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This page last updated: 04/11/2007
Metadata created using Minnesota Geographic Metadata Guidelines
| Originator | Minnesota Geological Survey and Land Management Information Center (LMIC), Minnesota Planning |
| Abstract | WWPTCALC is a GIS Point cover created from the well listing in the Minnesota Geological Survey's County Well Index (CWI) data base. Specifically, this coverage contains wells which have not been field-verified and for which a location was calculated, based on the Public Land Survey coordinates reported by the driller on the water well driller log submitted to the Minnesota Department of Health. The current WWPTCALC point cover was created from the CWI file obtained from MGS December 28.1998. At that time, approximately 167,000 records did not have field-verified locations; of these, 157,147 had viable locations (i.e., locations which represented valid combinations of township, range, and section values for Minnesota.) The associated Index file contains information on well use, well depth, ownership, address, and geology from County Well Index. The information in County Well Index was entered by the Minnesota Geological Survey from the Water Well Driller Log form, which was submitted by the well driller to the Minnesota Department of Health at the time the well was constructed. Submission of a Water Well Driller Log is a requirement of the Minnesota Water Well Construction Code, passed by the State Legislature in 1974. While the County Well Index does not represent all wells in the state, it is the single most complete listing of wells. Accuracy and completeness are discussed elsewhere in this document. |
| Browse Graphic | View a sample of the data. |
| Time Period of Content Date | 12/28/1998 |
| Currentness Reference | File contains point locations for non-field verified wells in County Well Index as of December 28, 1998 |
| Access Constraints | None |
| Use Constraints | Acknowledgement of the Minnesota Geological Survey and the Land Management Information Center is appreciated in products derived from these data. Use should be consistent with the limits of the data set, as described in 'Locational Accuracy', ' Attribute Accuracy', 'Lineage', and 'Completeness' sections. Redistribution Conditions: In obtaining these data from LMIC, it is understood that you and/or your organization have the right to use them for any internal purpose. If you modify them, you should document those changes in a metadata record that should accompany all redistributed data. If you transmit or provide these data in any form to another user, the data MUST be accompanied by a copy of the LMIC disclaimer and all documentation provided with the original data set including the full metadata record. |
| Distributor Organization | Minnesota Land Management Information Center (LMIC) |
| Ordering Instructions | State file in Arc Export format and ArcView Shapefile format currently available for free online download. This data set is distributed on the internet by clicking below after Online Linkage. Doing so will tell your browser tostart downloading a self-extracting 'ZIP' file which will contain the following: - Arc Export Files (.e00) and Shapefiles (.shp, etc.) - Associated data tables (.e00) and code files (.e00 and .dbf format) - Metadata (.htm) for the dataset. - NOTICE.RTF, and important notice about this data set than can be read by most word processing software, and an ascii text version of the same notice (NOTICE.TXT) After downloading the self-extracting .zip file (which will have an .exe extension), simply execute (run) the file. For example, your can double click it from Windows Explorer or File Manager. Doing this will automatically extract the files described above. Simply delete files not needed. Contact distributor for other formats, including county data sets. |
| Online Linkage | Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata. |
Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information
| Section 1 | Identification Information | Top of page | ||
| Originator | Minnesota Geological Survey and Land Management Information Center (LMIC), Minnesota Planning | |||
| Title | Well Location Points (Calculated) from the Minnesota Geological Survey's County Well Index (CWI) - 1998 | |||
