CGS_ASR\Datasets\Lost_Creek_datasets_060810\welltest_data
Process_Date: 20100609
Process_Time: 11002700
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: T:\Temp\xml2D.tmp
Process_Date: 20100916
Process_Time: 12363900
Cloud_Cover: 0

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 37

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 13
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -105.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: National Geodetic Vertical Datum of 1929
Altitude_Resolution: 1
Altitude_Distance_Units: feet
Altitude_Encoding_Method: Implicit coordinate

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: ds507_welltest_data
Entity_Type_Definition: point
Entity_Type_Definition_Source: compiled by USGS from various sources
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: WELL_ID
Attribute_Definition:
Number used to identify well or test-hole site. WELL_ID of data compiled from CDWR indicates well-permit number.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Unique well identifier from various sources.
Attribute:
Attribute_Label: LOCATION
Attribute_Definition:
Describes site location by township, range, and section. For example, a site described as SB00106322ACC is located in the southwest quarter of the southwest quarter of the northeast quarter of section 22, Township 1 North, Range 63 West. The letter S at the beginning of the number indicates the site is referenced to the Sixth Principal Meridian. The letter B following S indicates the site is a north Township (a letter C following S would indicate a south Township. The eight digits following SB indicate Township number (001), Range number (063), and section (22). Letters following township, range, and section indicate quarter (A), quarter-quarter (C), and quarter-quarter-quarter (C) sections, respectively. The letters A, B, C, and D represent northeast, northwest, southwest, and southeast quarters, respectively.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name:
Coded well identifier including Public Land Survey System (PLSS) information.
Codeset_Source: Department of the Interior
Attribute:
Attribute_Label: TEST_DATE
Attribute_Definition: Date of aquifer test or specific-capacity test.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Domain is valid date values.
Attribute:
Attribute_Label: RATE
Attribute_Definition:
Pumping rate of well during specific-capacity test, in gallons per minute.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Domain is 0 to a positive value.
Attribute:
Attribute_Label: DRAWDOWN
Attribute_Definition: Drawdown, in feet, measured during specific-capacity test.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Domain is 0 to a positive value.
Attribute:
Attribute_Label: SPEC_CAP
Attribute_Definition:
Specific capacity of well, in gallons per minute per foot of drawdown, calculated as pumping rate divided by drawdown.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Domain is 0 to a positive value.
Attribute:
Attribute_Label: T
Attribute_Definition:
Aquifer transmissivity, in feet squared per day. Transmissivity values at wells with aquifer-test data are the values reported by the data source. The method of Theis and others (1963, p. 331-341) (see Lineage: Source_Information) was used to estimate aquifer transmissivity from specific-capacity data at wells where aquifer-test data were not available. Comparison of transmissivities calculated using the method of Theis and others (1963) to transmissivities determined by aquifer tests indicated that transmissivities estimated from specific capacity were smaller than those from aquifer tests. Therefore, transmissivity values from aquifer tests were regressed against transmissivity estimated from specific capacity, and the resulting power regression equation was used to adjust transmissivity values estimated from specific capacity.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Domain is 0 to a positive value.
Attribute:
Attribute_Label: SAT_THICK
Attribute_Definition:
Aquifer saturated thickness, in feet, at the well location. Saturated thickness at wells for which aquifer-test data were available is the value reported by the data source. Saturated thickness at wells for which aquifer-test data were not available is approximated as the length of the perforated well interval.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Domain is 0 to a positive value.
Attribute:
Attribute_Label: K
Attribute_Definition:
Aquifer hydraulic conductivity, in feet per day. Hydraulic conductivity at wells for which aquifer-test data were available is the value reported by the data source. Hydraulic conductivity at wells for which aquifer-test data were not available is calculated as transmissivity divided by the saturated thickness (length of perforated well interval).
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Domain is 0 to a positive value.
Attribute:
Attribute_Label: REMARK
Attribute_Definition:
Additional information related to the site, particularly to the materials used from the data source.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Comments text field having multiple possible values.
Attribute_Measurement_Frequency: None planned
Attribute:
Attribute_Label: SOURCE
Attribute_Definition: Source of data.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bjorklund&Brown, 1957
Enumerated_Domain_Value_Definition:
Bjorklund, L.J., and Brown, R.F., 1957, Geology and ground-water resources of the lower South Platte River valley between Hardin, Colorado, and Paxton, Nebraska: U.S. Geological Survey Water-Supply Paper 1378, 431 p., 4 pls.
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CDWR
Enumerated_Domain_Value_Definition: Colorado Division of Water Resources well-permit database.
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: JR Engineering, 2005
Enumerated_Domain_Value_Definition: JR Engineering, written commun. (2005)
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: HRS, 2006
Enumerated_Domain_Value_Definition: HRS Water Consultants, Inc., written commun. (2006)
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NHPQ, 1967
Enumerated_Domain_Value_Definition:
Nelson, Haley, Patterson, and Quirk, Inc., 1967, Ground water resources of the Lost Creek drainage basin, Weld, Adams, and Arapahoe Counties, Colorado: Report prepared for the Colorado Ground Water Commission, 32 p., 3 pls.
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Skinner, 1963
Enumerated_Domain_Value_Definition:
Skinner, M.M., 1963, Artificial groundwater recharge in the Prospect Valley area, Colorado: Colorado Agricultural Experiment Station General Series 792, 89 p.
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: USGS
Enumerated_Domain_Value_Definition:
Well records on file with the U.S. Geological Survey Colorado Water Science Center.
Enumerated_Domain_Value_Definition_Source: USGS
Overview_Description:
Entity_and_Attribute_Overview:
Attributes of the dataset include the well identifier, well location, aquifer test or specific-capacity test date, pumping rate during specific-capacity test, drawdown measured during the specific-capacity test, the calculated specific capacity, aquifer transmissivity, saturated thickness, aquifer hydraulic conductivity, remarks, and data source.
Entity_and_Attribute_Detail_Citation:
Arnold, L.R., 2010, Geographic information datasets of regolith-thickness data, regolith-thickness contours, raster-based regolith thickness, and aquifer-test and specific-capacity data for the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado: U.S. Geological Survey Data Series 507.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ask USGS
Contact_Position: Ask USGS -- Water Webserver Team
Contact_Address:
Address_Type: mailing address
Address: 445 National Center
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact_Electronic_Mail_Address:
<http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+ds507_welltest_data>
Resource_Description: Downloadable Data
Distribution_Liability:
Although this dataset has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: shapefile
Format_Version_Number: ArcGIS 9.3
Format_Specification: shapefile
File_Decompression_Technique: no compression applied
Transfer_Size: 44.8 KB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://water.usgs.gov/GIS/dsdl/ds507_welltest_data.zip>
Online_Computer_and_Operating_System: NA
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO-9660
Fees: None. This dataset is provided by USGS as a public service
Ordering_Instructions: <http://ask.usgs.gov/>
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2010

Metadata_Reference_Information:
Metadata_Date: 20100717
Metadata_Review_Date: 20091030
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ask USGS
Contact_Position: Ask USGS -- Water Webserver Team
Contact_Address:
Address_Type: mailing address
Address: 445 National Center
Address: P.O. Box 25046
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact_Electronic_Mail_Address:
<http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+ds507_welltest_data>
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.9.6 on Thu Sep 16 12:37:39 2010