Theme keywords: BLM, Bureau of Land Management, Extensive Recreational Management Area, ERMA, planningCadastre, 015, society, 016, Land Use Planning, Recreation BLM, Bureau of Land Management, Extensive Recreational Management Area, ERMA, planningCadastre, 015, society, 016, Land Use Planning, Recreation GIS dataset of the Extensive Recreational Management Areas (ERMAs) approved for the Lake Havasu Field Office RMP 2007. These settings apply to BLM lands in Arizona and California within the Lake Havasu Field Office. ) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory, these are shown with GIS dataset of the Extensive Recreational Management Areas (ERMAs) approved for the Lake Havasu Field Office RMP 2007. These settings apply to BLM lands in Arizona and California within the Lake Havasu Field Office. For regional analysis and display at 1:24,000. This dataset was prepared to support decisions in the Lake Havasu Field Office Resource Management Plan. Dataset locally known as LHFO_ERMA,shp. This dataset and other datasets in the Lake Havasu Field Office Geographic Information Database represent data for the BLM Lake Havasu Field Office. This data should be used in conjunction with the Lake Havasu Field Office RMP of 2007. This data should not be used at a scale larger than 1:24,000. The data and corresponding attributes are only as accurate as the source maps from which they were obtained, and may vary depending on the data and method of acquisition. This data is suitable for regional planning, management decision support at intermediate scales (i.e. 1:24,000 or smaller), and cartographic purposes. The data is not suitable for analysis at scales larger than 1:24,000. If the Receiving Agency (RA) has modified the data in any way, they are obligated to describe the types of modifications they have performed on hardcopy maps utilizing the data. RA specifically agrees not to misrepresent LHFO datasets or to imply that any changes made were approved by BLM LHFO. No warranty is made by the BLM for use of the data for purposes not intended by BLM. This information may be updated without notification. Feature attributes were taken from source material. Code assignments are believed to be representative of the source document. Dataset is considered complete for the Extensive Recreational Management Areas in the LHFO RMP 2007. It should be used along with the Special Recreational Management Areas to cover the field office. Overall horizontal accuracy for this data is not greater than national mapping accuracy standards (NMAS) for USGS source maps. Snapping and coordinate shift tolerances were maintained at 0.01 meters or less through editing. Horizontal positional accuracy for the digital data set was tested by visual comparison of the source data with hard copy verification plots. SRMA_ALL2a.shp was erased from the Lake Havasu Field Office boundary. The city limits of Lake Havasu were also erased. Additional zones were screen digitized within the resulting shapefile based on RMP input. Gibraltar SRMA was modified based on the changes to the proposed Shea Road/Osborne Wash OHV Area based on input from the Draft RMP comment period. This also slightly modified the ERMA boundary. Attribute table cleaned up to eliminate unnecessary fields. Zones merged with ERMA due to policy that ERMA contains no zones. Metadata created. BLM-LHFO provides this data ‘as is’ without liability. No warranty is made by the Bureau of Land Management as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data. Project R:projectsRMPpublicdata1927to83LHFO_ERMA.shp R:projectsRMPpublicdata1927to83LHFO_ERMA_Project.shp PROJCS[‘NAD_1983_UTM_Zone_12N’,GEOGCS[‘GCS_North_American_1983’,DATUM[‘D_North_American_1983’,SPHEROID[‘GRS_1980’,6378137.0,298.257222101]],PRIMEM[‘Greenwich’,0.0],UNIT[‘Degree’,0.0174532925199433]],PROJECTION[‘Transverse_Mercator’],PARAMETER[‘False_Easting’,500000.0],PARAMETER[‘False_Northing’,0.0],PARAMETER[‘Central_Meridian’,-111.0],PARAMETER[‘Scale_Factor’,0.9996],PARAMETER[‘Latitude_Of_Origin’,0.0],UNIT[‘Meter’,1.0]] NAD_1927_To_NAD_1983_NADCON Source.