| Abstract | WWPTCALC is a GIS Point cover created from the well listing in the Minnesota Geological Survey's County Well Index (CWI) data base. Specifically, this coverage contains wells which have not been field-verified and for which a location was calculated, based on the Public Land Survey coordinates reported by the driller on the water well driller log submitted to the Minnesota Department of Health. The current WWPTCALC point cover was created from the CWI file obtained from MGS December 28.1998. At that time, approximately 167,000 records did not have field-verified locations; of these, 157,147 had viable locations (i.e., locations which represented valid combinations of township, range, and section values for Minnesota.) The associated Index file contains information on well use, well depth, ownership, address, and geology from County Well Index. The information in County Well Index was entered by the Minnesota Geological Survey from the Water Well Driller Log form, which was submitted by the well driller to the Minnesota Department of Health at the time the well was constructed. Submission of a Water Well Driller Log is a requirement of the Minnesota Water Well Construction Code, passed by the State Legislature in 1974. While the County Well Index does not represent all wells in the state, it is the single most complete listing of wells. Accuracy and completeness are discussed elsewhere in this document. |
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| Purpose | The County Well Index (CWI) data base represents the most complete listing of wells known in the state of Minnesota. The WWPTCALC point coverage has been created in order to provide an estimated geographic reference for well locations which provides a tool to map well attribute information (such as stratigraphy, ground water levels, water chemistry, and water use), which are collected by MGS and other agencies. The RELATEID field (a field containing EITHER the Minnesota Unique Well Number or the County Code and W-Series number) is the data field which provides the link between the Well Location GIS point cover and the many associated data tables. | |||
| Time Period of Content Date | 12/28/1998 | |||
| Currentness Reference | File contains point locations for non-field verified wells in County Well Index as of December 28, 1998 | |||
| Progress | In work | |||
| Maintenance and Update Frequency | County Well Index is updated continuously. Approximately 10,000 new wells are drilled in Minnesota each year. A new point cover is created periodically to reflect newly-added wells. | |||
| Spatial Extent of Data | State of Minnesota | |||
| Bounding Coordinates | -97.5 -89.0 49.5 43.0 |
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| Place Keywords | Minnesota, Statewide | |||
| Theme Keywords | geoscientificInformation, Well, Wells, Hydrology, Geology, Hydrogeology, Ground Water, Stratigraphy | |||
| Theme Keyword Thesaurus | ISO 19115 Topic Category | |||
| Access Constraints | None | |||
| Use Constraints | Acknowledgement of the Minnesota Geological Survey and the Land Management Information Center is appreciated in products derived from these data. Use should be consistent with the limits of the data set, as described in 'Locational Accuracy', ' Attribute Accuracy', 'Lineage', and 'Completeness' sections. Redistribution Conditions: In obtaining these data from LMIC, it is understood that you and/or your organization have the right to use them for any internal purpose. If you modify them, you should document those changes in a metadata record that should accompany all redistributed data. If you transmit or provide these data in any form to another user, the data MUST be accompanied by a copy of the LMIC disclaimer and all documentation provided with the original data set including the full metadata record. |
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| Contact Person Information | Susanne Maeder,
GIS Data Coordinator Minnesota Land Management Information Center (LMIC) 300 Centennial Building; 658 Cedar Street St. Paul, Minnesota 55155 Phone: 651.201.2488 FAX: 651.296.3698 E-mail: clearing.house@state.mn.us | |||
| Browse Graphic | View a sample of the data. | |||
