Canaan Valley National Wildlife Refuge in West Virginia

This data set contains boundary layers for the Canaan Valley
National Wildlife Refuge in West Virginia.

National Wildlife Refuges are federal lands managed by the U.S. Fish
and Wildlife Service (USFWS). The primary source for boundary
information is the USFWS Realty program (status maps, legal
surveys). An effort by the USFWS Region 5 (northeast states - ME,
NH,VT, MA, RI, CT, NY, PA, NJ, MD, DE, WV, VA) Realty Division,
Cartography and Spatial Data Services Branch has resulted in digital
refuge boundaries for all refuges in the northeast at a scale of
1:24,000.

The purpose of this data is to serve as a spatial reference of refuge
boundaries for other data layers in GIS and mapping applications. It
is specifically not intended to be used as a land survey or
representation of land for conveyance or tax purposes.

Status maps were registered to geographic coordinates, boundaries were
digitized and labeled. Digital files were updated using survey and
collateral data, then stepped through 3 levels of quality-control
review for spatial and thematic accuracy.

Refuge boundaries define areas that are approved by the U.S. Congress
for acquisition into the National Wildlife Refuge System, or are
currently owned by USFWS. Arcs are coded with an item "boundary"with
the type of boundary line; polygons are coded with an item "status"
that describes their ownership status.

[Summary provided by U.S. Fish & Wildlife Service]

本数据集包含西弗吉尼亚州卡南谷国家野生动物保护区（Canaan Valley National Wildlife Refuge）的边界图层。

国家野生动物保护区为美国鱼类及野生动物管理局（U.S. Fish and Wildlife Service，USFWS）管理的联邦土地。边界信息的主要来源为USFWS不动产管理项目的现状地图与法定测量成果。美国鱼类及野生动物管理局第五大区（覆盖美国东北部各州：缅因州、新罕布什尔州、佛蒙特州、马萨诸塞州、罗德岛州、康涅狄格州、纽约州、宾夕法尼亚州、新泽西州、马里兰州、特拉华州、西弗吉尼亚州、弗吉尼亚州）不动产部、制图与空间数据服务分部牵头开展的工作，产出了东北部所有保护区的1:24000比例尺数字化保护区边界图层。

本数据集的用途是作为地理信息系统（Geographic Information System，GIS）及制图应用中其他数据图层的保护区边界空间参考基准。特别说明：本数据集不得用于土地测量，亦不得作为土地转让或税务计税所用的土地权属表征依据。

现状地图已匹配地理坐标系，边界已完成数字化与标注。数字化文件通过测量及佐证数据完成更新，并先后开展了三级空间与属性精度质量控制审查。

保护区边界划定的范围为经美国国会批准纳入国家野生动物保护区系统的区域，或当前由USFWS所有的土地。弧段以字段"boundary"标注边界线类型；多边形以字段"status"标注其权属状态。

[由美国鱼类及野生动物管理局提供的摘要]