Selected geologic data for wells and test holes in and near 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 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. Geoligical Survey
- Online_Linkage: <http://water.usgs.gov/lookup/getspatial?ds507_regolith_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:
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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.
- 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., 2010, 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 geologic information concerning regolith thickness and top-of-bedrock altitude at selected well and test-hole locations in and near the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado. Data were compiled from published reports, consultant reports, and from lithologic logs of wells and test holes on file with the U.S. Geological Survey and the 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. The purpose of this dataset is to provide information about regolith thickness and altitude of the top-of-bedrock surface underlying regolith in the Lost Creek Designated Ground Water Basin. Points in the dataset were used as the basis for preparing contour lines of equal regolith thickness shown in the dataset ds507_regthick_contours.
- 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: -104.566938
- East_Bounding_Coordinate: -104.185506
- North_Bounding_Coordinate: 40.305595
- South_Bounding_Coordinate: 39.680017
- Keywords:
-
- Theme:
-
- Theme_Keyword_Thesaurus: none
- Theme_Keyword: inlandWaters
- Theme_Keyword: aquifer
- Theme_Keyword: regolith
- Theme_Keyword: unconsolidated sediments
- 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: P.O. Box 25046
- Address: 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_regolith_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:
-
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. Geoligical Survey
- 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>
- Cross_Reference:
-
- 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 Survey
- Online_Linkage: <http://water.usgs.gov/lookup/getspatial?ds507_welltest_data>
- Data_Quality_Information:
-
- Attribute_Accuracy:
-
- Attribute_Accuracy_Report:
-
Regolith-thickness data were compiled from Bjorklund and Brown (1957), Nelson, Haley, Patterson, and Quirk, Inc. (1967), HRS Water Consultants, Inc., written commun. (2006), Hurr and others (1972), Skinner (1963), and lithologic logs from wells and test holes on file with the Colorado Division of Water Resources and the U.S. Geological Survey Colorado Water Science Center. In some places, weathered bedrock may have been mapped as regolith because of inaccurate lithologic logs or an indistinct contact between regolith and the underlying bedrock. In particular, lithologic logs of deep wells completed in bedrock were used to map regolith thickness in the southern part of the Lost Creek basin where few other data were available, and regolith thickness determined from these logs might not be accurate because they commonly lacked detailed regolith information.
Land-surface altitude was derived from information provided by the original source or estimated by using 1:24,000-scale topographic maps. Regolith thickness was estimated from lithologic logs or from information provided by the original data source specified in the SOURCE attribute field. Altitude of the top of bedrock was derived by subtracting regolith thickness from the land-surface altitude.
- Quantitative_Attribute_Accuracy_Assessment:
-
- Attribute_Accuracy_Value: unknown
- Attribute_Accuracy_Explanation:
-
Accuracy of regolith-thickness data is variable depending on the accuracy of lithologic logs used to estimate regolith thickness.
- Logical_Consistency_Report:
-
Point attributes for this dataset are consistent in meaning, although the attribute information was derived from multiple sources indicated in the SOURCE attribute. All points were processed by a single individual to ensure data consistency.
- Completeness_Report:
-
Data were digitized and plotted manually on-screen based on location information provided by the original 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. Site locations were plotted with consideration of existing structures (such as buildings, wells, and windmills), reported land-surface altitude, and reported distances from section lines. The eastern, western, and southern extent of the dataset is defined by the topographic boundary of the Lost Creek drainage basin The northern extent of the dataset is defined by an arbitrary line about one mile north of the northernmost limit of the Lost Creek Designated Ground Water Basin.
- 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. For other data, the locations generally were described to the nearest quarter-quarter-quarter section. Other locations were described to the nearest 4th or 5th quarter section. Some data descriptions, however, were only to the nearest quarter. Ancillary data, such as reported land-surface elevation and structures (such as buildings, wells, and windmills) shown on topographic maps were used to refine data locations. In cases where ancillary data were not available, data points 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 1/2 section, or about 2,640 feet (only 1 point, SB00206215, potentially could be this inaccurate). However, horizontal accuracy of most points is estimated as better than about 330 feet (1/4, 1/4, 1/4 section). Accuracy is estimated on the basis of reported Public Land Survey System accuracy (number of quarters provided by original source).