| Browse Graphic File Description | ||||
| Associated Data Sets | Associated point coverage, WWPT, represents wells from County Well Index for which locations have been field-verified by MGS, plotted on a 1:24,000-scale USGS base map, and digitized, or have a surveyed or GPS-calculated location. The MGS County well Index (CWI) database, containing well contruction, stratigraphy, water level, and water chemistry data, is the primary associated data set. Data from many different agency databases can be associated with the WWPTCALC cover. Data are referenced by Minnesota Unique Well Number or a combination of county code and W-Series number (=RELATEID). The full County Well Index Software, and datasets by county, can be obtained from the Minnesota Geological Survey. For information, see http://128.101.142.76/mgs/cwi.html |
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| Section 2 | Data Quality Information | Top of full metadata | Top of page | |
| Attribute Accuracy | No statistical attribute assessment has been performed. Some attributes of the well, such as PLS location, depth, casing diameter, and driller record, may be checked if the well is in an area where geological studies are being done (for instance, a County Geologic Atlas or Regional Hydrogeologic Assessment by MGS). For wells in these areas, locations are verified, and the driller's description of the geologic layers encountered is converted by MGS into interpreted lithologic codes and geologic formation codes. Otherwise, no verification of information on the well driller log is performed. Older data which was originally entered into the MGS 'WELLOG' data base had been transcribed onto a coding form from the Water Well Driller Log, and keypunch data entry was done twice on each record in order to identify errors. Note that the well owner name and address represents the owner of the well AT THE TIME THE WELL WAS CONSTRUCTED. Subsequent changes in ownership are not recorded on the CWI file. Well records which have PLS locations reported to six quarter sections and which have Aquifer, Lithology, and Stratigraphy fields filled in are generally those which have been field-verified and interpreted by the Minnesota Geological Survey. Most of these are represented on the WWPT file rather than on WWPTCALC. Every well on the WWPTCALC point cover (and in County Well Index) has a MINNESOTA UNIQUE WELL NUMBER or a W-SERIES number. State Data Compatibility guidelines recommend that all new wells added or used in sampling programs have a Minnesota Unique Well Number. The number is the key to linking information collected by numerous parties about the same well. |
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| Logical Consistency | ||||
| Completeness | The WWPTCALC GIS file is created from a subset of records in the Minnesota Geological Survey's County Well Index. The County Well Index represents known wells on the main statewide well index and DOES NOT represent all existing wells. Water Well Driller reporting has only been required since the State Water Well Construction Code was passed in 1974. Although older wells have been identified and added to the file in some areas, most pre-1974 wells are not represented. Since the law's enactment, driller compliance has been incomplete, although it is improving over time. Driller reporting of well location ranges from excellent to poor. Minnesota Department of Health well inspectors visit approximately 25 percent of newly-drilled wells each year. These are expected to have improved reported location. GPS will soon be used as a means of obtaining higher-accuracy locational data on all inspected wells. In addition, over time, information from other state agency files and from local well inventories will be obtained and merged into this file. The Minnesota Geological Survey and the Minnesota Department of Health have been committed to keeping the CWI up-to-date by adding all newly-drilled wells. Over time, both the number of wells and the locational and geological accuracy of the well information will be improved. | |||
