{"status":"OK","data":{"id":21800,"identifier":"TJWA4","persistentUrl":"https://hdl.handle.net/1902.6/TJWA4","protocol":"hdl","authority":"1902.6","separator":"/","publisher":"Harvard Dataverse","publicationDate":"2011-12-13","storageIdentifier":"file://1902.6/TJWA4","effectiveDatasetFileCountLimit":100000,"datasetFileUploadsAvailable":99999,"datasetType":"dataset","locks":[],"latestVersion":{"id":17800,"datasetId":21800,"datasetPersistentId":"hdl:1902.6/TJWA4","datasetType":"dataset","storageIdentifier":"file://1902.6/TJWA4","versionNumber":1,"internalVersionNumber":1,"versionMinorNumber":0,"versionState":"RELEASED","latestVersionPublishingState":"RELEASED","deaccessionLink":"","productionDate":"","lastUpdateTime":"2011-12-13T20:05:41Z","releaseTime":"2011-12-13T00:00:00Z","createTime":"2011-02-20T14:03:43Z","publicationDate":"2011-12-13","citationDate":"2011-12-13","effectiveDatasetFileCountLimit":100000,"datasetFileUploadsAvailable":99999,"termsOfUse":"This dataset is made available with limited information on how it can be used. You may wish to communicate with the Contact(s) specified before use.","specialPermissions":"MassGIS has restricted access to this data set. Available only to Harvard University affiliates. Affiliates are limited to current faculty, staff and students.","restrictions":"All maps or other documents produced using data or data products supplied through this agreement should contain a data source credit, prominently displayed, such as \"source data supplied by the Massachusetts Executive Office of Environmental Affairs, MassGIS.\" These digital data represent the efforts of the Massachusetts Executive Office of Environmental Affairs and its agencies to compile or record information from the cited source materials. EOEA maintains an ongoing program to record and correct errors in these data that are brought to its attention. EOEA makes no claims as to the absolute validity or reliability of these data or their fitness for any particular use. EOEA maintains records regarding all methods used to collect and process these digital data and will disclose this information upon request.","fileAccessRequest":false,"metadataBlocks":{"citation":{"displayName":"Citation Metadata","name":"citation","fields":[{"typeName":"title","multiple":false,"typeClass":"primitive","value":"MassGIS 2003 Massachusetts Interim Wellhead Protection Areas (March 2003)"},{"typeName":"author","multiple":true,"typeClass":"compound","value":[{"authorName":{"typeName":"authorName","multiple":false,"typeClass":"primitive","value":"MassGIS (Office : Mass.)"}},{"authorName":{"typeName":"authorName","multiple":false,"typeClass":"primitive","value":"Massachusetts. Dept. of Environmental Protection."}},{"authorName":{"typeName":"authorName","multiple":false,"typeClass":"primitive","value":"Drinking Water Program (Mass.)"}}]},{"typeName":"datasetContact","multiple":true,"typeClass":"compound","value":[{"datasetContactEmail":{"typeName":"datasetContactEmail","multiple":false,"typeClass":"primitive","value":"N/A"}}]},{"typeName":"dsDescription","multiple":true,"typeClass":"compound","value":[{"dsDescriptionValue":{"typeName":"dsDescriptionValue","multiple":false,"typeClass":"primitive","value":"This datalayer contains polygons representing Interim Wellhead Protection Areas (IWPA) for community and non-community water supply sources as defined by the Massachusetts Department of Environmental Protection. Wellhead protection areas are important for protecting the recharge area around public water supply (PWS) wells. A Zone II is a wellhead protection area that has been determined by hydrogeologic modeling and approved by the Department of Environmental Protection's (DEP) Drinking Water Program (DWP). In cases where hydro-geologic modeling studies have not been performed and there is no approved Zone II, an Interim Wellhead Protection Area (IWPA) is established based on DEP DWP well pumping rates or default values. Certain land uses may be either prohibited or restricted in both approved (Zone II) and interim (IWPA) wellhead protection areas. In the absence of an approved Zone II, DEP has adopted the Interim Wellhead Protection Area (IWPA) as the primary, protected recharge area for PWS groundwater sources. For PWS sources that pump less than 100,000 gallons per day (GPD), the IWPA radius is proportional to the pumping rate in gallons per minute (GPM). Pumping rate is determined by DEP DWP based on one of the following methods, DWP approved pumping rate, metered data or Title 5 flow rate. The formula used for calculating the PWS well point buffer radius in feet is: Radius = ( 32 x pumping rate in GPM ) + 400 The minimum IWPA radius is 400 feet, the maximum (default) radius reached at 100,000 GPD (70 GPM) is 2,640 feet (1/2 mile). In instances where DWP pumping rate information is unavailable DWP approved defa\nult radius values are assigned based on PWS well classification. The default radius for community class PWS groundwater sources (GW) is 2,640 feet (804.6 meters). The default radius for non-community sources is 750 feet (228.6 meters) for Non Transient (NTNC) wells and 500 feet (152.4 meters) for Transient (TNC) wells. The DEP GIS Program currently [2003] maintains two statewide IWPA coverages (IWPA and IWPACOM) shared through MassGIS. Both are generated by buffering groundwater sources in the DEP Public Water Supply datalayer (PWS_DEP). The IWPA coverage contains variable width IWPA buffers for BOTH approved community and non-community groundwater sources in the DEP PWS datalayer which do not have an approved Zone II. The IWPACOM coverage contains IWPAs ONLY for community PWS sources which do not have an approved Zone II."