Identification_Information: Citation: Citation_Information: Originator: Wyoming Water Resources Center Publication_Date: 199511 Title: Wyoming Well Permits Publication_Information: Publication_Place: Laramie, Wyoming Publisher: Spatial Data and Visualization Center Online_Linkage: Description: Abstract: Contains just short of 80,000 point locations of Wyoming well permit locations on file with the Wyoming State Engineer's Office. They range in dates from the early 1900s to 1992, but are located only to the nearest 40 acre parcel. All locational information and attributes were imported from the Wyoming State Engineer's Office Well Permits Database stored in Advanced Revelation software. Purpose: This data was created specifically for use in the Wyoming Ground-water Vulnerability Mapping project, to generate depth-to-intial ground water contours. This data should be used with extreme caution based on the inaccuracies associated with township-range locational descriptions as well as the problems inherent in the State Engineer's Office database. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1995 Currentness_Reference: date boundaries were generated Status: Progress: complete Maintenance_and_Update_Frequency: none planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -111.26477012 East_Bounding_Coordinate: -103.83670034 North_Bounding_Coordinate: 44.99903411 South_Bounding_Coordinate: 40.94837176 Keywords: Theme: Theme_Keyword: Groundwater Theme_Keyword: wells Theme_Keyword: aquifer Theme_Keyword: water-table Theme: Theme_Keyword_Thesaurus: None Place: Place_Keyword: Wyoming Place: Place_Keyword_Thesaurus: None Access_Constraints: none Use_Constraints: This dataset was designed for use in 1:100,000-scale regional analysis and should not be used for site-specific analysis. should be used with extreme caution based on the inaccuracies associated with township-range locational descriptions as well as the problems inherent in the State Engineer's Office database. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Data Manger Contact_Organization: Spatial Data and Visualization Center Contact_Address: Address_Type: mailing address Address: Box 4008 University Station City: Laramie State_or_Province: Wyoming Country: USA Postal_Code: 82071 Contact_Voice_Telephone: 307-766-2735 Contact_Electronic_Mail_Address: n/a Hours_of_Service: 8 AM to 5 PM MST Native_Data_Set_Environment: The dataset was created in and is stored in Arc/Info 7.0.4 software for Unix operating system, a vector coverage with point features only. Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: location of well permit locations Browse_Graphic_File_Type: gif Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The Wyoming State Engineer's Office performed no reviews to their database before transferring the data to the Wyoming Water Resources Center. The WWRC has discovered many errors, but has no way of determining the correct values. Completeness_Report: unknown Logical_Consistency_Report: does not apply for points. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: There are two sources of error associated with the transfer of location description from township/range/section/quarter/quarter to latitude/longitude. First of all, because the latitude/longitude generated is the centroid of the quarter/quarter section, the actual well location could be anywhere within the quarter/quarter section, or +/- 279 meters. Secondly, the program used to convert the TRSQQ to Lat/Long (TRLL), assumes all sections are the same size and shape, but in fact many sections are irregular in size. Because of this, some well locations were inaccurately placed in an adjacent section. Of the total 79,798 wells, 9,646 (12%) were identified as being placed in an adjacent section, approximately +/- 558 meters. >ARC/INFO Procedure to identify inaccurate wells: >1. Use IDENTITY to attach the section number from the PLSS > dataset to all the wells falling within that section >2. Convert identity point coverage to a grid, original well section > as the VALUE item >3. Convert identity point coverage to a grid, plss section as the > VALUE item >4. Use conditional statement in GRID to create a new grid > containing only those section numbers from both grids that > don't match > if (wellgrid NE plssgrid) checkgrid = plssgrid > endif >5. Convert the output grid back to polygon >6. Perform another IDENTITY to transfer the polygon values to > the original wells dataset Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Wyoming State Engineer's Office Title: Wells Permit Database Publication_Date: unknown Type_of_Source_Media: digital Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: unknown Source_Currentness_Reference: unknown Source_Citation_Abbreviation: database Source_Contribution: source of township/range/section location and attributes of wells Process_Step: Process_Description: The well permit data for the dataset existed as an Advanced Revelation (AREV) database at the Wyoming State Engineer's Office. In April of 1994 the entire database was exported to ASCII text files by county. This text file included permit no., permit holder, location in Township/Range/Section/QQ, facility name, permit status, use code, priority date, yield, well depth, static water depth, main water bearing zone (mwbz) top, mwbz bottom, well diameter, county, and water district. These text files were sorted and imported into an INFO database. Any records where field types didn't match (ie a character entry such as a person's name into the integer well depth field) were discarded initially. After importing each county 84,700 unique records existed. Next, the record number, township, range, section, and qq were exported to a text file and run through a fortran program called TRLL (Township Range to Lat-Long) which was created by Charles Morgan and Jesse McNellis of USGS in 1965 and updated by Dennis Grasso in 1988. This routine generates latitude and longitude values for the points from township/range descriptions. Using the GENERATE utility within ARC/INFO these records were converted to a point coverage and the original INFO file was joined using the common record number. Unfortunately TRLL does not include information for the Wind River Indian Reservation. To get lat/long locations for that area a routine was created at the WWRC to infer lat/long locations from the 1:100,000-scale PLSS layer. QQ Sections were interpolated for this area based on section boundaries. Locational accuracy for this area is unknown and should be assumed to be marginal. Process_Date: 1994 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 79,798 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: .001 Longitude_Resolution: .001 Geographic_Coordinate_Units: Decimal Degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS1980 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Many of the data fields included in the SEO database have been excluded from this layer. If permit ownership information, well yield data, or other more specific fields are needed they should be obtained directly from the SEO and then joined to the GIS layer. The WWRC or SDVC take no responsibility for the misuse of this data or erroneous conclusions that may be made as a result of using this data. Attributes associated with point attribtue table: >PERMIT_NO: Wyoming SEO well permit number >TOWNSHIP: Number of township well is located in >RANGE: Number of range well is located in >SECTION: 1 through 36: Number of section well is located in >QQ: Quarter-quarter section well is located in (eg. NENW) >CERT/ORDER_NO >PERMIT_STATUS: CAN = canceled; ADJ = adjudicated; EXP = exploration >USE_CODE: DOM = domestic; STO = stock; MIS = misc; RAI = railroad > IRR = irrigation; MUN = municipal >PRIORITY_DATE: Date of permit issuance >ACTUAL_YIELD: Yield of well in cfs (cubic feet per second) >WELL_DEPTH: depth of well in feet >STAT_WATER_DPTH: depth to static water level in feet >MWBZ_TOP: Depth to the top of the main water bearing zone >MWBZ_BOTTOM: Depth of bottom of the main water bearing zone >WELL_DIAMETER: diameter of well in inches >COUNTY: county that the well falls in >WATER_DIV/DIST:Wyoming SEO water district the well falls in >CHEM_TEST: describes if a chemical test was performed on well at > time of drilling >WELL_LOG: Describes if well has a well log filed with SEO >ERROR: Value is 0 if well was correctly placed within > section. Otherwise, the value is the number of the > adjacent section where the well was mislocated. > See the Positonal Accuracy section for more details. Many of the data fields included in the SEO database have been excluded from this layer. If permit ownership information, well yield data, or other more specific fields are needed they should be obtained directly from the SEO and then joined to the GIS dataset. The WWRC or SDVC take no responsibility for the misuse of this data or erroneous conclusions that may be made as a result of using this data. Entity_and_Attribute_Detail_Citation: Not Available Metadata_Reference_Information: Metadata_Date: 199804 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Margo Berendsen Contact_Address: Address_Type: mailing address Address: Box 4008 University Station City: Laramie State_or_Province: Wyoming Postal_Code: 82071 Country: USA Contact_Voice_Telephone: 307-766-2751 Contact_Electronic_Mail_Address: meh@uwyo.edu Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998