| Horizontal Positional Accuracy | The WWPTCALC point cover is constructed from location information of varying accuracies, reflecting the resolution of the location information on the original Minnesota Geological Survey files. For the CWI records used to create the WWPTCALC coverage, the PLS information submitted by the driller has not been independently verified. See the 'Lineage' field for a full description of the process used to create this file. The field, GCM_CODE, indicates the location accuracy for the particular well. | |||
| Lineage | 1. Well Log Data Entry (MGS): Information recorded on the Water Well Driller Log Form (Minnesota Department of Health) is entered into the County Well Index database by Minnesota Geological Survey staff. Information on the Water Well Driller log form includes location, described both by Public Land Survey (township-range-section-quarter-sections) location and by address. 2.State Arc Cover creation (LMIC): For all wells in the County Well Index 'Index' file (C4IX) which do not have a field-verified, digitized location, LMIC extracted the records and used the 'SECTIC-24K' conversion routine to calculate a point location for each well. The 'SECTIC-24K' program takes the Public Land Survey township, range, section, and subsection information and calculates the center of the smallest grid area reported. For example, if the well location was reported only to the section (a square-mile or 640-acre are), then the center of the section was calculated as the location of the well. If the well location was reported to four quarter-sections (a 2.5-acre-squre area), then the center or the fourth quarter was calculated. Calculations are based on a UTM file of section corner locations digitized by LMIC from the USGS 1:24,000 map series. To have a point location calculated, the CWI record had to have information down to at least the section level. Wells for which either township, range, or section values were zero, or which did NOT contain a valid township-range-section combination for Minnesota, did not have a point location calculated and are not on the WWPTCALC cover. All well records in County Well Index contain a county code in addition to the PLS location reported by the driller. In some cases, when the WWPTCALC is created, the well spatially does not appear in the same county as is indicated by the county code field . This indicates that, either the county, township, range, or section information from which the point is calculated is incorrect, or the calculation which places the point in the center of a grid physically places it in another county. (The latter situation often occurs when the calculation is to the center of a section, and the county boundary is not rectangular but diagonal, determined by the flow of a river). Some well points also fall within a lake boundary when overlayed against other coverages, due to the approximation involved in the point location calculation. In one previous version of this file, LMIC attempted to verify and correct these points based on the driller log wherever possible. This procedure was not done for the 1998 version of the dataset. Be aware that if the county code on the file from CWI is different than the county the point is physcially located in, the location of the point is questionable. (You may also have other questionable data points due to lack of verification of the original dataset, which will not necessarily show up because a county boundary is not crossed.) 3. County coverage creation (LMIC): State Arc/Info coverage, WWPTCALC, was split into 87 County Arc/Info coverages using the 'SPLIT' command in Arc/Info, with the DNR Hybrid County Boundary coverage as the split cover. 4. Shapefile creation (LMIC): For the state cover as a whole, and for the individual county files created in step #3, ArcView shapefiles were created. a. The Arc/INFO point coverages and the C4IX.DBF table (containing basic well index information from CWI) were loaded into Arc/View. b. The ArcView 'LINK' command was used to join the WWPTCALC.PAT information with the corresponding information in the C4IX file. The field, RELATEID, was used as the linking field. With the exception of the county code fields, duplicate fields from the WWPTCALC.PAT file were deleted, since attribution in C4IX was more complete. The field, COUNTY_C from the C4IX file was renamed CTY_CWI. c. The 'Convert to Shapefile' routine was then used, for the state file and each of the county files. |