- Vertical_Positional_Accuracy:
-
- Vertical_Positional_Accuracy_Report:
-
Vertical accuracy of the top-of-bedrock altitude is variable depending on the accuracy of lithologic logs used to estimate regolith thickness and determine top of bedrock.
- Quantitative_Vertical_Positional_Accuracy_Assessment:
-
- Vertical_Positional_Accuracy_Value: 5
- Vertical_Positional_Accuracy_Explanation:
-
Vertical accuracy of the land-surface altitude is assumed to be within half a contour interval shown on 1:24,000-scale U.S. Geological Survey topographic maps, or 5 feet.
- 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 and test-hole locations and regolith-thickness information.
- 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 and test-hole locations and regolith-thickness information.
- 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:
-
- Multiple_Dates/Times:
-
- Single_Date/Time:
-
- Calendar_Date: 1997
- Single_Date/Time:
-
- Calendar_Date: 1999
- Source_Currentness_Reference: geologic condition
- Source_Citation_Abbreviation: HRS, 2006
- Source_Contribution:
-
Source for well and test-hole locations and regolith-thickness information.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: U.S. Geological Survey
- Publication_Date: 1972
- Title:
-
Hydrogeologic characteristics of the valley-fill aquifer in the Weldona reach of the South Platte River valley, Colorado
- Geospatial_Data_Presentation_Form: document
- Series_Information:
-
- Series_Name: U.S. Geological Survey Open-File Report
- Issue_Identification: 73-127
- Publication_Information:
-
- Publication_Place: Reston, VA
- Publisher: U.S. Geological Survey
- Other_Citation_Details:
-
Hurr, R.T., Schneider, P.A., Jr., and others, 1972, Hydrogeologic characteristics of the valley-fill aquifer in the Weldona reach of the South Platte River valley, Colorado: U.S. Geological Survey Open-File Report 73-127, 2 p. 6 pl.
- Type_of_Source_Media: paper
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: 1972
- Source_Currentness_Reference: geologic condition
- Source_Citation_Abbreviation: Hurr and others, 1972
- Source_Contribution:
-
Source for well and test-hole locations and regolith-thickness information.
- 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 groundwater 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 and test-hole locations and regolith-thickness information.
- 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 publicly available data
- Publisher: unpublished publicly 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 locations and regolith-thickness information.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: U.S. Geological Survey
- Publication_Date: unknown
- 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. Some data from these records are published online.
- 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 of well and test-hole locations and regolith-thickness information.
- 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.
The following attributes were added to the point dataset: WELL_ID, LOCATION, LAND_ALT, THICKNESS, THICK_QLFR, BR_ALT, BR_QLFR, REMARK, and SOURCE. Regolith-thickness data were compiled from published sources, consultant reports, and lithologic logs of wells and test holes on file with the Colorado Division of Water Resources and the U.S. Geological Survey Colorado Water Science Center.
- Source_Used_Citation_Abbreviation: Bjorklund and Brown, 1957
- Source_Used_Citation_Abbreviation: NHPQ, 1967
- Source_Used_Citation_Abbreviation: HRS, 2006
- Source_Used_Citation_Abbreviation: Hurr and others, 1972
- Source_Used_Citation_Abbreviation: Skinner, 1963
- Source_Used_Citation_Abbreviation: CDWR
- Source_Used_Citation_Abbreviation: USGS
- Process_Date: 20091020
- Process_Step:
-
- Process_Description: Metadata imported.
- Source_Used_Citation_Abbreviation: T:\Temp\xml62.tmp
- Process_Date: 20100608
- Process_Time: 14203800
- Process_Step:
-
- Process_Description: Dataset copied.
- Source_Used_Citation_Abbreviation:
-
U:\Lost_Creek\CGS_ASR\Datasets\Lost_Creek_datasets_060810\regolith_data
- Process_Date: 20100609
- Process_Time: 11002100
- Process_Step:
-
- Process_Description: Metadata imported.