}}]},{"typeName":"topicClassification","multiple":true,"typeClass":"compound","value":[{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"Water-supply"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"LCSH"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"Wellheads"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"LCSH"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"Groundwater"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"LCSH"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"Water districts"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"LCSH"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"Natural resources conservation areas"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"LCSH"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"Wellhead protection"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"LCSH"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"environment"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"ISO 19115 Topic Category"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"inlandWaters"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"ISO 19115 Topic Category"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"utilitiesCommunication"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"ISO 19115 Topic Category"}}]},{"typeName":"producer","multiple":true,"typeClass":"compound","value":[{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"Massachusetts Dept. of Environmental Protection"}},{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"MassGIS (Office : Mass.)"}},{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"Massachusetts. Dept. of Environmental Protection."}},{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"Drinking Water Program (Mass.)"}}]},{"typeName":"productionDate","multiple":false,"typeClass":"primitive","value":"N/A"},{"typeName":"productionPlace","multiple":true,"typeClass":"primitive","value":["Boston, Mass."]},{"typeName":"distributor","multiple":true,"typeClass":"compound","value":[{"distributorName":{"typeName":"distributorName","multiple":false,"typeClass":"primitive","value":"Harvard Geospatial Library"}}]},{"typeName":"timePeriodCovered","multiple":true,"typeClass":"compound","value":[{"timePeriodCoveredStart":{"typeName":"timePeriodCoveredStart","multiple":false,"typeClass":"primitive","value":"N/A"}}]},{"typeName":"kindOfData","multiple":true,"typeClass":"primitive","value":["vector digital data"]}]},"geospatial":{"displayName":"Geospatial Metadata","name":"geospatial","fields":[{"typeName":"geographicCoverage","multiple":true,"typeClass":"compound","value":[{"otherGeographicCoverage":{"typeName":"otherGeographicCoverage","multiple":false,"typeClass":"primitive","value":"Massachusetts"}}]},{"typeName":"geographicBoundingBox","multiple":true,"typeClass":"compound","value":[{"westLongitude":{"typeName":"westLongitude","multiple":false,"typeClass":"primitive","value":"-73.497776"},"eastLongitude":{"typeName":"eastLongitude","multiple":false,"typeClass":"primitive","value":"-69.921903"},"northLatitude":{"typeName":"northLatitude","multiple":false,"typeClass":"primitive","value":"42.819365"},"southLatitude":{"typeName":"southLatitude","multiple":false,"typeClass":"primitive","value":"41.234801"}}]}]},"socialscience":{"displayName":"Social Science and Humanities Metadata","name":"socialscience","fields":[{"typeName":"samplingProcedure","multiple":false,"typeClass":"primitive","value":"This layer was originally downloaded in shapefile format from the MassGIS 2003 Vector Data CD set. The shapefile was then imported to an ArcSDE 9.1 database using the ArcSDE command line importing tool, shp2sde."}]}},"files":[{"description":"","label":"SHAPE","restricted":false,"version":1,"datasetVersionId":17800,"dataFile":{"id":2336826,"persistentId":"","filename":"SHAPE","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":0,"description":"","storageIdentifier":"http://hgl.harvard.edu:8080/HGL/jsp/HGL.jsp?action=VColl&VCollName=MGISIWPAP","rootDataFileId":-1,"md5":"","checksum":{"type":"MD5","value":""},"tabularData":false,"creationDate":"2015-04-08","publicationDate":"2011-12-12","lastUpdateTime":"2011-12-13T20:05:41Z","fileAccessRequest":false}}]}}}