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| Source Scale Denominator | ||||
| Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page | |
| Native Data Set Environment | Arc/INFO 7.2.1 | |||
| Geographic Reference for Tabular Data | ||||
| Spatial Object Type | Point | |||
| Vendor Specific Object Types | Point | |||
| Tiling Scheme | Available as state file or as county files | |||
| Section 4 | Spatial Reference Information | Top of full metadata | Top of page | |
| Horizontal Coordinate Scheme | UTM | |||
| Ellipsoid | GRS80 | |||
| Horizontal Datum | NAD83 | |||
| Horizontal Units | Meters | |||
| Distance Resolution | ||||
| UTM Zone Number | 15E | |||
| Section 5 | Entity and Attribute Information | Top of full metadata | Top of page | |
| Entity and Attribute Overview | See Minnesota Geological Survey, 'County Well Index User Manual' for further description of the data fields. Note that, for the Arc/INFO version, the WWPTCALC.PAT (water well point attribute table) and the C4IX (CWI Index File) exist as separate INFO files. In the ArcView Shapefile version, the information in the two files have been combined, with duplicate fields eliminated. Code tables are provided in INFO export and .dbf formats. These include: GCMCODE, GEOCSRC, MGSQUAD, COUNTY, ELEV_MC, STATUS, USE, LOC_SRC, DATA_SRC, POLL_TYP, STR_SRC, STR_GEOL, STR_METH, STR_CODE, INPT_SRC. |
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| Entity and Attribute Detailed Citation | Data field descriptions are extracted from the MGS -County Well Index user manual. The WWPTCALC point cover contains the following data fields, listed in INFO format. In the shapefile format, all floating point, (F), binary B), and integer (I) numbers are converted to Dbase numeric. DATAFILE NAME: WWPTCALC.PAT 12 ITEMS: STARTING IN POSITION 1 COL ITEM NAME WDTH OPUT TYP N.DEC ALTERNATE NAME AREA 8 18 F 5 PERIMETER 8 18 F 5 WWPTCALC# 4 5 B - WWPTCALC-ID 4 5 B - SEQ# 4 5 B - RELATEID 10 10 C - TYPE 2 2 C - GCM_CODE 3 3 C - GEOC_SRC 5 5 C - GEOC_DATE 8 8 I - UTME 6 6 I - UTMN 7 7 I - UTM_ZONE 2 2 I - DATUM 5 5 C - MGSQUAD 4 4 C - UNIQUE_NO 8 8 C - COUNTY_C 2 2 C - DATA FIELD DESCRIPTIONS: AREA - Standard Arc field - blank for point data PERIMETER - Standard Arc field - blank for point data WWPTCALC# - Standard Arc field - internal ARC identifier for the point (<covername>#) WWPTCALC-ID - Standard Arc field - point identifier - can be user-assigned (<covername>-ID) SEQ# - Number assigned in the process of converting database table to GIS point coverage. RELATEID - Key relate field for all well data: * IF Minnesota Unique Well Number, then 00 Minnesota Unique Well Number (8C) * IF W-Series Number, then CC(County Code)+ W + 0 + original W-Series Number Note that in MGS and Mn Department of Health Databases, the Minnesota Unique Well Number has been converted from a 6-character to an 8-character field, to accomodate future growth in the system. Current Mn Unique Well Numbers and still take up the right-most 6 characters, with two leading zeros. TYPE - Point Type (WW = water well) GCM_CODE - Geographic Method Code (identifies location accurcay). Code file is GCMCODE *A = Digitized - scale 1:24,000 or larger *AS = Digitized from scanned image - scale 1:24,000 or larger *B = Digitized - scale 1:100,000 to 1:24,000 *C = Digitized - scale smaller than 1:100,000 *D = Digitized - scale unspecified/unknown *G = GPS (Global Positioning System / satellite ) *H = GPS; accuracy < 12 meters (+40 feet or worse) *I = GPS; accuracy 3 to 12 meters (+6 to 40 feet) *J = GPS; accuracy 1 to 3 meters (+ 3 to 10 feet) *K = GPS; accuracy _ 1 meter (+3 feet or better) *M = Manual (estimated from map or description) *P = Visually digitized at parcel centroid from air *Q = Digitized - MGS compiled gravity station locations *S = Surveyed *T = Calculated from township-range-section *U = Calculated from township-range-section-Q *V = Calculated from township-range-section-QQ *W = Calculated from township-range-section-QQQ *X = Calculated from township-range-section-QQQQ *Y = Calculated from township-range-section-QQQQQ *Z = Calculated from township-range-section-QQQQQQ GEOC_SRC - Geographic Coordinate Source. Code file is GEOCSRC GEOC_DATE - Geographic Coordinate Date