- Source_Used_Citation_Abbreviation: T:\Temp\xml29.tmp
- Process_Date: 20100916
- Process_Time: 12315800
- 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: 749
- 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_regolith_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. For data where the SOURCE is CDWR, the WELL_ID refers to the 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 located at SC00206321ADB is located in the northwest quarter of the southeast quarter of the northeast quarter of section 21, Township 2 South, Range 63 West. The letter S at the beginning of the number indicates the site is referenced to the Sixth Principal Meridian. The letter C following S indicates the site is a south Township (a letter B following S would indicate a north Township). The eight digits following SC indicate Township number (002), Range number (063), and section (21). Letters following township, range, and section indicate quarter (A), quarter-quarter (D), and quarter-quarter-quarter (B) 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: LAND_ALT
- Attribute_Definition:
-
Land-surface altitude, in feet. If not provided by the original data source, land-surface altitude was estimated by using digital raster graphic (DRG) topographic maps having a scale of 1:24,000 with a contour interval of 10 feet. Altitudes estimated from DRG topographic maps are in feet and referenced to the National Geodetic Vertical Datum of 1929 (NGVD29). Vertical datum for altitudes provided by the original data source is unknown.
- Attribute_Definition_Source: USGS
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Altitude of land surface at well location.
- Attribute:
-
- Attribute_Label: THICKNESS
- Attribute_Definition:
-
Thickness of the regolith (unconsolidated sediments) estimated from lithologic logs or provided by the original data source. Thickness is in feet.
- Attribute_Definition_Source: USGS
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Regolith thickness, in feet.
- Attribute:
-
- Attribute_Label: THICK_QLFR
- Attribute_Definition:
-
Thickness qualifier. Some wells or test holes did not extend to bedrock. Therefore, total regolith thickness could not be estimated at these sites. The abbreviation GT indicates that estimated thickness is greater than that shown in THICKNESS
- Attribute_Definition_Source: USGS
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: GT
- Enumerated_Domain_Value_Definition:
-
Greater than - actual thickness of unconsolidated sediments is greater than the THICKNESS field value because the well did not extend to bedrock.
- Enumerated_Domain_Value_Definition_Source: USGS
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: null entry
- Enumerated_Domain_Value_Definition:
-
THICKNESS field value can be used as is without qualifier because well did extend to bedrock.
- Enumerated_Domain_Value_Definition_Source: USGS
- Attribute:
-
- Attribute_Label: BR_ALT
- Attribute_Definition:
-
The altitude, in feet, of the top-of-bedrock surface underlying the regolith was calculated by subtracting regolith thickness from land-surface altitude. Top-of-bedrock altitude is in feet above mean seal level and in the NGVD 1929 (National Geodetic Vertical Datum of 1929).
- Attribute_Definition_Source: USGS
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Altitude of top of bedrock, in feet.
- Attribute:
-
- Attribute_Label: BR_QLFR
- Attribute_Definition:
-
Bedrock-altitude qualifier. Some wells or test holes did not extend to bedrock. Therefore, actual top-of-bedrock altitude could not be estimated at these sites. The abbreviation LT indicates that estimated top-of-bedrock altitude is less than that shown in BR_ALT.
- Attribute_Definition_Source: USGS
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: LT
- Enumerated_Domain_Value_Definition:
-
Less than - top-of-bedrock altitude is less than the value in BR_ALT field because hole did not extend to bedrock.
- Enumerated_Domain_Value_Definition_Source: USGS
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: null entry
- Enumerated_Domain_Value_Definition:
-
BR_ALT- top-of-bedrock altitude field value can be used as is without qualifier because well extended to bedrock.
- Enumerated_Domain_Value_Definition_Source: USGS
- Attribute:
-
- Attribute_Label: REMARK
- Attribute_Definition:
-
Additional information related to the site, particularly to the information 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:
-
from 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: 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: Hurr&others,1972
- Enumerated_Domain_Value_Definition:
-
Hurr, R.T., Schneider, P.A., Jr., and others, 1972, Hydrogeologic characteristics of the valley-fill aquifer in the Weldona reach of the South Platte River valley, Colorado: U.S. Geological Survey Open-File Report 73-127, 2 p. 6 pl.
- 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 ground-water 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, location, land-surface altitude, thickness of regolith (unconsolidated sediments) estimated from lithologic logs or provided by the data source, a calculated top-of-bedrock altitude, 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_regolith_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: 156 KB
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name: <http://water.usgs.gov/GIS/dsdl/ds507_regolith_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: 20100811
- 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
- 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_regolith_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 12:32:32 2010