UTME - Universal Transverse Mercator (UTM) Easting value UTMN - Universal Transverse Mercator (UTM) Northing value UTM_ZONE - Universal Transverse Mercator (UTM) Zone DATUM - Horizontal Datum (e.g., NAD27, NAD83). All data on this file is NAD83. MGSQUAD - Minnesota Geological Survey Code for USGS 1:24,000 Quadrangle Map Sheet. Code file is MGSQUAD UNIQUE_NO - Field contains Minnesota Unique Well Number, the traditional 6-character field padded with two leading zeros, or the W-Series number, represented as 'W' + Leading zero + W-Series number. COUNTY_C - Minnesota state 2-digit county code. Code file is COUNTY The associated C4IX data table is the main 'Index' file from County Well Index, containing key identifying information about the well. It contains the following data fields. The common or relational data field between the two tables is the RELATEID. DATAFILE NAME: C4IX 50 ITEMS: STARTING IN POSITION 1 COL ITEM NAME WDTH OPUT TYP N.DEC ALTERNATE NAME RELATEID 10 10 C - COUNTY_C 2 2 C - UNIQUE_NO 8 8 C - WELLNAME 24 24 C - TOWNSHIP 3 3 I 0 RANGE 2 2 I 0 RANGE_DIR 1 1 C - SECTION 2 2 I 0 SUBSECTION 6 6 C - MGSQUAD_C 4 4 C - ELEVATION 4 4 I 0 ELEV_MC 3 3 C - STATUS_C 1 1 C - USE_C 2 2 C - LOC_MC 1 1 C - LOC_SRC 5 5 C - DATA_SRC 5 5 C - DEPTH_DRLL 4 4 I 0 DEPTH_COMP 4 4 I 0 DATE_DRLL 8 10 D - CASE_DIAM 2 2 I 0 CASE_DEPTH 4 4 I 0 GROUT 1 1 C - POLLUT_DST 4 4 I 0 POLLUT_DIR 2 2 C - POLLUT_TYP 3 3 C - STRAT_DATE 8 10 D - STRAT_UPD 8 10 D - STRAT_SRC 5 5 C - STRAT_GEOL 3 3 C - STRAT_MC 1 1 C - DEPTH2BDRK 4 4 I 0 FIRST_BDRK 4 4 C - LAST_STRAT 4 4 C - OHTOPUNIT 4 4 C - OHBOTUNIT 4 4 C - AQUIFER 4 4 C - CUTTINGS 1 1 C - CORE 1 1 C - BHGEOPHYS 1 1 C - GEOCHEM 1 1 C - WATERCHEM 1 1 C - OBWELL 1 1 C - SWL 1 1 C - IGWIS 1 1 C - INPUT_SRC 5 5 C - UNUSED 1 1 C ENTRY_DATE 8 10 D - UPDT_DATE 8 10 D - DATA FIELD DESCRIPTIONS: RELATEID - Key relate field for all well data: * IF Minnesota Unique Well Number, then 00 Minnesota Unique Well Number (8C) * IF W-Series Number, then CC(County Code)+ W + 0 + original W-Series Number COUNTY_C - Standard 2-digit Minnesota County code. Code file is COUNTY UNIQUE_NO - Minnesota Unique Well Number or W-Series Number, which permits the correlation of information for a given well from a variety of sources. The Minnesota Unique Well Number is assigned by the Minnesota Department of Health on the water well Driller Log form. WELLNAME - Name of the well owner. Last name, first name for domestic well, Company name as commonly used for commercial wells. NOTE: this field reflects the name as it appears on the original Water Well Driller Log. The name is NOT updated when the property changes hands. TOWNSHIP - Public land survey township number RANGE - Public land survey range number RANGE_DIR - Direction of the public land survey range number. Range directions in Minnesota are all West', with the exception of the stern tip of Cook County. SECTION - Public land survey section number. Legitimate values are 1 through 36. SUBSECTION - Indicates from lrgest to smallest, the quarter, quarter-quarter, quarter-quarter-quarter, quarter-quarter-quarter-quarter tion, and so on. The labeling of the subsections is as follows: *A = northeast quarter *B = northwest quarter *C = southwest quarter *D = southeast quarter MGSQUAD_C - Minnesota Geological Survey code for the USGS 7.5-minute Quadrangle map on which the well is located. Code file is MGSQUAD ELEVATION - Elevation of the well in feet above mean sea level. ELEV_MC - Code indicating how the elevation was determined. Code file is ELEV_MC *A = altimeter(+/- 1 foot) *G = GPS (Global Positioning System/Satellite) *H = GPS > 12M (<+- 40') *I = GPS 3-12 M (+-10-40') *J = GPS 1-3M *K = GPS <=1M *S = Surveyed *T = 7.5-minute topographic map (+/- 5 feet) STATUS_C - Indicates the current activity status of the well. Code file is STATUS *A = active *I = inactive *S = sealed *T = temporarily sealed *U = unknown USE_C - Minnesota well use codes, as reported on the Water Well Driller Log. Code file is USE *AB = Abandoned *CO = Commercial *DO = Domestic *HP = Heat Pump *IJ = Injection *IN = Industrial *IR = Irrigation *LA = Lake Level Augmentation *MD = Multiple Dwelling *MU = Municipal *MW = Monitor Well *OB = Observation Well *OT = Other (specify in remarks) *PC = Community Supply (Municipal) *PN = Public Supply/Non-community-transient *PO = Pumpout Well *PP = Public Supply/ Non-community-non-transiet *PS = Public Supply/Non-community *PZ = Piezometer *RC = Recovery Well *RW = Relief Well *SI = Scientific Investigation *TW = Test Well *UN = Unknown *IN = Industrial LOC_MC - Location Method Code- specifies how the well was field-located; this determines the accuracy of the well's identity and location and how useful the data recorded for the well are for certain applications. Code file is LOC_MC LOC_SRC - Code indicating who did the location determination. Code file is LOC_SRC DATA_SRC - Code indicating source of the information. Code may consist of a driller's license number, an agency abbreviation, or a personalized abbreviation. Code file is DATA_SRC DEPTH_DRLL - Depth well was drilled in feet from the land surface. DEPTH_COMP - Depth completed. Finished depth of the hole in feet; usually the same as depth drilled' but can be less if the hole was backfilled before finishing. DATE_DRLL - Date that the well installation was completed. CASE_DIAM - Well casing diameter, in inches. CASE_DEPTH - Well casing depth, in feet. GROUT - Indicated whether or not the well is grouted (Y = Yes, N = No). POLLUT_DST - Distance in feet to nearest potential source of contamination; intended for rough estimates of close potential sources. POLLUT_DIR - Direction to the nearest potential source of contamination referenced in the pollution distance field. The direction codes are N,S,E,W,NE,NW,SE,SW POLLUT_TYP - Code indicating the type for the potential source of contamination Referred to above. Code file is POLL_TYP *ASH = Ash *BYD = Barnyard *FDL = Feedlot *IND = Industrial *JSY = Junk/Scrap yard *LDF = Landfill *LIV = Livestock Watering *O = Other *OPD = Open Dump *PES = Pesticides *SDF = Septic Tank/Drain field *STO = Storage areas *TAN = Tanks *VOC = Volatile organic compounds *WAS = Waste pile *BOW = Body of water *OWL = Old/other well STRAT_DATE - Date stratigraphy was interpreted. STRAT_UPD - Date stratigraphy was updated. STRAT_SRC - Agency which did the stratigraphic interpretation. Code file is STR_SRC STRAT_GEOL - Initials of the geologist who did the stratigraphic interpretation. Code file is STR_GEOL STRAT_MC - Geologic interpretation method code. Code file is STR_METH DEPTH2BDRK - Depth to bedrock, in feet below land surface. FIRST_BDRK - Code indicating the stratigraphic unit representing the first bedrock unit. Code file is STR_CODE LAST_STRAT - Code indicating the last stratigraphic unit. Code file is STR_CODE OHTOPUNIT - Code indicating the top stratigraphic unit to which the well is open. Code file is STR_CODE OHBOTUNIT - Code indicating the bottom stratigraphic unit to which the well is open. Code file is STR_CODE AQUIFER - Stratigaphic code used to identify the aquifer from which the well is drawing. 'MTPL' indicates multiple aquifer with the open interval top and bottom stratigraphic units given. Code file is STR_CODE CUTTINGS - Flag indicating whether there are cuttings for this well. CORE - Flag indicating whether a core sample was taken for this well. BHGEOPHYS - Flag indicating whether a geophysical log exists for this well. GEOCHEM - Flag indicating whether geochemical information exists for this well. WATERCHEM - Flag indicating whether water chemistry information exists in CWI for this well OBWELL - Flag indicating whether this well is part of the DNR's state ground water level observation network. SWL - Flag indicating whether there is at least one static water level reading for this well IGWIS - Flag indicating whether this well is part of the MPCA's IGWIS system. INPUT_SRC - Code indicating who input this information into CWI. Code file is INPT_SRC UNUSED - This field is currently empty ENTRY_DATE - Date of entry of well record into County Well Index. UPDT_DATE - Date of last update to well record in County Well Index. |
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| Section 6 | Distribution Information | Top of full metadata | Top of page | |
| Publisher | Minnesota Geological Survey and Land Management Information Center, Minnesota Planning | |||
| Publication Date | 06/01/1999 | |||
| Contact Person Information | Susanne Maeder GIS Data Coordinator Minnesota Land Management Information Center (LMIC) 300 Centennial Building; 658 Cedar Street St. Paul, Minnesota 55155 Phone: 651.201.2488 FAX: 651.296.3698 E-mail: clearing.house@state.mn.us |
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| Distributor's Data Set Identifier | wwptcalc | |||
| Distribution Liability | Limitations: Although extensive effort has been made to produce error free and complete data, all geographic information has limitations due to the scale, resolution, date and interpretation of the original source materials. You should consult available data documentation (metadata) for these particular data to determine their limitations and the precision to which they depict distance, direction, location or other geographic characteristics. These data may be subject to periodic change without prior notification. No Warranty: These data are provided as is, without any warranty whatsoever, including but not limited to any warranty as to their performance, merchantability, or fitness for any particular purpose. Liability: The entire risk as to the results of the use of these data is assumed by the user. LMIC is not responsible for any interpretation or conclusions based on these data made by those who acquire or use it. LMIC shall not be liable for any direct, indirect, special, incidental, compensatory or consequential damages or third party claims resulting from the use of these data, even if LMIC has been advised of the possibility of such potential loss or damage. In States that do not allow the exclusion or limitation of incidental or consequential damages, you may not use these data. Data Delivered on Electronic Media: If these data have been requested from LMIC on magnetic media, CD-ROM or any other physical media, LMIC will deliver this product in the computer-readable format agreed upon with the requestor. LMIC will re-issue these data if they are determined unreadable by correctly adjusted computer input devices, or when the medium is delivered in a damaged condition. Requests for re-issue of this digital data product must be made within 30 days of the date shipped from LMIC. |
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| Transfer Format Name | Arc Export Files or ArcView Shapefiles | |||
| Transfer Format Version Number | A/I 7.2.1: AV 3.1 | |||
| Transfer Size | CWI table (c4ix.e00)- 48 MB; well export file - 37 MB; well shapefile - 61 MB; zipfile (.exe) 25.3 MB | |||
| Ordering Instructions | State file in Arc Export format and ArcView Shapefile format currently available for free online download. This data set is distributed on the internet by clicking below after Online Linkage. Doing so will tell your browser tostart downloading a self-extracting 'ZIP' file which will contain the following: - Arc Export Files (.e00) and Shapefiles (.shp, etc.) - Associated data tables (.e00) and code files (.e00 and .dbf format) - Metadata (.htm) for the dataset. - NOTICE.RTF, and important notice about this data set than can be read by most word processing software, and an ascii text version of the same notice (NOTICE.TXT) After downloading the self-extracting .zip file (which will have an .exe extension), simply execute (run) the file. For example, your can double click it from Windows Explorer or File Manager. Doing this will automatically extract the files described above. Simply delete files not needed. Contact distributor for other formats, including county data sets. |
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| Online Linkage | Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above. | |||
| Section 7 | Metadata Reference Information | Top of full metadata | Top of page | |
| Metadata Date | 04/11/2007 | |||
| Contact Person Information | Susanne Maeder,
GIS Data Coordinator Minnesota Land Management Information Center (LMIC) 300 Centennial Building; 658 Cedar Street St. Paul, Minnesota 55155 Phone: 651.201.2488 FAX: 651.296.3698 E-mail: clearing.house@state.mn.us |
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| Metadata Standard Name | Minnesota Geographic Metadata Guidelines | |||
| Metadata Standard Version | 1.2 | |||
| Metadata Standard Online Linkage | http://www.lmic.state.mn.us/gc/stds/metadata.htm | |||
This page last updated: 04/11/2007